IAGA in Sappro - Programme

IAGA Programme for Sapporo

The listing below is a copy of that distributed in the Second Circular and published on the Sapporo Assembly web site. It begins with the Joint Inter-Association symposia led by IAGA, labelled JSAnn. Following this are the Joint Inter-Association symposia co-sponsored by IAGA but led by other Associations. Full details of these symposia can be found by following the links to the lead Association Programmes. You can jump to the IAGA-only symposia, covenened by the Divisions and Interdivisional Commissions, by using the following links:Division I, Division II, Division III, Division IV, Division V, and Developing Countries.

JSA01 Long-term Trends in the Mesosphere, Thermosphere and Ionosphere (IAGA, IAMAS)

Increasing atmospheric concentration of greenhouse gases, increasing geomagnetic activity throughout the 20th century, long-term changes of solar activity and stratospheric ozone depletion. All these factors (primarily the first two) can affect long-term changes and trends in the mesosphere-thermosphere-ionosphere (MTI) system. We want to clarify the long-term effect of man-made origin on the MTI system. Papers dealing with observational as well as model and theoretical results are welcome, particularly those which help to clarify controversies between some experimental results and those, which help to determine the relative role of the above factors in the observed long-term trends.

Related Sessions: JSA02, GAII.02

Convener: Jan Lastovicka, Inst. of Atmospheric Physics, Bocni II, 141 31 Prague, Czech Republic, tel: +420-2-67103055, fax: +420-2-72763745, jla@ufa.cas.cz Co-convener: Gary E. Thomas (Lab. for Atmospheric and Space Physics, Univ. of Colorado, USA)

JSA02 External Forcing on the Middle Atmosphere and Ionosphere (IAGA, IAMAS)

The reason for the extreme variability of the middle atmosphere and thermosphere/ ionosphere system is their rapid response to variable external forcing. This forcing occurs not only from the solar, solar wind and magnetosphere variability but from the lower atmosphere as well. This Symposium is addressed to the recent results obtained on the response of the middle atmosphere and thermosphere/ionosphere from above and from below. The experimental and modeling investigations are encouraged. Special attention could be paid to the relative contribution of the solar radiation, high energy particle fluxes, geomagnetic disturbances etc, on the dynamics and structure of the middle atmosphere, to the propagation and interaction of internal atmosphere waves, to the longitudinal variability of the global atmospheric dynamics, to the long-period and short-term variability. The Symposium will provide the next opportunity to bring together the international research community to summarize and discuss the results gained on external forcing on the middle atmosphere and on the meteorological effects on the ionosphere.

Related Sessions: JSA03, GAII.01, GAII.02

Conveners: Dora Pancheva, Dept. of Physics, Univ. of Wales, Aberystwyth, SY23 3BZ, UK, tel: +44-1970-621902, fax: +44-1970-622826, ddp@aber.ac.uk. New address after June 2002: Dept. of Electronic & Electrical Engineering, Univ. of Bath, Bath, BA2 7AY, UK Edward Kazimirovsky, Inst. of Solar-Terrestrial Physics, Russian Academy of Sciences, Post Box 4026, 664033 Irkutsk, Russia, fax: +7-3952-462557, edkaz@iszf.irk.ru Co-Convener: L. Hood (Lunar and Planetary Lab., Univ. of Arizona Tucson, USA)

JSA03 Equatorial Middle Atmosphere-Thermosphere-Ionosphere Dynamics and Energetics (IAGA, IAMAS, SCOSTEP)

The symposium will address recent results on the dynamics and energetics governing the coupling processes of the equatorial middle atmosphere, thermosphere and ionosphere. The phenomenology of the equatorial ionosphere-thermosphere system is controlled by the vertical coupling to lower atmospheric layers. Middle atmospheric dynamics, and particularly equatorial and gravity waves, play a leading role in determining the variability of the ionosphere-thermosphere system. Transport of wave energy from lower heights and extra-tropics, as well as energy transfer involving magnetospheric and high latitude processes under disturbed conditions contribute to such variabilities. Focus is given to topics that include lower atmospheric processes like tropospheric convection, middle atmospheric dynamics and gravity waves, thermospheric winds, electric fields and integrated conductivities and their impacts on short and medium term variability in equatorial spread F and associated phenomena.

Related Sessions: JSA01, JSA02, GAII.02

Conveners: M. A. Abdu, Inst. Nacional de Pesquisas Esaciais-INPE, Ave. dos Astronautas 1758, 12201 970 Sao Jose dos Campos, SP, Brazil, tel: +55-12-345 6797, fax: +55-12-345 6990, abdu@dae.inpe.br Kevin Hamilton, International Pacific Research Center, Univ. of Hawaii, Honolulu, Hawaii, USA, tel: +1-808-956-8327, fax: +1-808-956-9425, kph@soest.hawaii.edu Co-conveners: K. Shiokawa (Solar-Terrestrial Environment Lab., Nagoya Univ., Japan), R. Sridharan (Space Physics Lab., Vikram Sarabhai Space Center, India)

JSA06 Seismo-, Volcano- and Tectono-Electromagnetic Effects (IAGA, IASPEI, IAVCEI)

The realization that electromagnetic phenomena are generated by earthquakes, volcanic eruptions, other volcano processes, and aseismic fault failure has been the subject of intense interest during the past few years. These phenomena may arise directly and/or indirectly from source processes driving these tectonic events and may reflect the roles of fluids in active faulting and volcanism. Unfortunately, not all aspects of these measurements, or theories proposed to explain them, are well understood. This symposium will focus on four main areas of investigation:

Measurements of electric and magnetic fields near active faults and on volcanoes,
Controlled laboratory observations and observations from natural laboratories such as vents, dam loading/filling, and geothermal fields,
Theoretical considerations regarding source generation mechanisms.
Measurement resolution, data quality, identification separation and removal of spurious signal sources.

Each of these areas provides insight into, and quantification of, electromagnetic fields generated by earthquakes and volcanic eruptions.

Related Sessions: JSA07, JSA10

Convener: Malcolm Johnston, U.S. Geol. Survey, 345 Middlefield Rd., MS977, Menlo Park, CA 94025, USA, tel: +1-650-329-4812, fax: +1-650-329-5163, mal@usgs.gov Co-conveners: Yoichi Sasai (Earthquake Research Inst., Univ. of Tokyo, Japan), Jacques Zlotnicki (Observatoire de Physique du Globe de Clermont-Ferrand, France)

JSA07 Regional Crustal Models Based on Seismic, Electromagnetic, Potential Field, and Geothermal Studies (IAGA, IASPEI)

This session welcomes contributions that describe new regional crustal and lithospheric models based on geophysical data. High-resolution determinations of the physical properties of the crust and/or the mantle lithosphere, and insights into crustal evolution are encouraged. Papers are invited that present 2- and 3-D crustal and lithospheric models of shields, platforms, basins, orogens, rifts, continental margins, and other comparable structures. We also seek discussions of data requirements that lead to robust geophysical interpretations. The use of multiple geophysical data sets, and methods for the digital presentation, storage, and access of models are highly encouraged.

Related Sessions: JSA06

Convener: Juha V. Korhonen, Geological Survey of Finland, PO Box 96, FIN-02151 Espoo, Finland, tel: +358-205-50 2275, fax: +358-205-50 12, juha.korhonen@gsf.fi Co-conveners: Friedemann Freund (San Jose State Univ. & NASA Ames Research Center, USA), Walter D. Mooney (US Geological Survey, USA)

JSA08 Effects of Solar Variability on Climate Change (IAGA, IAMAS)

Various model and experimental studies indicate that climate change of the 20th century may partially be of solar origin. Therefore, it is vital to determine to what degree solar variations may contribute to climate changes in order to better establish the role of anthropogenic factors. The purpose of this symposium is to clarify the role of changing solar activity, i.e. solar irradiance variations, solar wind parameters and high energy particle fluxes, on the troposphere and stratosphere on short as well as long time scales. Observational as well as model and theoretical papers are anticipated.

Related Sessions: JSA09

Convener: Karin Labitzke, Inst. for Meteorology, Free Univ. of Berlin, C.-H. Becker Weg 6-10, 12165 Berlin, Germany, tel: +49-30-83871166, fax: +49-30-83871167, labitzke@strat01.met.fu-berlin.de Co-conveners: Lon L. Hood (Lunar and Planetary Lab., Univ. of Arizona, USA), Jan Lastovicka (Inst. of Atmospheric Physics, Prague, Czech Republic), Judit M. Pap (NASA Goddard Space Flight Center, USA)

JSA09 Challenges of Global Change in Forcing From Below and Above (IAGA, IAMAS)

In our Earth system, several rapid and unpredicted responses may result from very small changes in forcing conditions or from gradual but regular environmental changes. There may be many reasons like forcing from below in terms of growing level of Human induced greenhouse gases/pollutants led by carbon-dioxide. Eruptions of volcanoes that spew large amounts of sulfur directly into the atmosphere, solar forcing from top to the Earth interior, etc. Monitoring long-term trends mixed with short-term instabilities and periodicities in the Earth system have always been a challenge. This session will present the non-linear and predictable responses to global change. Natural and anthropogenic effects on the Space weather system and processes by which they interact. Virtual realities of the present and future under this concept. Permanent changes and trends in the lower and middle atmosphere, temperature within the earth system, signature of the Continental Ocean boundary under the influence of global change are a few important topics, which are proposed to be addressed.

Related Sessions: JSA08

Convener: Gufran Beig, Indian Inst. of Tropical Meteorology, Dr. Homi Bhaba Road, Pashan, Pune-411008, India, tel: +91-20-5893600, fax: +91-20-5893825, beig@tropmet.res.in Co-convener: Jan Lastovicka (Inst. of Atmospheric Physics, Prague, Czech Republic)

JSA10 Electromagnetic Imaging and Monitoring of Volcanoes and Active Faults (IAGA, IASPEI, IAVCEI)

The session will cover the following problems:

EM manifestations of different phenomena, associated with active volcanoes and faults;
Resolving power of the EM data with respect to the alterations in electrical structure of volcanoes and deep faults;
EM imaging of volcanoes and fracture zones;
EM monitoring of volcanoes and active faults on the earth's surface and from platforms or satellites;
Long-term probabilistic forecast of the geodynamic activity based on EM data, geological and other geophysical information and formalized past experience.

Related Sessions: JSA06

Convener: Vjacheslav V. Spichak, Geoelectromagnetic Research Inst. RAS, 142190, Troitsk, Moscow Region, Russia, tel/fax: +7-095-7777218, v.spichak@g23.relcom.ru Co-convener: Toru Mogi (Hokkaido Univ., Japan)

JSA11 Twenty Years of the Ocean Drilling Program (IAGA, IAMAS, IAPSO, IASPEI, IAVCEI)

The year 2003 will mark the formal end to twenty years of the Ocean Drilling Program (ODP), widely hailed as the most successful example of international cooperation in all of geosciences. The year will also mark the formal beginning of the Integrated Ocean Drilling Program (IODP), an even more ambitious international program that will utilize a range of drilling platforms for scientific ocean drilling throughout the worldХs ocean basins. This session will celebrate ODP results with a look forward to IODP plans, with papers spanning the full range of geoscience disciplines represented in the ODP and IODP science plans. Convener: Keir Becker, Rosenstiel School of Marine and Atmospheric Sciences, Univ. of Miami, 4600 Rickenbacker Causeway, Miami, FL 33149 USA, tel: +1-305-361-4661, fax: +1-305-361-4632, kbecker@rsmas.miami.edu Co-conveners: Asahiko Taira (Inst. for Frontier Research on Earth Evolution, JAMSTEC, Japan), Christopher G. A. Harrison (RSMAS, Univ. of Miami, USA)

JSM04 Terrestrial Ecosystems, Atmospheric Composition, Climate (IAMAS, IAGA)

See description under IAMAS

JSM05 Solar Effects in the Middle Atmosphere and Ionosphere (IAMAS, IAGA, SCOSTEP)

See description under IAMAS

JSM06 Layered Phenomena Near the Mesopause (IAMAS, IAGA)

See description under IAMAS

JSM07 Application of GPS Techniques in the Atmosphere (IAMAS, IAGA, IAG)

See description under IAMAS

JSM08 Energetics and Circulation of the MLT Region and its Coupling with Circulation and Chemistry of the Thermosphere and Stratosphere (IAMAS, IAGA)

See description under IAMAS

JSM13 Data Assimilation for Atmospheric and Oceanic Processes (IAMAS [ICDM, ICCP], IAHS, IAPSO, IAGA, IAG, SPARC)

See description under IAMAS

JSP10 Rotating and Stratified Fluids (IAPSO, IAGA, IAMAS, SEDI)

See description under IAPSO

JSP11 Geophysical Risk and Vulnerability: The Population-Hazard Interaction (IAPSO, IAGA, IAHS, IAMAS, IASPEI, IAVCEI)

See description under IAPSO

JSS01 Hagiwara Symposium on Monitoring and Modeling of Earthquake and Volcanic Processes for Prediction (IASPEI, IAVCEI, IAG, IAGA)

See description under IASPEI

JSS03 Long-term in-situ Ocean Observatories and Observations (IASPEI, IAG, IAGA, IAPSO, ION)

See description under IASPEI

JSS04 Thermally Controlled Processes within the Earth (IASPEI, IAVCEI, IAGA, IAPSO, IAMAS, IAHS)

See description under IASPEI

JSS05 Physics and Chemistry of Earth Materials (IASPEI, IAVCEI, IAGA)

See description under IASPEI

JSS06 Earth Structure and Geodynamics (IASPEI, IAVCEI, IAG, IAGA)

See description under IASPEI

JWS01 Is Short-term Earthquake Prediction Possible? (IASPEI, IAVCEI, IAG, IAGA)

See description under IASPEI

JWS04 Subsurface Thermal Signatures of Tectonics, Hydrogeology and Paleoclimate (IASPEI, IAVCEI, IAGA, IAPSO, IAMAS, IAHS)

See description under IASPEI

Division I Programme

GAI.01 Extraterrestrial Rock Magnetism and the Origin of Remanence in the Solar System

Recent spatial exploration, such as providing maps of crustal magnetic anomalies on Mars and Moon, or estimates of the remanent magnetic moment of some asteroids, are renewing the interest in the intrinsic magnetic properties of extraterrestrial rocks and in "exotic" processes of NRM acquisition like shock and irradiation effects. Is the Holy Grail of meteorite paleomagnetism (finding evidence for a large "primordial magnetic field") achievable - in other words, do we understand the paleomagnetic signal of meteorites? We invite contributions on meteorites, lunar rocks or analog materials, theoretical contribution on extraterrestrial NRM acquisition processes as well as on interpretation of spatial magnetic fields linked to remanent magnetization.

Related Sessions: GAI.02, GAI.04

Convener: P. Rochette, Cerege-Europole de l'Arbois bp80-13545 Aix en Provence, France, tel: +33-4-42 97 15 62, fax: +33-4-42 97 15 95, rochette@cerege.fr Co-convener: Minoru Funaki (National Inst. of Polar Research, Japan)

GAI.02 Natural Magnetic Minerals: Magnetic Properties, Chemistry and Evolution

Thorough and interdisciplinary investigation of natural magnetic minerals is gaining increasing attention. Not only "magnetically" traditional minerals, such as hematite, maghemite or hematite, are examined and re-examined using new techniques and approaches, but also such intriguing minerals as, e.g., ferrihydrite, lepidocrocite or jarosite are being studied, especially in terms of their environmental role and genesis. Moreover, within the frame of environmental magnetism, clay minerals as "magnetic precursors" are of great interest. Last, but not least, minerals of technogenic origin, for instance, epsilon-Fe2O3, which were previously believed to be of laboratory origin only, have been recently identified in atmospherically deposited fly-ash materials. Therefore, classical rock-magnetic techniques, along with other methods, such as electrochemistry, can throw new light on the properties and behavior of various minerals occurring in nature. This session invites contributions dealing with rock-magnetic approaches, either alone or in union with other methods, bringing new knowledge on various minerals, either in their natural form or as synthetic analogues.

Related Sessions: GAI.01

Convener: E. Petrovsky, Geophysical Inst. ASCR, Bocni II/1401, 141 31 Prague 4, Czech Republic, tel: +420-604-207962, fax: +420-2-67103332, edp@ig.cas.cz. Co-conveners: A. Hirt (ETH Zurich, Switzerland), A.B. Housen (Western Washington Univ., USA)

GAI.03 Rock Magnetism: Theory, Experiments and Models

Rock magnetism owes its constant innovation to its multifaceted and highly successful fields of application - most prominently in palaeo- and environmental magnetism. What problems still or newly exist and how can we advance understanding by combining theory, experiments and models? How, for example, can experimental procedures and interpretations in magneto-granulometry and -mineralogy be improved? What clues does low-temperature magnetometry offer to distinguish and quantify the diverse authigenic iron minerals so far broadly classified as 'paramagnetic'? What microscale processes actually control or bias sedimentary remanence acquisition? And what can models tell us about magnetization changes across phase transitions? These and many more rock magnetic tasks await your contribution!

Related Sessions: GAI.01, GAI.02

Convener: Tilo von Dobeneck, Geoscience Dept., Univ. of Bremen, P.O. Box 33 04 40, 28334 Bremen, Germany, tel: +49-421-218-3937, fax: +49-421-218-7008, dobeneck@uni-bremen.de Co-conveners: V. Scherbakov and K. Fukuma (Kumamoto Univ., Japan), K.P. Kodama (Lehigh Univ., USA)

GAI.04 Methods and Approaches in Paleomagnetism (Poster Session)

This session provides the opportunity to present posters that describe new methods and approaches in paleomagnetism and rock magnetism, including experimental methods, data analysis, and data presentation. New approaches to paleointensity determination and techniques that enable paleomagnetism to be applied to neotectonics, the environment and archaeology are especially welcomed.

Related Sessions: GAI.01, GAI.04

Convener: Harald Boehnel, UNICIT-UNAM, Queretaro, Mexico, hboehnel@unicit.unam.mx Co-conveners: Mimi Hill (Earth Science Dept., Univ. of Liverpool, UK), Phil Schmidt (Exploration and Mining, CSIRO, Australia)

GAI.05 Observational Constraints on Field Behavior: (Paleo) Secular Variation, Paleointensity, Reversal Frequency and Age Dating (SEDI)

Paleomagnetic records of past variations in the direction and intensity of the Earth's magnetic field provided enormous progress in our understanding of the evolution of the geodynamo and plate tectonics, and in the establishment of accurate geological time scales. This session will provide a forum for presentation and discussion of recent results focusing on new observations concerning magnetic field behavior in its broadest sense. We especially solicit contributions on magnetostratigraphy, reversal frequency, (plate)tectonics, paleointensity determinations, and (paleo)secular variation records.

Related Sessions: GAI.11, GAI.01, GAI.04

Convener: Wout Krijgsman, Paleomagnetic Lab. 'Fort Hoofddijk' Fac. of Earth Sciences, Utrecht Univ., Budapestlaan 17, 3584 CD Utrecht, Netherlands, tel: +31-30 2531672, fax: +31-30 2531677, krijgsma@geo.uu.nl Co-convener: Mark Dekker (Utrecht Univ., Netherlands)

GAI.06 Paleomagnetism and Fabrics: Regional and Global Geodynamical Challenges

Major challenges faced by paleomagnetism include: to define global plate reconstructions in the Paleozoic and the Proterozoic; to test the existence and configuration of hypothetical Proterozoic supercontinents (e.g. Rodnia); to confirm/rebut global events such as the Late Proterozoic "Snowball Earth"; to refine plate reconstructions in the Mesozoic and Cenozoic, especially from paleomagnetic poles of oceanic plates; to accurately quantify true polar wander. Regionally, kinematic and deformational processes along plate margins or in intracontinental areas can be illuminated by both paleomagnetism and magnetic fabrics. We invite contributions, with experimental and theoretical studies concerning applications/limitations of both paleomagnetic and magnetic fabric studies especially encouraged.

Related Sessions: GAI.04, GAI.01

Convener: Augusto Rapalini, INGEODAV, Dept. Cs. Geologicas, Fac. de Cs. Exactas y Naturales, Univ. de Buenos Aires, Pabellon 2, Ciudad Universitaria, C1428EHA, Buenos Aires, Argentina, tel: +54-11-4576-3329, fax: +54-11-4788-3439, rapalini@tango.gl.fcen.uba.ar Co-convener: Barbara Maher (Univ. of Lancaster, UK)

GAI.08 Conductivity of Crust and Mantle: Relation to Geodynamics (SEDI)

To better understand tectonic processes of geodynamically active region, imaging of the deep structure is essential. In particular, EM studies can image distribution of fluids, which play an important role in geodynamics. The aim of this session is to bring together the latest findings on EM studies at various active regions. Comparisons with other geophysical observations are encouraged. The session will focus on relationships with geological information and tectonic interpretation. Emphasis will be on the impact of the EM results on better understanding the geological process studies as well as leading to challenging new interpretation of these processes.

Related Sessions: GAI.09

Convener: A. Jones, Geological Survey of Canada, 615 Booth St., Room 218, Ottawa ON K1A OE9, Canada, ajones@NRCan.gc.ca

GAI.09 Electrical and Electromagnetic Studies in Geothermally Active Regions

To understand the processes related to geothermal, volcanic regions, imaging of the deep structure is essential. In particular, electrical and electromagnetic studies can image the anomalous electrical conductivity distribution related to the presence of fluids at shallow depths (1-5 km) and anomalous mantle structure or magma chamber at deeper level. The aim of the session is related to the recent investigations in geothermally active regions. Comparisons with other geophysical measurements, observations and also modeling studies are encouraged.

Related Sessions: JSA06, GAI.10

Convener: T. Harinarayana, National Geophysical Research Inst., Uppal Road, Hyderabad 500 007, India, tharinarayana@hotmail.com

GAI.10 Electromagnetic Inversion Modeling

EM inversion is now used regularly to solve problems relating to shallow depths of few meters to deeper regions of lithosphere. A wide range of inversion and modeling techniques considering 1-D, 2-D and 3-D earth situations are designed and applied for this purpose. The scope for the session would be as follows:

Exploration problems: minerals, water, hydrocarbons, pollution plumes, sea water incursion, archaeology, and urban investigations.
New analytical developments: modeling, processing and inversion; anisotropy, migration and imaging, integration with other data sets, global optimization.
Crustal and lithospheric studies: different geological and tectonic settings, inhomogeneity and anisotropy at deeper regions and their electrical, seismic and geochemical significance.
Global EM studies: Geomagnetic modeling to study global conductivity distributions, high P-T laboratory studies on electrical conductivity considering lattice preferred orientations and influence of heating and partial melting.

We invite also papers on solving joint geophysical inversion including EM data and based on different inversion schemes, including case histories and feasibility studies.

Related Sessions: JSA06

Convener: S.K. Verma, National Geophysical Research Inst., Hyderabad 500 007 (A.P.), India, skvngri@hotmail.com

GAI.11 Geodynamo, Theories and Experiments (SEDI)

Recent advances in computer technology have enabled geophysicists to refine models of the geodynamo and to extend their parameter range. Since it is still difficult to reach low magnetic Prandtl numbers in numerical simulations of convection driven dynamos, experimental realizations of homogeneous dynamos with liquid sodium in the laboratory are also of interest to geophysicists. A symposium is therefore proposed at which recent results related to the geodynamo and the dynamics of the Earth's core and its interaction with the mantle can be presented and discussed.

Related Sessions: GAI.05

Convener: F. H. Busse, Theoretical Physics IV, Univ. of Bayreuth, 95440 Bayreuth, Germany, tel: +49-921-55-3329, fax: +49-921-55-5820, Friedrich.Busse@uni-bayreuth.de Co-conveners: Akira Kageyama (National Inst. of Fusion Science, Japan), Arnaud Chulliat (Florida State Univ., USA)

Division II Programme

GAII.01 Ionosphere-Thermosphere-Magnetosphere Coupling

There is an increasing awareness of the important interconnections between Earth's magnetosphere, ionosphere and thermosphere. The magnetospheric interaction with the solar wind manifests itself through currents, which reconfigure the magnetosphere and eventually close through the ionosphere where considerable energy is deposited and dissipated. Ionospheric conductivity plays an important role in this process and this in turn is related to the interactions between the ionospheric ions and the neutral atmosphere. The result is a closely coupled complex system of primary and feedback fields and currents, all of which need to be studied and understood in order to properly describe the geospace environment. Modern space-based and ground-based sensors, techniques, and modeling are addressing M-I-T coupling issues and mechanisms and this session will emphasize these contributions to our current understanding. Papers treating specific topics related to this topic are solicited, along with those presenting a synthesis of aspects of the coupled systems.

Related Sessions: GAII.02

Convener: John Holt, MIT Haystack Observatory, Route 40, Westford, MA 01886, USA, jmh@haystack.mit.edu Co-convener: Mike Lockwood (Rutherford-Appleton Lab., UK)

GAII.02 Dynamics, Energetics and Structure of the Mesosphere-Thermosphere-Ionosphere Region

The mesosphere - thermosphere - ionosphere (MTI) region between about 50 km and 400 km hosts a complex interplay between radiative processes, chemistry, dynamics and electrodynamics, and includes the "transition region" around the mesopause where non-LTE, molecular diffusion, ion-neutral interactions, and other processes begin to dominate over those more typical of the middle atmosphere. This interdisciplinary session is a forum wherein ground- and space-based measurements, theory and modeling results covering all aspects of MTI science are solicited for presentation. Besides novel apsects and highlights of standard application, particularly results from new instruments (i.e., the TIMED satellite), new experimental techniques (i.e., airglow imaging), innovative analysis methods (i.e., tomography, Kalman filtering or radar imaging) or numerical model results revealing new physical insights are particularly encouraged.

Related Sessions: JSA02, GAII.01

Convener: Juergen Roettger, Max-Planck-Inst. fuer Aeronomie, Max-Planck-Str. 2, 37191 Katlenburg-Lindau, Germany, tel: +49-5556-979163, fax: +49-5556-979473, roettger@linmpi.mpg.de Co-conveners: Kazuo Shiokawa (Solar-Terrestrial Environment Lab., Japan), Jeff Forbes (Univ. of Colorado, USA), Michael J. Taylor (Utah State Univ., USA)

GAII.03 Measurement Techniques in the Middle/Upper Atmosphere and Ionosphere (IAGA, ICMA)

Observations of the dynamical, chemical and electromagnetic properties of the middle/upper atmosphere and ionosphere have been significantly improved in the last decades owing to development of new instruments and essential advance in retrieval and computer technique. The purpose of this symposium is to provide a forum for discussing recent accomplishments in remote-sensing measurements from ground and space. We welcome papers dealing with ground-based radio and optical techniques of the middle atmosphere, lower thermosphere and ionosphere, such as incoherent scatter, MST, MF and meteor radars, Rayleigh and resonance validation and comparison of new satellite instruments in flight and planned. In particular, we highlight recent development in GNSS (Global Navigation Satellite Systems) sounding of the ionosphere, e.g., ionospheric TEC mapping with a dense GPS receiver network, imaging/profiling of spatial/temporal structures of the E, F-region, and topside ionosphere by ground and space based GNSS receivers.

Related Sessions: GAII.05

Convener: Toshitaka Tsuda, Radio Atmospheric Science Center, Kyoto Univ., Uji, Kyoto 611-0011, Japan, tel: +81-774-33-2994, fax: +81-774-31-8463, tsuda@kurasc.kyoto-u.ac.jp Co-conveners: Norbert Jakowski (German Aerospace Center, Germany), John C. Foster (Haystack Observatory, USA)

GAII.04 Lightning-Induced Transient Processes in the Middle and Upper Atmosphere and their Impact on the Earth System

With the recent unexpected discovery of red sprites, blue jets, ELVES, and other optical lightning after-effects in the middle and upper atmosphere above very active thunderstorms, there has occurred an explosion of research activity to investigate their significance within the context of the larger terrestrial system. Investigators of upper atmospheric and ionospheric effects of lightning are invited to submit abstracts on all aspects of this new discipline, including global distribution and relationship to the global electrical circuit, the underlying meteorology, microphysics and transport dynamics, spectroscopy, electromagnetic signatures, electrochemistry and atmospheric chemistry effects, possible extraterrestrial analogs, and methods and problems of remote sensing. Of special interest are papers devoted to these new phenomena associated with Asian thunderstorm systems.

Related Session: JSA02

Convener: Hiroshi Fukunishi, Dept. of Geophysics, Graduate School of Science, Tohoku Univ., Aramaki-aoba, Sendai 980-8578, Japan, tel: +81-22-217-6734, fax: +81-22-217-5775, fuku@pat.geophys.tohoku.ac.jp Co-conveners: Martin Fuellekrug (Univ. Frankfurt/Main, Germany), Davis D. Sentman (Univ. of Alaska, USA)

GAII.05 Data Assimilation Techniques for the Ionosphere-Thermosphere-Magnetosphere System

Data assimilation techniques have been widely used by both meteorologists and oceanographers for several decades. In comparison, the space physics community has been slow to implement data assimilation techniques, primarily because of the lack of a sufficient number of measurements. However, this situation is changing rapidly, and within 10 years, it is anticipated that there will be several hundred thousand measurements per day in the ionosphere-thermosphere-magnetosphere system. The data, which will come from a variety of sources, will be available in real-time for ingestion into physics-based specification and forecast models. Papers dealing with data sources, data quality issues, and data assimilation models are welcome.

Related Sessions: GAII.01, GAII.03

Convener: Robert W. Schunk, Center for Atmospheric and Space Sciences, Utah State Univ., Logan, Utah 84322-4405, USA, tel: +1-435-797-2978, fax: +1-435-797-2992, schunk@cc.usu.edu Co-conveners: P.-L. Blelly (Centre d'Etudes Spatiales des Rayonnements, France), Sawako Maeda (Fac. for Study of Contempory Society, Kyoto Women's Univ., Japan)

GAII.06 Ionospheric Irregularities, Fields and Waves

Plasma waves and irregularities produced by instabilities, meteor impacts, and the interaction between the ionosphere and the neutral atmosphere disturb the equilibrium state of the ionosphere, affect transport, and cause a number of disparate phenomena detectable by spacecraft and with remote sensing. Because of ambiguities inherent in the observations, the mechanisms responsible for the irregularities and the manner in which they propagate, disperse, and dissipate are not always clear. This session is devoted to increasing our understanding of how plasma waves and irregularities are generated and behave in the low-, mid-, and high-latitude ionosphere. Experimental and theoretical presentations are solicited.

Convener: David Hysell, Dept. of Earth and Atmospheric Sciences, Cornell Univ., Ithaca, NY 14853 USA, tel: +1-607-255-5267, fax: +1-607-254-4780, daveh@geology.cornell.edu Co-conveners: Mamoru Yamamoto (Kyoto Univ., Japan), Takuji Nakamura (Kyoto Univ., Japan), James LaBelle (Dartmouth College, USA)

GAII.07 Aeronomy of Planetary Atmospheres Including Comparative Atmospheres

The meeting will include papers on the physics and chemistry of the lower, middle and upper atmospheres and ionospheres of the inner and outer planets and their satellites. Also studies of comparative atmospheres, including the Venus, Earth, and Mars atmospheres, will be presented. Recent results from the Mars Global Surveyor and Mars Odyssey 2001 missions will be emphasized. Included may be recent improvements to general circulation models of the thermosphere and lower atmospheres and descriptions of future planetary missions. The meeting will include both invited and contributed papers.

Related Sessions: GAIII.14, MC04

Convener: G.M. Keating, George Washington Univ. at NASA Langley, 31 Cherbourg Drive, Newport News, VA 23606, USA, tel: +1-757-930-0071, fax: +1-757-930-2112, g.m.keating@larc.nasa.gov Co-conveners: Ko-ichiro Oyama (Inst. of Space and Astronautical Science, Japan), F.W. Taylor (Univ. of Oxford, UK)

Division III Programme

GAIII.01 What are the Causes and Mechanisms for Particle Acceleration Associated with Aurora?

This session focuses on the physics of particle acceleration/energization by quasi-static electric fields and waves that lead to auroral displays and outflow of ionospheric plasma. Recent high-resolution satellite measurements by Freja, FAST, and Polar, at various altitudes with respect to the acceleration regions (below, within, and above) and coordinated ground-based observations have provided new insight into this complex and dynamic process. Multi-point measurements from Cluster spacecraft crossings of auroral field lines represent a new powerful tool that can be used to reveal the temporal behavior of the acceleration process and to provide clues on how the different elements of the auroral current circuit interact with each other. Theoretical and numerical modeling efforts that incorporate the empirical basis obtained from the above satellite missions are needed for understanding and clarifying the complex physics of auroral particle acceleration. Papers that take advantage of multi-point measurements, or compare theoretical predictions with data are particularly welcome.

Related Sessions: GAII.01, GAIII.08, GAIII.12

Convener: Goran Marklund, Alfven Laboratory, Royal Inst. of Technology, 10044 Stockholm, Sweden, tel: +46-8 7907695, fax: +46-8 245431, marklund@plasma.kth.se Co-conveners: Yan Song (Univ. of Minnesota, USA), Robert J. Strangeway (Univ. of California Los Angeles, USA) Dirk Lummerzheim (Univ. of Alaska, USA)

GAIII.02 What Role Do Waves Play in Transport and Acceleration of Ring Current and Radiation Belt Particles?

Waves which violate the first and third invariant conservation can, respectively, affect radial diffusion and pitch angle scattering of equatorially confined radiation belt electrons. The former, VLF waves, may also cause localized energization through radial transport and first invariant conservation. Ring current ions undergo drift-bounce resonance with ULF waves in the same mHz frequency range as electrons experience drift resonance, while both cyclotron and drift resonant effects influence trapping criteria of ions ranging from ring current to solar energetic particle and CRAND proton energies. This session will include wave effects in the preceding categories on particles of energies of order 10keV - 10MeV, which populate the inner magnetosphere with variable flux levels depending on the state of the solar wind coupling to the magnetosphere.

Related Sessions: GAIII.06, GAIII.10

Convener: Richard Horne, British Antarctic Survey, Madingley Road, Cambridge CB3 0ET, UK, tel: +44-1223-221400, fax: +44-1223-62616, rh@bas.ac.uk Co-convener: Mary Hudson (Dartmouth College, USA)

GAIII.03 How, When, Where, and Why do Magnetic Reconnection Occur?

Magnetic reconnection is a fundamental process at the Earth, Sun and other stars. Earth's space environment offers an excellent opportunity to understand reconnection in nature since in-situ and remote sensing observations can be made from microscopic to system-wide scales. We solicit observational and theoretical papers addressing how, when, where and why reconnection occurs in the earth's magnetosphere. Points of focus will be:

When and where does reconnection occur, and what determines its spatio-temporal structure?
How does reconnection occur - component or antiparallel merging?
What causes electron and ion diffusion in reconnection?
How do multi-scale reconnection processes interact?

Related Sessions: GAIII.04, GAIII.05, GAIII.08, GAIII.09

Convener: Mervyn P Freeman, British Antarctic Survey, High Cross, Madingley Road, Cambridge, CB3 0ET, UK, tel: +44-1223-221543, fax: +44-1223-221226, mpf@bas.ac.uk Co-conveners: James F. Drake (Univ. of Maryland, USA), Marit Oieroset (Univ. of California Berkeley, USA), Joachim Raeder (Univ. of California LosAngeles, USA) Per Even Sandholt (Univ. of Oslo, Norway)

GAIII.04 What are the Structures and Dynamics of the Magnetopause and its Boundary Layers?

This symposium will address the structure and dynamics of the low- and high-latitude magnetopause and boundary layer. Studies combining in situ and remote observations by ISTP, CLUSTER, IMAGE, and other satellites with the results of MHD, hybrid, and kinetic simulations are particularly welcome. Topics to be covered include identifying the signatures of various interaction modes and quantifying their relevance in terms of mass, momentum, and energy transfer, determining the shape of the magnetopause and its dynamic deformation, identifying the cause of transient phenomena near the magnetopause, describing the interaction of solar wind discontinuities with the magnetosphere, relating corresponding signatures at the magnetopause to those observed deeper within the magnetosphere and in the ionosphere, and quantifying the significance of ionospheric phenomena upon magnetopause processes.

Related Sessions: GAIII.03, GAIII.08, GAIII.09

Convener: Hideaki Kawano, Dept. of Earth and Planetary Sciences, Kyushu Univ., 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan, tel: +81-92-642-2671, fax: +81-92-642-2685, hkawano@geo.kyushu-u.ac.jp Co-conveners: Karl-Heinz Glassmeier (TU Braunschweig, Germany), David Sibeck (Johns Hopkins Univ., USA), Jay Johnson (Princeton Univ., USA)

GAIII.05 What are the Structures in the Magnetotail, Why are They There, and How do They Influence its Dynamics

The magnetotail is a dynamic region of near-Earth space moving and changing form in response to changes in the interplanetary medium. It also shows transient changes to its structure during substorms with the formation and motion of reconnection sites and with associated phenomena such as plasmoids and travelling compression regions. Much has been learned in recent years from the Geotail mission, particularly in concert with other satellite observations and ground-based data and the advent of four-craft Cluster observations from the near- and mid-tail are further clarifying the spatial and temporal variations in the regions.

Related Sessions: GAIII.03, GAIII.07, GAIII.08, GAIII.09

Convener: Toshifumi Mukai, Inst. of Space and Astronautical Science, 3-1-1 Yoshinodai Sagamihara, Sagamihara Kanagawa, 229-8510, Japan, tel: +81-42-759-8164, fax: +81-42-759-8456, mukai@stp.isas.ac.jp Co-conveners: Jean-Andre Sauvaud (Centre D'Etude Spatiale Des Rayonnements, France), Lou C Lee (National Cheng Kung Univ., Taiwan), Shin-Ichi Ohtani (Applied Physics Lab., Johns Hopkins Univ., USA)

GAIII.06 How is the Inner Magnetosphere Dynamically Coupled to other Regions of Geospace?

The main purpose of this session is to discuss about the dynamical behavior of the inner magnetosphere including the population regimes of thermal plasma and energetic particles, with a special attention to the coupling effects brought by the ionosphere and the plasma sheet. The enhanced magnetospheric convection as well as plasma dynamics must be configured as a globally self-consistent system, taking an account of ionosphere-magnetosphere feed back. Experimental papers from globally coordinated observations as well as theoretical papers from global simulations are solicited.

Related Sessions: GAIII.02, GAIII.08, GAIII.09

Convener: Takahiro Obara, Space Simulator Group, CRL, 4-2-1, Nuki-kita, Koganei, Tokyo 184-8795, Japan, tel: +81-42-327-6431, fax: +81-42-327-6661, T.Obara@crl.go.jp Co-conveners: Ioannis A. Daglis (National Observatory of Athens, Greece) John C. Foster (MIT Haystack Observatory, USA) Bill R. Sandel (Lunar and Planetary Lab., Univ. of Arizona, USA)

GAIII.07 What is the Role of Non-Linear Processes and Complex System Dynamics in Determining Magnetospheric Behavior?

The magnetosphere is a complex nonlinear dynamical system. We need to clarify the role of chaos, stochastic processes and self organized criticality in determining its behavior such as plasma sheet dynamics, substorm onset and the magnetosphere-ionosphere coupling via field-aligned currents. In correlation with such macroscopic disturbances of the magnetosphere, various kinds of microscopic processes take place producing localized electric field such as double layers and solitary waves observed in various regions of the magnetosphere. These microscopic nonlinear processes are the key to understanding of anomalous resistivities needed for reconnection, shocks and potential drops along the magnetic field lines.

Related Sessions: GAIII.01, GAIII.05, GAIII.09, GAIII.12, GAIV.02

Convener: Yoshiharu Omura, Radio Science Center for Space and Atmosphere, Kyoto Univ., Gokasho, Uji, Kyoto 611-0011, Japan, tel: +81-774-38-3811, fax: +81-773-31-8463, omura@kurasc.kyoto-u.ac.jp Co-conveners: Rudolf A. Treumann (Max-Planck-Inst. for Extraterrestrial Physics, Germany), Gurbax S. Lakhina (Indian Inst. of Geomagnetism, India)

GAIII.08 What is the Life-History of Particles in the Magnetospheric Regions?

This session is aimed at looking at the continuity equation of ions in a certain energy range and within the various magnetospheric regions. Thus it is concerned with the sources, sinks, transport and acceleration of magnetospheric ions. The relative contributions of solar wind and ionospheric sources varies considerably with both energy and location and both these sources respond on short, but differing, timescales to changes in solar forcing of the magnetosphere. Contributions using data from new imaging techniques and using charge-state and composition analysis of the ion gas are particularly welcomed.

Related Sessions: GAIII.01, GAIII.02, GAIII.03, GAII.01, GAIV.01

Convener: T. Moore, NASA Goddard Space Flight Center, Interplanetary Physics Branch, Code 692, Greenbelt, MD 20771-1000, USA, tel: +1-301-286-5236, fax: +1-707-988-7835, thomas.e.moore@gsfc.nasa.gov Co-conveners: Stephen Fuselier (Lockheed Martin Advanced Technical Center, USA), Chris Perry (Rutherford Appleton Laboratory, UK)

GAIII.09 How does Energy Flow from the Solar Corona Through the Magnetospheric Regions?

The Sun's variability impacts the magnetosphere in a variety of ways each of the sources of solar energy exhibits measurable variations, and many of these variations have an observable impact on near-Earth space. This session will focus on the flow of energy, ranging from irradiance in multiple wavelength regimes, to the flow of particles, magnetic field, and momentum via the solar wind and heliospheric transients. The various types of solar energy are deposited throughout the magnetosphere, and are responsible for both local and global processes. Typically, multiple data sets and sophisticated models are necessary to bridge the spatial, temporal and physical gaps between the solar, interplanetary and heliospheric systems. The symposium will address recent advances in our understanding of solar-driven magnetospheric processes.

Related Sessions: GAIII.01, GAIII.02, GAIII.03, GAIII.04, GAIII.05, GAIII.06, GAII.01, GAIV.01

Convener: B. Thompson, NASA Goddard Space Flight Center, Code 682, Greenbelt, MD 20771, USA, tel: +1-301-286-3405, fax +1-301-286-0264, barbara.thompson@gsfc.nasa.gov Co-conveners: J. Linker (Science Appl. Intl. Corp. San Diego, USA), A. Szabo (NASA Goddard Space Flight Center, USA), K. Shibata (Meteorological Research Inst. Ibaraki, Japan), M. Lockwood (Rutherford Appleton Lab. Chilton, UK)

GAIII.10 How can we Use Waves as Diagnostic Probes for Space Weather Studies?

This symposium will focus on the use of ULF, ELF and VLF waves as diagnostic probes of the solar wind-magnetosphere-ionosphere coupled system for a space weather studies. These waves convey information about the dynamics and morphology of the magnetosphere and its coupling to the solar wind and ionosphere. Papers obtained using new and established techniques from coordinated ground and space-based observations are strongly encouraged.

Related Sessions: GAIII.02, GAIII.12

Convener: Kiyohumi Yumoto, Space Environment Research Center, Kyushu Univ., 6-10-1 Hakozaki, Fukuoka 812-8581, Japan, tel: +81-92-642-2673, fax: +81-92-642-2673 or 2685, yumoto@geo.kyushu-u.ac.jp Co-conveners: Frederick Menk (Univ. of Newcastle, Australia) Andy Smith (British Antarctic Survey, UK)

GAIII.11 How do Spacecraft Interact with their Space Environment?

This symposium will focus on various interactions between spacecraft and the plasma environment such as spacecraft charging, solar array arcing and associated electromagnetic disturbance, interactions between electric thruster plume and spacecraft, and other plasma effects impacting space systems. Spacecraft interactions with the atmosphere including drag effects, charging effects, atmospheric measurements techniques and contamination of spacecraft surfaces will be also focused, which can be important issues for probing devices in the forthcoming planetary exploration missions. Plasma interactions with space applications such as electrodynamic tethers and microwave power transmission as well as active radio experiments will be also discussed. The effect on the magnetospheric plasma by plasma emission from a large structure such as Solar Power System which injects artificial heavy ion in the transport from LEO to GEO can be one of the topics.

Related Sessions: GAIII.02, GAIII.08, GAIII.09

Convener: Hideyuki Usui, Radio Science Center for Space and Atmosphere, Kyoto Univ., Uji, Kyoto 611-0011, Japan, tel/fax: +81-774-38-3817, usui@kurasc.kyoto-u.ac.jp Co-conveners: Alain Hilgers (ESTEC, Netherlands), Jean-Jacques Berthelier (Centre de Recherches en Physique de l'Environment Terrestre et Planetaire, France), H. Gordon James (Communications Research Centre, Canada), Paul Bernhardt (Naval Research Lab., USA)

GAIII.12 How does Multi-Point Monitoring Probe Multiple Spatial and Temporal Scales in the Magnetosphere?

The combination of simultaneous measurements from existing ISTP spacecraft, from the four-spacecraft Cluster mission, and from proposed joint spacecraft probes, such as the Chinese-ESA joint Double Star mission, has allowed unprecedented coverage of the magnetosphere on a wide range of spatial and temporal scales. In particular, the closely spaced Cluster spacecraft, flying in formation, have allowed meso-scale structures to be continuously probed in situ. Co-ordination with ground measurements can allow enhanced context for a number of transport mechanisms and simulated multi-point information also allows close synergy with numerical models. This session aims to demonstrate how successful the application of this information has been in the analysis of these scales. In particular, papers are solicited which exploit multipoint or coordinated observations, or combinations of such data with numerical simulations and/or theoretical models. Particular areas of interest are:

The 3-D structure of magnetospheric boundaries and other complex transition regions, the associated current layers and other transient structures.
The ability of multi-point measurements to separate and analyze spatial and temporal behavior.
The responses and relationships of processes occurring in adjacent regions, and over large spatial scales, including the transport of energy and momentum.

We also invite contributions which investigate the correlation of properties on a range of temporal scales and dealing with the co-ordination of multi-point measurements.

Related Sessions: GAIII.03, GAIII.04, GAIII.05, GAIII.06, GAIII.08, GAIII.07, GAIII.09

Convener: Malcolm W. Dunlop, Blackett Lab., Imperial College of Science, Technology and Medicine, London, SW7 2BW, UK, tel: +44-20-8594 7758, fax: +44-20-8594 7772, m.dunlop@ic.ac.uk Co-conveners: Goetz Paschmann (MPI Garching, Germany and ISSI Berne, Switzerland), Kirsti Kauristie (Finnish Meteorological Inst., Helsinki, Finland), Raymond Greenwald (APL, Johns Hopkins Univ., USA), Zuyin Pu (Dept. of Geophysics, Peking Univ., China)

GAIII.13 Reporter Reviews

Reviews of research in magnetospheric physics published in 2001-2003, will be presented by prominent members of the science community on the following topics: the Magnetopause and its Boundary Layers; Dynamics of the Geomagnetic Tail; Inner Magnetosphere; Large-Scale Fields and Flows; Wave-Particle Interactions; ULF Waves; Magnetospheres of Other Planets; and Microscale Plasma Physics and its context. These reviews will provide an overview of recent progress in each area and highlight the most significant results and most pressing issues in each area.

Related Sessions: GAIII.01-14, GAIV.04

Convener: B. Anderson, Johns Hopkins Univ., Applied Physics Lab., Johns Hopkins Road, Laurel, MD 20723-6099, USA, tel: +1-240-228-6347, fax: +1-240-228-6670, brian.anderson@jhuapl.edu Co-convener: S. Schwartz (Queen Mary and Westfield College, UK)

GAIII.14 How do the Magnetospheres of Other Planets and their Satellites Compare with the Earth's Magnetosphere?

This session will summarize recent progress in the space plasma physics of planetary exploration, including new results from Galileo at Jupiter, Mars Global Surveyor at Mars and Cassini at Jupiter. The session will also highlight anticipated progress from future space missions such as Planet B (Mars), Cassini (Saturn), Messenger and BepiColombo (Mercury) and Pluto/Kuiper Belt Mission (Pluto). The session will provide an overview of new discoveries from ground-based and Earth-orbiting telescopes and knowledge gained from theoretical and modeling studies. Talks relating to the topic of how the magnetospheres of other planets differ and resemble that of the Earth are especially welcome.

Related Sessions: GAII.07, GAIV.03

Convener: Krishan Khurana, Inst. of Geophysics and Planetary Physics, Univ. of California Los Angeles, Los Angeles, CA 90095, USA, tel: +1-310-825-8240, fax. +1-310-206-8042, kkhurana@igpp.ucla.edu Co-conveners: Barry Mauk (Applied Physics Lab., USA), Wing Ip (National Central Univ., Taiwan), Lars Blomberg (Royal Inst. of Technology, Sweden)

Division IV Programme

GAIV.01 The Dynamic Sun, its Atmosphere and Wind

Near simultaneous and continuous spacecraft observations of the Sun and Heliosphere, now encompass almost the whole past solar cycle, providing information on the solar interior, extended corona and interplanetary space. These observations are reshaping our understanding of the solar magnetic field and solar activity, and the mechanisms by which the corona is heated and the solar wind accelerated. The wealth of manifestations of the dynamic nature of the Sun, its atmosphere and wind are adding to the complexity of the problem. This symposium invites contributions covering observations, theory and modeling of the different aspects of the dynamic Sun, including its interior, dynamo, magnetic field, atmosphere and wind.

Related Sessions: GAV.05

Convener: Shadia Rifai Habbal, Univ. of Wales, Dept. of Physics, Aberystwyth, SY23 3BZ, UK, tel: +44-1970-622 218, fax: +44-1970-628513, sdh@aber.ac.uk Co-convener: Ruth Esser (Harvard-Smithsonian Center for Astrophysics, USA)

GAIV.02 Coupling Complexity in the Heliosphere

For theoreticians, modelers, and data analysts, the great challenges of Space Physics often result from the closely intertwined and integrated coupling of different spatial regions, disparate scales, and multiple plasma and atomic constituents in the solar, interplanetary, geospace and planetary environments. This session will address coupling complexity, or hierarchical coupling, in the solar wind, i.e., nonlinearity, and multi-scale, multi-process, and multi-regional feedback in the solar wind, by considering

Challenges in the formulation of sophisticated models that incorporate disparate scales, processes, and regions, and the development of analytic theory;
Challenges in computation;
Challenges in the incorporation of coupling complexity into computational models; and
Challenges in integrating theory, modeling, and space- and ground-based observations.

Examples abound, such as the interaction of the partially ionized local interstellar medium with the solar wind, the propagation of beams in interplanetary space, the evolution of coronal mass ejections and shock waves throughout the heliosphere, the generation and propagation of plasma waves and radiation, interplanetary turbulence and particle transport, etc.

Related Sessions: GAIII.07, GAIII.09, GAIII.12

Convener: Gary P. Zank, Inst. for Geophysics and Planetary Physics (IGPP), Univ. of California, Riverside, CA 92521, USA, tel: +1-909-787-3436, fax: +1-909-787-4324, zank@ucrac1.ucr.edu Co-convener: Iver H. Cairns (Univ. of Sydney, Australia)

GAIV.03 Mars: Magnetism and Interaction with the Solar Wind

Results from Mars Global Surveyor have greatly changed our view of the Martian environment. With no measurable dynamo magnetic field, the solar wind interaction is mainly of the atmospheric type like Venus. However significant crustal fields strongly modify the ionospheric structure locally ('mini-magnetospheres'). An extended exosphere makes Mars also share common physical processes with comets. Numerous open issues include upstream waves, plasma boundaries and their dynamics, atmospheric and ionospheric escapes, etc. The aim of this session is to present recent progress in data analysis and theoretical studies including comparison with Venus and comets. Papers related to forthcoming space missions (Nozomi and Mars-Express) and future projects (Dynamo, Venus-Express) are also welcome.

Related Sessions: GAII.07, GAIII.14

Convener: Christian Mazelle, Centre d'Etude Spatiale des Rayonnements, CNRS/Univ. of Toulouse, 9, Avenue du Colonel Roche, BP 4346, 31029 Toulouse Cedex 4, France, tel: +33-5-6155-7775, fax: +33-5-6155-6701, christian.mazelle@cesr.fr Co-conveners: Kiyoshi Maezawa (Inst. of Space and Astronautical Science, Japan), Dave L. Mitchell (Space Sciences Lab., Univ. of California, Berkeley, USA)

GAIV.04 Reporter Reviews

This session provides a review of recent advances, both theoretical and observational, on the Sun, the solar wind, and the heliosphere. These substantial reviews by active researchers will encapsulate a comprehensive range of topics in a manner that is accessible to researchers from other IAGA and IUGG Divisions, while offering synthesis and context to all Division IV scientists. All talks in this session are by invitation only.

Related Sessions: GAIII.13

Convener: Steven J. Schwartz, Astronomy Unit, Queen Mary, Univ. of London, Mile End Road, London E1 4NS, UK, tel: +44-20-7882 5449, fax: +44-20-8983 3522, S.J.Schwartz@qmul.ac.uk.

Division V Programme

GAV.01 Global Geomagnetic Observatory: Towards a Better Network of Geomagnetic Observations

This symposium will focus on measurements of the geomagnetic field at the Earth's surface. All aspects of the operation of geomagnetic observatories, repeat station surveys and possible ocean-bottom stations will be welcome for discussion. These include instrumentation, absolute observations, data acquisition, and data processing. An improved global coverage of quality ground-based geomagnetic observations remains a major goal and so contributions to this as well as any of the above topics are invited.

Related Sessions: GAV.03, JSS01, JSS03

Convener: Ellen Clarke, British Geological Survey, Murchison House, West Mains Road, Edinburgh EH9 3LA, UK, tel: + 44-131-650-0233, fax: +44-131-668-2683, E.Clarke@bgs.ac.uk Co-conveners: Valery Korepanov (Lviv Centre of the Inst. of Space Research, Ukraine), Dongmei Yang (Inst. of Geophysics, China Seismological Bureau, PeopleХs Republic of China)

GAV.02 Geomagnetic Indices: Real-Time Production and Forecasting

The ability to assess the current and the future state of geomagnetic activity is required in order to provide space weather services to users who systems may be adversely affected under certain conditions. Geomagnetic indices have been used for decades as a convenient technique to summarize and categorize the complex set of processes associated with geomagnetic activity. Therefore, this symposium is proposed to examine techniques, merits, and the limitations of using geomagnetic indices as a practical means of providing space weather services. In particular, papers addressing the real-time production and the prediction of geomagnetic indices are requested.

Related Sessions: GAV.03, U1

Convener: Christopher Balch, NOAA Space Environment Center, 325 Broadway, Boulder, CO 80303, USA, tel: +1-303-497-5693, fax: +1-303-497-7392, christopher.balch@noaa.gov Co-convener: Nandini Nagarajan (National Geophysical Research Inst., India)

GAV.03 The Geospace Environment in Near-Real Time: Science and Technology (Division V lead, joint with Division III, Interdivisional WG on Polar Research, and CEOS)

The scope of this symposium is to demonstrate emerging information technologies which offer unique opportunities to advance our scientific and operational capabilities in space sciences. These include ubiquitous electronic information distribution systems, allowing near-real time access to the data from remote locations, the data assimilation into advanced numerical models, and near-instantaneous sharing of the data, results, and collaborative ideas from remotely distributed science teams. The symposium calls for papers on the geospace environment studies from both the science and technology with their emphasis on near-real time usability.

Related Sessions: GAV.02

Convener: Tatsuki Ogino, Solar-Terrestrial Environment Lab., Nagoya Univ., Honohara 3-13, Toyokawa, Aichi 442-8507, Japan, tel: +81-533-89-5207, fax: +81-533-89-5090, ogino@stelab.nagoya-u.ac.jp Co-conveners: David Boteler (Geological Survey of Canada, Canada), Robert Clauer (Space Physics Research Lab., Univ. of Michigan, USA), Hannu Koskinen (Finnish Meteorological Inst., Finland), Herbert Kroehl (NOAA National Geophysical Data Center, USA)

GAV.04 International Decade of Geopotential Field Research: First Five Years - Advances in the Understanding the Geomagnetic Field (SEDI)

Following 20 years without satellite magnetic coverage, the first five years of the Decade of Geopotential Research have provided the geomagnetic community with a wealth of high quality data from several near-Earth satellites. Combined with ground-based data, this has opened numerous opportunities for studies ranging from core flow, mantle conductivity, and lithospheric composition to the dynamics of ionospheric and magnetospheric currents using single or multiple satellites. From all of these disciplines we solicit papers on advances in our understanding of the near-Earth geomagnetic field, its sources and their variability in time and space.

Related Sessions: GAV.05, GAV.06, GAV.07

Convener: Stefan Maus, GFZ Potsdam, Telegrafenberg, 14473 Potsdam, Germany, tel: +49-331-288-1233, fax: +49-331-288-1235, smaus@gfz-potsdam.de Co-convener: Dhananjay Ravat (Dept. of Geology, Univ. Southern Illinois, USA)

GAV.05 Modeling the Earth's Magnetic Field on Global and Regional Scales (SEDI)

The modeling of the Earth's magnetic field has advanced considerably in the last few years, driven by significant new data from the satellites Oersted, CHAMP, and SAC-C. This symposium seeks contributions both on modeling theory and practice, relating to these data and more traditional data sources (for example, magnetic observatories). Areas of interest include modeling of the main and lithospheric field and secular variation. Work related to the current call for candidate models for DGRF1995 and DGRF2000 is particularly welcomed.

Related Sessions: GAV.04

Convener: Richard Holme, Dept. of Earth Sciences, Univ. of Liverpool, 4 Brownlow Street, Liverpool L69 3GP, UK, tel: +44-151-794-5254, fax: +44-151-794-5196, holme@liv.ac.uk Co-convener: Benoit Langlais (Geodynamics Division, NASA Goddard Space Flight Center, USA)

GAV.06 Modern Magnetic Surveys for Regional Tectonics, Geohazards and Environmental Investigations

Airborne mapping of the EarthХs magnetic field has advanced significantly from its inception ~60 years ago. At continental scales, the compilation of individual surveys into coherent and seamless digital grids facilitates the recognition of important tectonic units. At more local scales, high-resolution airborne survey techniques reveal concealed fault systems in urban areas or subsurface structure of active volcanoes. This session is focused on case studies of modern airborne geophysical data collection and interpretation for better understanding of regional tectonics, natural hazards, and environmental settings. Papers concerning related work such as development of better acquisition and interpretational methods are also welcome.

Related Sessions: GAV.04, GAV.07

Convener: Shigeo Okuma, Geological Survey of Japan, AIST, Tsukuba Central 7, Higashi 1-1-1, Tsukuba, Ibaraki, 305-8567 Japan, tel: +81-298-61-3847, fax: +81-298-61-3609, s.okuma@aist.go.jp Co-conveners: Rick Saltus (US Geological Survey, USA), Massimo Chiappini (Istituto Nazionale di Geofisica e Vulcanologia, Italy)

GAV.07 Magnetic Anomalies and Rock Properties

This symposium will explore the interconnections between magnetic anomalies and rock properties. Measurement and/or categorization of rock-property field measurements can help determine and characterize sources of magnetic anomalies. Conversely, inversion, modeling, or terrain-correlation of magnetic anomalies can provide information about bulk rock properties that cannot be measured on the ground. Papers are invited that present studies or methods related to understanding magnetic anomalies from rock properties and/or understanding rock properties from magnetic anomalies.

Related Sessions: GAV.04, GAV.05, GAV.06

Convener: V. J. S. (Tien) Grauch, US Geological Survey, MS 964, Box 25046, Denver Federal Center, Denver, CO 80225, USA, tel: +1-303-236-1393, fax: +1-303-236-1425, tien@usgs.gov Co-convener: Meri-Liisa Airo (Geological Survey of Finland, Finland)

Interdivisional Commission on Developing Countries Programme

GADC.01 Low Latitude and Equatorial Electrojet Studies from Ground and Satellite Magnetic Data Paucity of concurrent satellite and ground magnetic data over the equatorial electrojet region has to a large extent been offset by the vector magnetic field measurements from polar orbiting Orsted and Champ satellites. These observations have opened new vistas of research to quantify latitudinal, longitudinal and temporal variability of the electrojet on the global scale. These data sets in combination with ground magnetic and ionospheric data can be used to address some of the unresolved issues of the electrojet and how they relate to the rest of the Sq current system. Papers providing significant new results on any of the aspects will be welcome. Papers highlighting the role of induction effect on the quantification of source currents in all frequency ranges would be of a special significance.

Related Sessions: JSA03

Convener: B. R. Arora, Indian Inst. of Geomagnetism, Colaba, Mumbai-400 005, India, tel: +91-22 2189053, fax: +91-22 2189568, bra@iig.iigm.res.in Co-conveners: Toshihiko Iyemori, Data Analysis Center for Geomagnetism and Space Magnetism, Kyoto Univ, Kyoto 606-8502, Japan, tel: +81-75-753-3949, fax: +81-75-722-7884, iyemori@kugi.kyoto-u.ac.jp V. Doumouya, Univ. de Cocody, Departement Physique, BP 582, Abidjan 22, Ivory Coast, vafid@yahoo.fr

GADC.02 Space Weather Effects at Equatorial and Low Latitude

The session will highlight the effect of space weather events on the equatorial and low latitude iono-thermosphere system that is dominated by geophysical phenomena like the Equatorial Ionization Anomaly (EIA), Equatorial Spread-F (ESF), Equatorial Electrojet (EEJ) and Equatorial Temperature Winter Anomaly (ETWA). Paper quantifying these effects and emphasizing their influence on communication and satellite-based navigation should form the central topic of discussion. Studies dealing with precipitation of charge particle in the region of south Atlantic Magnetic Anomaly and its possible risk on satellite/space craft will be special significance. Investigations giving insight on magnetosphere-high latitude-low latitude coupling under quiet and disturbed conditions as well as illustrating storm effects on low latitude neutral atmosphere are also welcome.

Related Sessions: JSA03

Convener: Harish Chandra, Physical Research Laboratory, Navrangpura, Ahemdabad, India, fax: +91 79 630 1502, hchandra@prl.ernet.in Co-conveners: Takashi Maruyama, Ionosphere and Radio Propagation Group, Communications Research Laboratory, 2-1 Nukuikita 4-chome, Koganei, Tokyo, 184-8795 Japan, tmaru@crl.go.jp Thomas Farges, Laboratoire de detection geophysique, CEA (Commissariat a l'Energie atomique), B.P. 12, F-91680 Centre de Bruyeres le Chatel, France.

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