CEDAR email: EGU Call for abstracts: ST3.5 Dynamics of ionospheric currents and their associated ground effects

[Kavanagh, Andrew J.]

Dear Colleagues

I would like to invite you to consider submitting an abstract to session ST3.5 Dynamics of ionospheric currents and their associated ground effects at the EGU General Assembly 2019, April 7-12, Vienna, Austria.

The abstract submission deadline is the 10 January 2019 (13:00 CET)
Direct submission: https://meetingorganizer.copernicus.org/EGU2019/session/31193
Details on submission: https://egu2019.eu/abstracts_and_programme/how_to_submit_an_abstract.html


ST3.5 Dynamics of ionospheric currents and their associated ground effects
Convener: Andrew Dimmock
Co-conveners: Andrew J. Kavanagh, Mirko Piersanti

Abstract:
The Earth’s ionosphere is characterized by large spatial scale electrical current systems which can exhibit extremely dynamical behaviour during periods of high solar activity. It is well established that the enhancement and variability of these current systems produce high amplitude and rapidly varying geomagnetic disturbances. As a result, currents are created in the conductive ground which set up a geoelectric field causing hazardous Geomagnetically Induced Currents (GIC) in ground conductive networks. At high-latitudes, where the more intense auroral electrojet currents flow, the ground response can be even greater, potentially increasing the susceptibility of high-latitude regions to space weather effects. Moreover, ionospheric currents can form complex spatio-temporal structures, such as vortices, that can result in localised ground responses, such as regional peak geoelectric fields. In this context, the regional 3D ground conductivity plays a key role, particularly in areas of high conductivity gradients, such as in close proximity to coastlines.

In this session we invite contributions which improve the understanding of the dynamics of ionospheric currents, the relevant magnetospheric coupling processes, and their subsequent ground effects, such as GIC.

This session provides a forum for the latest results based on spacecraft observations (e.g. MMS, Cluster, THEMIS, SWARM and CSES), ground-based measurements (such as all-sky cameras, radar and magnetometers), data derived products (e.g. ionospheric equivalent currents), and numerical simulations. Contributions focusing on more than one of these, and/or the coupling between multiple (magnetosphere-ionosphere-ground) regions are strongly encouraged.


Notes on Submission:

1)      Only EGU members can submit  an abstract as first author (members get a substantial reduction on the registration fee -  more than offsets the members fee). Apply here: https://www.egu.eu/membership/apply/

2)      First authors are allowed only 1 regular abstract + 1 solicited abstract  OR 2 solicited abstracts

3)      Each abstract incurs a charge of €40.

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Dr. Andrew J. Kavanagh |UK EISCAT Science Support |British Antarctic Survey
High Cross, Madingley Road, Cambridge CB3 0ET
Email: andkav at bas.ac.uk<mailto:andkav at bas.ac.uk> |Tel: +44 (0)1223 221314

NERC is part of UK Research and Innovation www.ukri.org<http://www.ukri.org>
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