北海道大学構内で観察された液状化跡

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書誌事項

タイトル別名
  • Fossil liquefactions due to earthquakes in the Hokkaido University campus
  • ホッカイドウ ダイガク コウナイ デ カンサツサレタ エキジョウカアト センシ
  • Interpretation of prehistorical earthquakes and making processes of liquefaction s t r uctures
  • 先史地震と液状化構造形成過程の解読

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抄録

On the basis of fossil liquefaction structures observed in the Hokkaido University campus, paleoearthquakes that had struck Sapporo-city are discussed. The results are as follows: (1)Paleoearthquakes had occurred three times during last ca. two thousand and several hundred years. The latest paleoearthquake should be identified with the 1834 Ishikari-earthquake. The older paleoearthquakes occurred at around 2000 years BP. and during the time between A. D.10. century and the end of A. D.18. century, respectively. (2) The return period of earthquake is estimated to be from 2000 to several hundred years. (3) Active fault which caused liquefaction can not be decided, because of lack of the historical records.

収録刊行物

  • Active Fault Research

    Active Fault Research 1996 (14), 9-18, 1996

    Japanese Society for Active Fault Studies

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