SM21A-2476
Poynting flux analysis of whistler-mode chorus using THEMIS data
Tuesday, 15 December 2015
Poster Hall (Moscone South)
Ulrich Taubenschuss1, Ondrej Santolik2,3, Eva Macusova3, Hugo Breuillard4 and Miroslav Hanzelka2, (1)Institute of Atmospheric Physics CAS, Space Physics, Prague, Czech Republic, (2)Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic, (3)Institute of Atmospheric Physics CAS, Prague, Czech Republic, (4)CNRS/Ecole Polytechnique/UPMC, Laboratoire de Physique des Plasmas, Paris, France
Abstract:
We present a statistical analysis of Poynting fluxes for magnetospheric whistler-mode chorus emission observed on THEMIS (Time History of Events and Macroscale Interactions during Substorms). Results are shown for chorus rising and falling tones. The aim of this study is to clearly distinguish between chorus from equatorial source regions and from sources at higher magnetic latitudes, i.e., from dayside pockets of minimum magnetic field. Furthermore, the topic of magnetospherically reflected chorus as a possible process to produce falling tones will be discussed.
