インド東海岸クリシュナデルタの表層堆積物の¹⁴C年代値とその地形学的意義

• 貞方 昇

  北海道教育大学函館校地理学研究室

• ララオ カカニナゲシュワ

  アンドラ大学地質工学部

書誌事項

タイトル別名

• Radiocarbon Ages of the Sub-surface Sediments in the Krishna Delta, India, and Their Geomorphological Implications.
• Radiocarbon Ages of the Sub-surface Sed
• Radiocarbon ages of the subsurface sediments in the Krishna delta and their geomorphological significance

抄録

The geomorphological study and the radiocarbon datings of the sub-surface sediments in the Krishna delta, indicate that the strandline around 2, 200 years ago was located at more than 40km inland from the present river mouth, and the delta tront has prograded more than 5km in the last 250 years. These facts differ somewhat from the previous view on the formation of the alluvial plain in the east coast of India that has been thought to be closely related to sea level oscillations since the Holocene maximum transgression. The rapid progradation of the delta front may be caused by human impact in the upper reaches of the Krishna river, and more detailed data are required to confirm this hypotheses.

収録刊行物

• 季刊地理学

  季刊地理学 49 (3), 163-170, 1997

  東北地理学会

キーワード

• クリシュナデルタ
• 旧海岸線
• 浜提
• デルタ前縁前進
• 人為的影響

詳細情報

• CRID: 1390282679440533120
• NII論文ID: 10002695728
• NII書誌ID: AN10379267
• DOI: 10.5190/tga.49.163
• ISSN: 18841252
• ISSN: 09167889
• NDL書誌ID: 4281969
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4281969
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可