[1]LIU Yan,ZHANG Pu.Analysis on the Correlation between Abundant or Low Runoff and Alpine Snow Cover Based on Remote Sensing Data——A Case Study of Manasi River Basin in Tianshan Mountain[J].Research of Soil and Water Conservation,2010,17(03):44-48.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
17
Number of periods:
2010 03
Page number:
44-48
Column:
Public date:
2010-06-20
- Title:
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Analysis on the Correlation between Abundant or Low Runoff and Alpine Snow Cover Based on Remote Sensing Data——A Case Study of Manasi River Basin in Tianshan Mountain
- Author(s):
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LIU Yan, ZHANG Pu
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Institute of Desert Meteorological, China Meteorological Administration, Urumqi 830002, China
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- Keywords:
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snowmelt; Manasi river; MOD10A2; snow cover; abundant or low runoff
- CLC:
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P332;TP79
- DOI:
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- Abstract:
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Alpine precipitation and snowmelt are the main source to the runoff of Manasi river. Based on MOD10A2, land remote sensing inspecting data from MODIS, monthly snow cover area data from 2001 to 2007 in the study basin are made. By using all-year runoff data from 1957 to 2007 in Kensiwate hydrological station, the character of abundant or low runoff in the study period is analyzed. This paper emphatically analyzes the correlation between runoff in snowmelt period, from April to July, and alpine snow cover and temperature from January to May in different zones classified by the elevation in the basin. The results are as follows: ①There is notable character in the monthly change of snow cover area in the study basin. In the period from the middle ten days of January to the first ten days of August, snow cover area gradually reduces. And it gradually increases in the other period. ②The runoff amount in the basin has been increasing since 1990s and became abundant in 2002 and low in 2003. ③In spring, snowmelt is the main supplies to the water resource of the basin. As the result of the gradually rising temperature, snow cover area reduces and runoff increases from day to day. ④The more alpine snow cover area accumulated in winter, the more solid-state water stored. As temperature rises more quickly in the spring, the rate of snowmelt is more rapidly and runoff in the river channel becomes more abundant.