SM41E-2526
Summary of types of precipitation events observed by BARREL during storms.

Thursday, 17 December 2015
Poster Hall (Moscone South)
Alexa Jean Halford1, Robyn M Millan1, Supriya Chakrabarti2, Leslie A Woodger1, Andrew John Kavanagh3 and The BARREL team, (1)Dartmouth College, Hanover, NH, United States, (2)University of Massachusetts, Lowell, Lowell, MA, United States, (3)NERC British Antarctic Survey, Cambridge, CB3, United Kingdom
Abstract:
In this poster we summarize the types of storm time precipitation observed by BARREL. One storm will be specifically highlighted which occurred on 26 January 2013 when a solar wind shock hit the Earth. After impact, electromagnetic ion cyclotron (EMIC) waves, observed both on the ground and with the Van Allen Probes, and relativistic electron precipitation (REP) were observed. A few hours later a substorm injection, observed by GOES and LANL, led to 100s keV electron precipitation. Throughout the substorm microbursts were clearly observed. Both during the REP as well as during the substorm precipitation, ULF time scale modulation of the X-rays was observed. This storm period also covered a time period where ~150 keV electron precipitation was observed to correlate well with drift echoes at 300 keV. This last event has not yet been fully explained.

We will also present new results from storm periods during the second and third (Swedish) BARREL campaigns. We hope to be able to include results from conjunctions with EISCAT Tromso radar and HiT&MIS, a day time auroral imager, along with the current heliospheric fleet of satellites.

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