Analyses of Data Recorded by the Network System for Observations of Earthquake Responses in the Kyoto Area

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概要

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• Since March 1996,a new array system, called the Network System for Observations of Earthquake Responses in the Kyoto Area (NSOERKA) is being used to record strong ground motions in Kyoto City. Its purpose is to investigate local site and building responses to the earthquakes in Kyoto and surrounding areas in order to provide a seismological data base for preventing urban disasters. Waveform data from NSOERKA for an earthquake which occurred beneath Kyoto on July 18,1996 (JST) (M_<JMA> 3.6,magnitude determined by the Japan Meteorological Agency) was analyzed. After locating the earthquake, we determined the source mechanism using linear moment tensor inversion of the waveform data. The theoretical seismograms obtained explain the observed SH waves. We then compared the seismic intensities calculated from the observed and theoretical seismograms, because seismic intensity is a conventional, useful tool for estimating the local size of an earthquake disaster. The theoretical seismic intensity was systematically smaller than the observed value, probably because we ignored the sedimentary layers in the earth structure used to calculate the theoretical seismograms.

• 日本自然災害学会の論文

著者

• FUJIWARA Teizo

  School of Environmental Science, University of Shiga Prefecture

• Muramatsu Yoko

  Department of Respiratory Medicine, Toho University Omori Medical Center

• Kobayashi Reiji

  Department Of Geophysics Kyoto University

• OIKE Kazuo

  Department of Earth and Planetary Sciences, Graduate School of Science Kyoto University

• Muramatsu Yoko

  Department Of Geophysics Kyoto University

• Cho Ikuo

  Department Of Geophysics Kyoto University

• Oike Kazuo

  Department Of Geophysics Kyoto University

• Oike Kazuo

  Department Of Earth And Planetary Sciences Graduate School Of Science Kyoto University

• NAKANISHI Ichiro

  Department of Geophysics, Kyoto University

• Fujiwara Teizo

  School Of Environmental Science University Of Shiga Prefecture

• SUZUKI Yoshiyuki

  Disaster Prevention Research Institute, Kyoto University

• Nakanishi Ichiro

  Department Of Geophysics Kyoto University

• Nakanishi Ichiro

  Department Geophysics Kyoto Uniyersity

• Kobayashi Reiji

  Department Of Geophysics Kyoto Univerisity

• Suzuki Yoshiyuki

  Disaster Prevention Research Institute Kyoto University

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