Characterization of a Continuous, Very Narrowband Seismic Signal Near 2.08 Hz
Abstract
We have detected a continuous seismic signal near 2.08 Hz using data from a portable seismic array, 1280 km long, deployed in Siberia and Mongolia. The signal can be observed on almost all the stations along the profile. The amplitude and the frequency of the signal show a clear daily cycle, and their temporal variations are similar at different stations, suggesting that the signals observed at different stations have a common source. We performed a nonlinear inversion of the amplitude of the signal and found that the geometrical-spreading factor is about 0.6, implying that the signal is most likely to be a form of surface waves. The source location found by the inversion is in the vicinity of the city of Irkutsk, which is about 50 km north of Lake Baikal.
Recommended Citation
K. H. Liu and S. S. Gao, "Characterization of a Continuous, Very Narrowband Seismic Signal Near 2.08 Hz," Bulletin of the Seismological Society of America, vol. 91, no. 6, pp. 1910 - 1916, Seismological Society of America (SSA), Dec 2001.
The definitive version is available at https://doi.org/10.1785/0120010145
Department(s)
Geosciences and Geological and Petroleum Engineering
International Standard Serial Number (ISSN)
0037-1106
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2001 Seismological Society of America (SSA), All rights reserved.
Publication Date
01 Dec 2001
