Characteristics of Fluvial Lowland in Lower Reach of the Stung Sen River, Central Cambodia(<Featured Articles>Turkey-Japan Joint Conference on Geomorphology)
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概要
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The Stung Sen River is a major tributary of the Tonle Sap River systems, and several pre-Angkor strongholds are located in its drainage basin. Geomorphological characteristics and development of floodplain in lower reach of the Stung Sen River is discussed by sedimentary core analysis and field survey. The floodplain is composed of more than 10m of fluvial deposits which overlay the heavily weathered basement. Five depositional units and alternation of sandy channel deposits and suspended deposits are distinguished. The accumulation rate of the successive floodplain deposits is calculated as 0.1-0.6mm/yr by AMS-^<14>C ages, while the rate near the Stung Sen main channel is large, to be replaced frequently by the channel shifts. Fluctuation in the groundwater level is shown by the deposits color. This represents distinct seasonal environmental changes caused by monsoon.
- 2011-04-25
著者
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Kubo Sumiko
School Of Education Waseda Univ.
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Kubo Sumiko
School Of Education Waseda University
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NAGUMO Naoko
Department of Natural Environmental Studies, Graduate School of Frontier Sciences, The University of
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SUGAI Toshihiko
Department of Natural Environmental Studies, Graduate School of Frontier Sciences, The University of
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Nagumo Naoko
Department Of Natural Environmental Studies Graduate School Of Frontier Sciences The University Of T
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Sugai Toshihiko
Department Of Natural Environmental Studies Graduate School Of Frontier Sciences The University Of T
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Sugai Toshihiko
Department Of Natural Environmental Studies Graduate School Of Frontier Sciences The University Of T
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- Characteristics of Fluvial Lowland in Lower Reach of the Stung Sen River, Central Cambodia(Turkey-Japan Joint Conference on Geomorphology)