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VLF electromagnetic background in the seismoactive area of Northern Vietnam
Geomagnetism and Aeronomy Số 5, năm 2010 (Tập 50, trang 690-694)
ISSN: 167932
ISSN: 167932
DOI: 10.1134/S0016793210050178
Tài liệu thuộc danh mục: Scopus
Article
English
Tóm tắt tiếng anh
The preliminary results of observations of VLF electromagnetic signals (atmospherics) in the mountains of North Vietnam (Dien Bien Phu, 21°23′50″ N, 103°0′28″ E) are presented. Primarily, signals of typical atmospherics with a maximum in the frequency range of 4-9 kHz were observed; sometimes they were accompanied by so-called "tails" at frequencies less than 1 kHz, and also tweeks of usually short duration (about 10 ms) were observed. Several parameters of the ionosphere, as well as the distance to sources of atmospherics (in accordance to the data of the World Wide Lightning Location Network (TOGA)), were estimated by spectral-temporal characteristics of tweeks. © 2010 Pleiades Publishing, Ltd.