Resolution No. 3 (2019): Magnetotelluric survey data

The International Association of Geomagnetism and Aeronomy (IAGA)
Considering

• The importance of geoelectric field monitoring and forecasting for mitigation of geomagnetic hazards to ground-based technological conductors such as electrical power transmission networks
• The potential societal impact of severe geoelectric fields on ground-based infrastructure
• The challenges of long-term wide-spread direct monitoring of geoelectric fields

Noting

• The critical importance of magnetotelluric data in indirect estimation of geoelectric fields from well-established geomagnetic field measurements including from geomagnetic observatories and variometer networks, and the added value of magnetotelluric data in imaging and understanding geophysical imprints

Endorses

• National magnetotelluric survey initiatives, and

Urges

• Funding agencies to support continued acquisition of magnetotelluric survey data and efforts in historical magnetotelluric data recovery, and

Encourages

• Governments and the international magnetotelluric community to endorse open data sharing practices for magnetotelluric time series and data products, particularly magnetotelluric impedances and related transfer functions.