トンレサップ湖の堆積作用に関する予察的研究

• 塚脇 真二

  金沢大学教養部地学教室

• 大河原 正文

  岩手大学工学部建設環境工学科

• リァン ラオ キム

  (財) 日本品質保証機構環境計画センター

• 多田 元彦

  岩手大学工学部建設環境工学科

書誌事項

タイトル別名

• Preliminary Study of Sedimentation in Lake Tonle Sap, Cambodia
• トンレサップコ ノ タイセキ サヨウ ニ カンスル ヨサツテキ ケンキュウ エ

抄録

Lake Tonle Sap, the largest lake in the Indochina Peninsula, lies in central Cambodia. Unique sedimentation is expected in the lake due to drastic changes in its water area between the rainy and dry seasons. As the first step to examine the sedimentary processes of the lake, bottom sediments of the lake and the Tonle Sap River, and surface soils of alluvial deposits were collected and examined in order to reveal the origin of the lake bottom sediments.<BR>As the results it becomes clear that clay minerals in the bottom sediments of the northern part of Lake Tonle Sap are derived both from surface soils on the alluvial deposits around the lake, and metamorphic and granitic rock bodies lying in the Mekong River basin. The latter is transported, as suspended sediments by backward current in the rainy season, into the lake from the Tonle Sap River.<BR>The presence of marine creatures in bottom sediments of the lake suggests that the lake was closely connected with the sea during the last sea-level high stand. Furthermore, there is a strong possibili ty that annual changes due to alternating rainy and dry seasons will be recorded in the lake bottom sediments over the long geological period.

収録刊行物

• 地学雑誌

  地学雑誌 103 (6), 623-636, 1994

  公益社団法人 東京地学協会

キーワード

• Earth-Surface Processes
• Geology
• Geophysics
• Geography, Planning and Development
• Global and Planetary Change

詳細情報

• CRID: 1390282679206312320
• NII論文ID: 110000379725
• NII書誌ID: AN00322536
• DOI: 10.5026/jgeography.103.6_623
• ISSN: 18840884
• ISSN: 0022135X
• NDL書誌ID: 3595901
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I3595901
• データソース種別:
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• 抄録ライセンスフラグ: 使用不可