Session 2 - Geomagnetic Storms - Ground and near-Earth Space Weather Impacts

Craig Rodger (University of Otago), Mark Clilverd (British Antarctic Survey)
Monday 5/11, 13:30-15:00 & 15:45-17:15
MTC 00.15, Small lecture room

Large geomagnetic storms pose a significant Space Weather impact through ground and near-Earth impacts. Coupling via processes in the ionosphere, space weather drives changes throughout the ionosphere and also in structures on the Earth’s surface. One example is the hazard to electrical transmission networks as a consequence of geomagnetically induced currents (GIC). The GIC-hazard is one of the better recognised examples of Space Weather, appearing in many national risk registers. Instances of damage to power network transformers have been reported at high, mid and even comparatively low geomagnetic latitudes - recent studies have even suggested there may be a risk around the geomagnetic equator due to intensification from the equatorial electrojet. However, understanding the origin of the hazard, and providing alerts to power grid operators is challenging, due to the complexity of the physical linkages involved. Understanding the coupling between the solar wind and near-Earth/ground impacts may well require large scale dynamic models of the magnetosphere, for example using MHD approaches. The measurement, modelling, prediction and mitigation of the effects of Space Weather on the ground, such as unwanted geomagnetically induced currents in power systems, pipelines, and railway networks are required by the industries affected. In near-Earth space the same current systems lead to atmospheric expansion and increased drag on LEO spacecraft.

In this session we particularly encourage submissions from those involved in developing early warning of ground-level geomagnetic disturbances from solar wind measurements, members of industry, and from those involved in the modelling of the magnetosphere during geomagnetic storms with a regard to understanding the processes involved in the generation of ground-level and near-Earth disturbances.

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Talks : Time schedule

Monday November 5, 13:30 - 15:00, MTC 00.15, Small lecture room
13:30On the little-known consequences of the August 1972 ultra-fast coronal mass ejecta Knipp, D et al.Invited Oral
13:50Investigating the relationship between low frequency variations in the surface geomagnetic field and maximum rates of changeMeredith, N et al.Oral
14:05Forecasting & Analysis of dB/dt with the Space Weather Modeling FrameworkWelling, D et al.Invited Oral
14:25Active Experiments for Space Weather ApplicationsReeves, G et al.Oral
14:40Geomagnetic storm forecasting service StormFocus and performance evaluation over 5 years of real-time operationPodladchikova, T et al.Oral

Monday November 5, 15:45 - 17:15, MTC 00.15, Small lecture room
15:45The intense geomagnetic storms of solar cycle 24 and the associated surface electric field over Europe Dobrica, V et al.Oral
16:00Validating modelled transformer-level GIC flow in New Zealand’s South Island with extensive observationsDivett, T et al.Oral
16:15Regional 3-D modelling and verification of geomagnetically induced currents in SwedenRosenqvist, L et al.Oral
16:30Initial results of pipeline modelling in the United KingdomRichardson, G et al.Oral
16:45Geomagnetically Induced Currents and Harmonic Distortion: Observations from New Zealand Rodger, C et al.Oral
17:00Real-time forecast of GIC in power gridsTrichtchenko, L et al.Oral


1The solar cycle 24 geomagnetic storms triggered by ICMEs and CIRs Dumitrache, C et al.p-Poster
2Differential Magnetometer Measurements of Geomagnetically Induced Currents in the UK Power GridHuebert, J et al.p-Poster
3Periodicities and Singularities observed on IMF (Bz-component) and Auroral Electorjet (AE) Index during High Intensity Long Duration Continuous Auroral Activities Adhikari, B et al.p-Poster
4Stream interaction regions impact on weather variables in mid-latitudesKiznys, D et al.p-Poster
5Ground level enhancement event on September 10, 2017Balabin, Y et al.p-Poster
6Impact of large geomagnetic storms on space weather at the ground and earth environment during September 2017Mishev, A et al.p-Poster
7Geomagnetic cut- off rigidity calculations for long term magnetic conditions forecastingGerontidou, M et al.p-Poster
8The 06-09 September 2017 "Mega" event of solar cycle 24Bouya, Z et al.p-Poster
9Local time variations in mid-latitude magnetic field perturbations and geomagnetically induced currents during the 07-08 September 2017 geomagnetic stormClilverd, M et al.p-Poster
10The geoelectric and geomagnetic response over Fennoscandia to the 7-8 September 2017 stormDimmock, A et al.p-Poster
11Global simulations of the solar wind magnetosphere interactionEastwood, J et al.p-Poster
12Modelling and monitoring induced electric fields (IEFs) in Ireland and the UK for space weather applicationsCampanya, J et al.p-Poster
13Regional geomagnetic indexes for Mexico: Kmex & $\delta$HmexCorona-romero, P et al.p-Poster
14Local and global geomagnetic responses of extreme geomagnetic storms at mid latitude (pros and cons of being in the middle)Saiz, E et al.p-Poster
15Improving nowcast capability through automatic processing of combined ground-based measurementsYamauchi, M et al.p-Poster
16Electrical grids’ failures in southern Poland in 2010 and 2014 in association to space weather effectsGil, A et al.p-Poster