HR: 0800h
AN: SM41B-1180 [Abstracts]
TI: Low-Latitude ELF Emissions Below 100Hz Observed in Taiwan
AU: * Wang, K
EM: ktwang@must.edu.tw
AF: Division of Natural Sciences, Department of General Education, Ming Hsin University of Science and
Technology, 1 Hsin Hsing Rd. Sin Fong, HsinChu, 30401
Taiwan
AU: Wang, Y
EM: l2890102@phys.ncku.edu.tw
AF: Department of Physics, National Cheng Kung University, 1 Da-Hsueh Rd., Tainan, 70101
Taiwan
AU: Su, H
EM: htsu@phys.ncku.edu.tw
AF: Department of Physics, National Cheng Kung University, 1 Da-Hsueh Rd., Tainan, 70101
Taiwan
AU: Hsu, R
EM: rrhsu@phys.ncku.edu.tw
AF: Department of Physics, National Cheng Kung University, 1 Da-Hsueh Rd., Tainan, 70101
Taiwan
AB:
ELF antennas have been mounted at the Lulin Observatory (23.47oN, 120.87oE; 2862m) and National Cheng Kung
University (23.00oN, 120.22oE, 32m) in Taiwan for study of global lightning activities and ELF events. We have
previously reported 10-month ELF-Whistlers observations from Aug. 26, 2003 to July 13, 2004. [Wang et al.,
2005]. In addition to these events, other forms of ELF emissions were also detected. In this study, an Atlas of these
observed ELF emissions below 100Hz for the same period of observation is presented. Total numbers of more than 100 detected
events are categorized into six groups: discrete emissions, periodic emissions, quasi-periodic emissions, hiss, chorus, and
triggered emissions, according to the system of classification for VLF emissions in [Helliwell, 1965]. Nevertheless,
there are still some emissions hardly to be classified. Diurnal and seasonal variations of occurrences for these ELF emission
events are analyzed. Correlation between these events and storm indices will also be discussed.
References
Helliwell, R. A., VLF Emission, in Whistlers and Related Ionospheric Phenomena, Stanford University Press, Stanford,
California, 1965.
Wang . Y. C., K. Wang, H. T. Su, R. R. Hsu, Low-Latitude ELF-Whistlers observed in Taiwan, Geophys. Res. Lett., 32, L08102,
doi:10.1029/2005GL022412, 20
DE: 2471 Plasma waves and instabilities (2772)
DE: 2487 Wave propagation (0689, 3285, 4275, 4455, 6934)
DE: 2772 Plasma waves and instabilities (2471)
DE: 2794 Instruments and techniques
DE: 2799 General or miscellaneous
SC: SPA-Magnetospheric Physics [SM]
MN: Fall Meeting 2005