西九州の縄文の水中遺跡とハイドロアイソスタシー・アセノスフェアの粘性率構造

DOI Web Site 被引用文献4件 参考文献31件

書誌事項

タイトル別名
  • Mid-Holocene Underwater Jomon Sites along the West Coast of Kyushu, Japan, Hydro-isostasy and Asthenospheric Viscosity.
  • Mid-Holocene Underwater Jomon Sites alo

この論文をさがす

抄録

Mid-Holocene underwater Jomon sites typically observed along the west coast of Kyushu, Japan, are reasonably explained by the hydro-isostatic adjustment due to the last deglaciation. The distribution of these underwater Jomon sites is very sensitive to the rheological structure above 250km depth, and comparisons between observations and predictions of sea-level variations indicate a lithospheric thickness of 30-50km and an effective asthenospheric viscosity (-200km thickness) of (8-20)×1019Pa s. The viscosity contrast between the asthenosphere and the underlying upper mantle is less than 10, and a well defined low-viscosity asthenosphere may not exist even in the island arc regions such as the Japanese Islands. Thus regional postglacial sea-levels are spatio-temporally variable and dependent on crustal tilting caused by hydro-isostatic adjustment, and they might have constrained the development of prehistoric human settlements and the way of lives.

収録刊行物

  • 第四紀研究

    第四紀研究 37 (4), 315-323, 1998

    日本第四紀学会

被引用文献 (4)*注記

もっと見る

参考文献 (31)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ