Abstract
AbstractMicroseisms generated by storms primarily propagate as surface andPwaves. However, there has been only one report ofSwave microseisms excited by strong storms in the North Atlantic, not from typhoons in the Pacific. In this paper, we present the first observations forSwave 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 generatedSwave microseisms at periods of 5–10 s. The strength ofSwave microseism is found to be correlated withPwave. The excitation mechanism forSwave microseism observed in regions with flat seafloor may be related to the interaction betweenPwaves and sub‐ocean sedimentary structure.
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