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[1]TIAN Bing,WANG Yu-yi.Power Spectral Analysis on Periodicity of Sediment Transport in Debris Flow in Jiangjiagou Watershed[J].Research of Soil and Water Conservation,2012,19(04):244-246,251.

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Power Spectral Analysis on Periodicity of Sediment Transport in Debris Flow in Jiangjiagou Watershed

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 19 Number of periods: 2012 04 Page number: 244-246,251 Column: Public date: 2012-08-20

Title:: Power Spectral Analysis on Periodicity of Sediment Transport in Debris Flow in Jiangjiagou Watershed

Author(s):: TIAN Bing^1,2, WANG Yu-yi³; 1. College of Resources & Environment Science, Hebei Normal University, Shijiazhuang 050024, China;
2. Hebei Key Laboratory of Environmental Change and Ecological Construction, Shijiazhuang 050024, China;
3. Key Laboratory of Mountain Hazards and Surface Process, Chinese Academy of Sciences, Chengdu 610041, China

Keywords:: power spectral analysis; debris flow; sediment transport; periodicity

CLC:: P642.23

DOI:: -

Abstract:: The sediment transport not only reflects the geography environment of the formative region of debris flow and the transport capacity but also indicates the accumulating extent of solid matter in accumulation zone of debris flow and the magnitude of debris flow scale. In this paper, based on the observation data for debris flow from 1965 to 2007 in Jiangjiagou watershed, Yunnan Province, the periodicity of transporting sediment in debris flow was analyzed by using the power spectral method. Results showed that transporting sediment of debris flow present the periodicity from 5 years to 7 years. The reason maybe lied in rainfall periodicity from 5 years to 6 years in this basin and the sloping erosion and landslide caused by rainfall.

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