Analysis on Source Mechanisms of Low-Latitude ELF-Whistlers

Details Analysis on Source Mechanisms of Low-Latitude ELF-Whistlers Analysis on Source Mechanisms of Low-Latitude ELF-Whistlers

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agufmsm11b0312w&link_type=abstract

American Geophysical Union, Fall Meeting 2006, abstract #SM11B-0312

Physics

2487 Wave Propagation (0689, 3285, 4275, 4455, 6934), 2499 General Or Miscellaneous, 2772 Plasma Waves And Instabilities (2471), 2794 Instruments And Techniques, 2799 General Or Miscellaneous

Scientific paper

Events of ELF-whistlers between 60Hz to 100Hz were observed at Lulin Observatory in Taiwan from 2003 to 2004 [\it Wang \it et \it al., 2005]. The correlation between occurrences, local time, and Ap index were analyzed. In this meeting we will present more statistical analysis on these events such as occurrences with Dst index, durations with local time and seasons,...etc. The durations of events are shown to vary with local time and seasons too. From above analysis, the ionospheric plasma environment probably plays a key role to determine whether these waves can propagate or not. Ion-cyclotron whistlers between O+ and He+ gyrofrequencies are deduced to be possibly the source waves. Reference Wang, Y-C, K. Wang, H.-T. Su; R.-R. Hsu, Low-latitude ELF-whistlers observed in Taiwan, Geophys. Res. Lett., Vol. 32, No. 8, L08102, 10.1029/2005GL022412

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