大・中地震の観測記録に見られる短周期波について

• 飯尾 能久

  京都大学防災研究所地震予知研究センター 阿武山観測所

書誌事項

タイトル別名

• High-Frequency Waves in the Observed Seismograms of Large and Moderate Earthquakes
• ダイ チュウ ジシン ノ カンソク キロク ニ ミラレル タン シュウキハ ニ

抄録

The origin of high-frequency waves superposed on low-frequency waves was investigated using observed seismograms at hard rock sites. Two sets of data were used in this paper. One is the seismograms of main shocks and foreshock or aftershock sequences (M2.0-5.2) which occurred in the Kinki district, Japan. The other is the seismograms of the aftershocks of the Central Japan Sea earthquake (M5.3-7.1). For the earthquakes in the Kinki district, P-wave velocitywaveforms of a couple of events which occurred almost at the same location, were compared in the time domain. It was found that the high-frequency waves superposed on low-frequency waves generated by main shocks are very similar to the waveforms of their foreshocks or aftershocks. For the aftershocks of the Central Japan Sea earthquakes, the high frequency waves of every event had almost the same shape, even if its hypocenter is different from each other. Furthermore, their three component waveforms indicated that the high frequency waves did not arrived from the direction of their sources. It was concluded that almost all the high frequency waves analyzed in this paper reflect the site effect rather than the source process.

収録刊行物

• 地震　第２輯

  地震　第２輯 45 (1), 21-32, 1992

  公益社団法人 日本地震学会

キーワード

• High-frequency
• Site response
• Source spectrum
• Observed seismogram

詳細情報

• CRID: 1390282679283373824
• NII論文ID: 130006788312
• NII論文ID: 10006219262
• NII書誌ID: AN00305741
• DOI: 10.4294/zisin1948.45.1_21
• ISSN: 18839029
• ISSN: 2186599X
• ISSN: 00371114
• NDL書誌ID: 3780008
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I3780008
• Web Site: https://www.jstage.jst.go.jp/article/zisin1948/45/1/45_1_21/_pdf
• データソース種別:
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  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可