嘉陵江古河道的河曲特征

江华军; 李长安; 张玉芬; 姜端午; 王节涛; 黄树春

doi:10.3799/dqkx.2013.041

Volume 38 Issue 2

Mar. 2013

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Article Navigation > Earth Science > 2013 > 38(2): 417-422

JIANG Hua-jun, LI Chang-an, ZHANG Yu-fen, JIANG Duan-wu, WANG Jie-tao, HUANG Shu-chun, 2013. Meander Characteristics of the Jialing River's Old Channels. Earth Science, 38(2): 417-422. doi: 10.3799/dqkx.2013.041

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JIANG Hua-jun, LI Chang-an, ZHANG Yu-fen, JIANG Duan-wu, WANG Jie-tao, HUANG Shu-chun, 2013. Meander Characteristics of the Jialing River's Old Channels. Earth Science, 38(2): 417-422. doi: 10.3799/dqkx.2013.041

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Meander Characteristics of the Jialing River's Old Channels

doi: 10.3799/dqkx.2013.041

1.
Faculty of Earth Sciences, China University of Geosciences, Wuhan430074, China
2.
Key Laboratory of Biogeology and Environment Geology of Ministry of Education, China University of Geosciences, Wuhan430074, China
3.
Institute of Geophysics and Geomatics, China University of Geosciences, Wuhan430074, China
4.
Geological Environment Monitoring Center of Hunan Province, Changsha410007, China

Received Date: 2012-03-16
Publish Date: 2013-03-01

Abstract

Abstract

Based on data of the remote sensing and field surveys, the distribution of old channels in the Jialing River is explored. A total of 13 old channels are found and determined. They are distributed mainly in the reach of Langzhong-Nanchong of the Jialing River. Statistical meander parameters indicate that their meander ratio C values are all larger than 3.00, with an average value of 7.80. C values of 4 meander belts are larger than 2.20, and the C value of the whole middle reach of ancient Jialing River is 2.75. All these values are much larger than 1.50, the critical value of meandering rivers, suggesting that the ancient Jialing River has characteristics of meandering river pattern. In addition, it is found that the C value of the ancient river is larger than that of modern channel (It is believed that the larger C value may be associated with the lower gradient value J), indicating a lager degree of curve. It can be concluded that a process of natural cutoff of river has once occurred in the Jialing River.
- Jialing River,
- old channels,
- remote sensing,
- meander parameters,
- meander ratio,
- geomorphology

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References(32)

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Meander Characteristics of the Jialing River's Old Channels

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