集集地震により生じた台湾中西部における滝の地震後10 年間の後退速度とその変化

書誌事項

タイトル別名
  • Knickpoint Recession Rates for 10 Years after the Chi-Chi Earthquake, Central Taiwan
  • シュウシュウ ジシン ニ ヨリ ショウジタ タイワン チュウセイブ ニ オケル タキ ノ ジシン ゴ 10ネンカン ノ コウタイ ソクド ト ソノ ヘンカ
公開日
2013-01-25
資源種別
journal article
DOI
  • 10.60380/tjgu.34.1_21
公開者
一般社団法人 日本地形学連合

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説明

<p>Recession rates of four waterfalls formed by the surface deformation of the Chelungpu Fault at the time of Chi-Chi Earthquake on September 21, 1999 in central Taiwan were measured in the field and assessed with an empirical model of waterfall erosion. The model represents the balance between the erosive force of streams versus bedrock resistance with relevant environmental parameters of discharge (drainage area and precipitation), waterfall form and bedrock strength. The recession rates of three waterfalls increased from the first 6 years to the following 4 years. This increase in the recession rates basically corresponds to the changes in environmental factors including precipitation increase and waterfall width narrowing. The recession rate of another waterfall decreased, but this can be explained by artificial modification of riverbed. The recession rates are very high comparing with waterfalls in other places, probably due to large amount of hard gravels transported on the weak bedrock from the upstream areas.</p>

収録刊行物

  • 地形

    地形 34 (1), 21-36, 2013-01-25

    一般社団法人 日本地形学連合

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