三陸海岸における津波による侵食地形の特徴:―地上レーザ測量による解析― Characteristics of Erosional Morphology Formed by Tsunami Waves along the Sanriku Coast, Northeastern Japan:Analysis Using Terrestrial Laser Scanning

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抄録

 This study examines the characteristics of landforms affected by the 2011 tsunami along the rocky coasts of the Sanriku area in northeastern Japan. We use terrestrial laser scanning to take detailed topographic measurements of slopes near the coast. As unique topographic characteristics, small cliffs in bedrocks frequently found near the height of the maximum tsunami surface along the coastal slopes are ascribed to cumulative erosion by repeated tsunamis in the mid to late Holocene. Shallow landslides whose scarps are located near the tsunami surface also suggest that they were triggered by water saturation and/or stripping by the tsunami flow. Such characteristic landforms require further careful analysis, not only on the Sanriku coast but also in other areas with rocky coasts, to estimate the effects of repeated tsunamis on bedrock morphology.

収録刊行物

  • 地學雜誌

    地學雜誌 124(2), 241-258, 2015

    公益社団法人 東京地学協会

各種コード

  • NII論文ID(NAID)
    130005069552
  • NII書誌ID(NCID)
    AN00322536
  • 本文言語コード
    JPN
  • ISSN
    0022-135X
  • NDL 記事登録ID
    026371232
  • NDL 請求記号
    Z15-169
  • データ提供元
    NDL  J-STAGE 
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