河角のマグニチュードと気象庁のマグニチュードとの関係 On Relations between the Magnitudes by KAWASUMI and by JMA

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抄録

In the catalogue of felt earthquakes at Obihiro, it was necessary to give the magnitude for each earthquake. The catalogue published by the Japan Meteorological Agency (JMA), however, does not give specific data before 1926. A table of the magnitudes of the earthquakes from 1885 through 1943 was produced by KAWASUMI. To complete our catalogue before 1926, KAWASUMI's table was useful. However, KAWASUMI's magnitudes needed to be adjusted to JMA's magnitudes. The question of the relations between JMA's magnitudes, M(J), and those of KAWASUMI, M(K), was previously discussed by TSUBOI. After TSUBOI, the difference, M(K)-M(J), was about 0.4 for 42 earthquakes of the magnitude M≧6.0. During the 18 years from 1926 through 1943, there were 512 earthquakes whose magnitudes were documented both by JMA and by KAWASUMI. Using these earthquakes, the relations of both M(K) . and M(J) were expressed as follows : M(K) =0.09{M(J)}^2-0.45M(J)+5.90 According to this equation, the difference, M(K)-M(J), was about 0.1 for M(J)≧7.0M(J) became smaller, the differences became gradually more remarkable.

収録刊行物

  • 帯広畜産大学学術研究報告. 第I部

    帯広畜産大学学術研究報告. 第I部 8(4), 763-774, 1974-09-25

    帯広畜産大学

各種コード

  • NII論文ID(NAID)
    110006453668
  • NII書誌ID(NCID)
    AN00034123
  • 本文言語コード
    JPN
  • 資料種別
    Departmental Bulletin Paper
  • 雑誌種別
    大学紀要
  • ISSN
    0470925X
  • NDL 記事登録ID
    7506862
  • NDL 雑誌分類
    ZR22(科学技術--農林水産--畜産)
  • NDL 請求記号
    Z18-435
  • データ提供元
    NDL  NII-ELS  IR 
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