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Variation of teleseismic short-period waveforms at Matsushiro Seismic Array System

Earth, Planets and Space volume 57, pages 563–570 (2005)Cite this article

Abstract

We investigate the origin of variation of teleseismic P phase waveforms recorded at Matsushiro Seismic Array System. Short-period, vertical component waveforms from three source regions were analyzed separately in the frequency domain. Observed variation is mainly attributed to the site effects, which are frequency dependent and strongly depend on the incoming azimuth. Such variation is not seen for the pre-event noise spectra. The secondary wavefield that is excited by the incident P phase is the likely cause of the observed waveform variation.

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Authors and Affiliations

  1. Earth Science Group, Graduate School of Human and Environmental Studies, Kyoto University, Kyoto, 606-8501, Japan

    Mamoru Kato

  2. Department of Geophysics, Graduate School of Science, Kyoto University, Kyoto, 606-8502, Japan

    Ichiro Nakanishi

  3. Meteorological Research Institute, 1–1 Nagamine, Tsukuba, 305-0052, Japan

    Hiroyuki Takayama

Authors
  1. Mamoru Kato
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  2. Ichiro Nakanishi
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  3. Hiroyuki Takayama
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Correspondence to Mamoru Kato.

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Kato, M., Nakanishi, I. & Takayama, H. Variation of teleseismic short-period waveforms at Matsushiro Seismic Array System. Earth Planet Sp 57, 563–570 (2005). https://doi.org/10.1186/BF03351836

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  • DOI: https://doi.org/10.1186/BF03351836

Key-words

  • Waveform analysis
  • seismic coda
  • seismic noise
  • seismograph network