RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2012, Vol. 21 >> Issue (05): 533-.

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PALAEOFLOOD HYDROLOGICAL STUDY IN THE QIANFANG SECTION OF YUNXIAN COUNTY IN THE UPPER REACHES OF THE HANJIANG RIVER

QIAO Jing, PANG Jiangli, HUANG Chunchang, ZHA Xiaochun, ZHOU Yali, HU YAwei   

  1. (College of Tourism and Environmental Sciences, Shaanxi Normal University, Xi’an 710062, China)
  • Online:2012-05-20

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Abstract:

Palaeoflood hydrological investigations were carried out in the Yunxian Reach in the upper reaches of the Hanjiang River.The results indicate that these deposits have been deposited by suspended sediment load in the palaeoflood water.They are different from eolian loess and soil in the Holocene profile.The palaeoflood events were dated to 200 A.D.by OSL dating method and archaeological dating on human remains underlying the palaeoflood SWD.The peak discharges of the palaeofloods were reconstructed to 65 830 m3/s with the slopearea method.This result was checked with various methods which indicate the reconstructed peak discharge is reliable. This result provides significant data for hydraulic engineering and flood control in the upper reaches of the Hanjiang River

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