Geomorphic Development of the Nakhon Si Thammarat Coastal Plain, Southern Thailand
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- Masatomo UMITSU
- 奈良大学特命教授 名古屋大学名誉教授
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- Naruekamon JANJIRAWUTTIKUL
- Pedogenesis of Acid Sulfate Soils in the Lower Central Plain of Thailand
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- Eisuke ONO
- 駒澤大学文学部教授
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- Kumiko KAWASE
- 愛媛大学教育学部准教授
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- Akio OHIRA
- 宮崎大学大学院教育学研究科教授
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- Paiboon PRAMOJANEE
- 元タクシン大学教授
Bibliographic Information
- Other Title
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- タイ南部ナコンシタマラート海岸平野における砂州の形成と発達
Abstract
<p>This study presents the development of sandbars in the Nakhon Si Thammarat coastal plain of southern Thailand in the late Holocene. Sandbars in the plain are Pleistocene sandbar-X, Holocene sandbars as sandbar-I, -II, and -III, and buried Holocene sandbar-Y. Sandbar-I extends about 80 km from north to south. Sandbar-II develops east of sandbar-I, with a length of about 25 km. The most recent sandbar-III is located along the current shoreline and extends to the north. Buried sandbar-Y extends from the area around Mt. Phrabat to the south. Pleistocene sandbar-X in the western part of the coastal plain develops clearly and diverges in its southern part. Radio-carbon dating of the lower peat layers behind the sandbar-I indicate around 7,500 cal BP. Peat layers around the Lake Noi located behind the sandbar-Y indicate similar ages but the peat layer is overlain by muddy sediments. Based on the spatial shape of sandbars-X, -I, and -II, and buried sandbar-Y, they developed in the direction from north to south. Sandbar-III, however, developed from south to north. This reverse direction of sandbar development is due to the change in wave or littoral current conditions after 1,500 cal BP.</p>
Journal
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- E-journal GEO
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E-journal GEO 17 (1), 1-11, 2022
The Association of Japanese Geographers
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Details 詳細情報について
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- CRID
- 1390854717465939200
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- ISSN
- 18808107
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
- KAKEN
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- Abstract License Flag
- Disallowed