Observation of Teleseismic  S  Wave Microseisms Generated by Typhoons in the Western Pacific Ocean | Zendy

Liu Qiaoxia | Zendy; Ni Sidao | Zendy; Qiu Yong | Zendy; Zeng Xiangfang | Zendy; Zhang Baolong | Zendy; Wang Fuyun | Zendy; Duan Yonghong | Zendy; Xu Zhiping | Zendy

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Observation of Teleseismic S Wave Microseisms Generated by Typhoons in the Western Pacific Ocean

Author(s) -

Liu Qiaoxia,

Ni Sidao,

Qiu Yong,

Zeng Xiangfang,

Zhang Baolong,

Wang Fuyun,

Duan Yonghong,

Xu Zhiping

Publication year - 2020

Publication title -

geophysical research letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.007

H-Index - 273

eISSN - 1944-8007

pISSN - 0094-8276

DOI - 10.1029/2020gl089031

Subject(s) - microseism , geology , seismology , typhoon , storm , seafloor spreading , wind wave , seismometer , surface wave , geophysics , significant wave height , oceanography , physics , astronomy

Microseisms generated by storms primarily propagate as surface and P waves. However, there has been only one report of S wave microseisms excited by strong storms in the North Atlantic, not from typhoons in the Pacific. In this paper, we present the first observations for S wave microseisms caused by typhoons in Western Pacific, via analyzing ambient seismic waveform recorded by a large‐aperture seismic array in China. The results show that three super typhoons clearly generated S wave microseisms at periods of 5–10 s. The strength of S wave microseism is found to be correlated with P wave. The excitation mechanism for S wave microseism observed in regions with flat seafloor may be related to the interaction between P waves and sub‐ocean sedimentary structure.

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