HG04: Drivers, detection, and ionospheric impacts of precipitation from the radiation belts (2)

Wednesday, August 20  16:00-17:40,  Room #11

Session Chairs: Craig Rodger, Mark Clilverd

Particle precipitation into the atmosphere is believed to be one of the dominant mechanisms for the loss of energetic electron from the Van Allen radiation belts, as well causing losses of ring current ions. Waveparticle interactions with ULF through to VLF waves are thought to be important drivers of these loss-events. This session is targeted at both ground-based and satellite experimental observations, as well as theoretical investigations, into the precipitation of energetic (>20 keV) and relativistic electrons or ring current ions. Papers considering wave-particle interactions driving losses, measurement of loss fluxes, or the effects of this precipitation on the ionosphere are welcome. We particularly welcome early results from the Van Allen Probes, the BARREL (Balloon Array for RBSP Relativistic Electron Losses) campaign, or studies from existing ground and space based experiments. Note that studies directed towards radiation belt electron acceleration or transport are likely better suited to the complementary sessions H01-H03.

16:00  HG04.1   ELECTROMAGNETIC ION CYCLOTRON WAVES AND THEIR EFFECT ON RADIATION BELT PARTICLES USING GROUND, SATELLITE, AND BALLOON DATA

C. E. Weaver

Dept. of Physics and Astronomy, University of Calgary, Calgary, Alberta, Canada


16:20  HG04.2   CALCULATION OF WHISTLER-MODE WAVE INTENSITY USING ENERGETIC ELECTRON PRECIPITATION

W. Li1, B. Ni1, R. M. Thorne1, J. Bortnik1, J. C. Green2, C. A. Kletzing3, W. S. Kurth3, G. B. Hospodarsky3

1Atmospheric and Oceanic Sciences, University of California, Los Angeles, Los Angeles, CA, United States
2National Geophysical Data Center, National Oceanic and Atmospheric Administration, Boulder, Co, United States
3Physics and Astronomy, University of Iowa, Iowa City, IA, United States


16:40  HG04.3   A SIMULATION STUDY OF THE PROPAGATION OF WHISTLER-MODE CHORUS IN THE EARTH'S INNER MAGNETOSPHERE

Y. Katoh

Department of Geophysics, Graduate School of Science, Tohoku University, Sendai, Japan


17:00  HG04.4   THE ROLE OF THE PLASMAPAUSE ON ENERGETIC ELECTRON PRECIPITATION FLUXES DURING SPACE WEATHER EVENTS

R. J. Duthie1, M. A. Clilverd1, C. J. Rodger2, J. Lichtenberger3, A. M. Jorgensen4

1Climate, British Antarctic Survey, Cambridge, United Kingdom
2Physics, University of Otago, Dunedin, New Zealand
3Space Research Group, Department of Geophysics and Space Sciences, Eötvös University, Budapest, Hungary
4Electrical Engineering Department, New Mexico Institute of Mining and Technology, New Mexico, USA


17:20  HG04.5   STUDY OF LONG PATH VLF SIGNAL PROPAGATION CHARACTERISTICS AS OBSERVED FROM INDIAN ANTARCTIC STATION, MAITRI

S. Sasmal1, S. Pal1, S. K. Chakrabarti2

1Ionospheric & Atmospheric Research, Indian Centre for Space Physics, Kolkata, West-Bengal, India
2Astrophysics & Cosmology, S. N. Bose National Centre for Basic Sciences, Kolkata, West-Bengal, India