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《Journal of Glaciology and Geocryology》 2008-02
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Analysis of the Recent Features of the Meltwater Runoff from the Qiyi Glacier,Qilian Mountains

SONG Gao-ju1,2,WANG Ning-lian1,CHEN Liang1,2,HE Jian-qiao1,2,JIANG Xi1,2,WU Xiao-bo1,2(1.State Key Laboratory of Cryospheric Science,CAREEERI,CAS,Lanzhou Gansu 730000,China;2.Graduate University of Chinese Academy of Sciences,Beijing 100049,China)  
Based on the measured hydrological data from 1st August to 30st,2006,the producing,converging and draining characteristics of meltwater runoff from the Qiyi Glacier are analyzed and then its ablated characteristics are revealed.It is found that the daily maximal discharge is nine times as much as the daily minimal discharge.Estimating the glacier ablation,calculating its runoff modulus,and comparing with the previous observed results,it can be concluded that the amount and intensity of the glacier ablation have increased in the past few years;especially,in 2006 the ablation was the maximum among the latest years.Despite the amount of glacier ablation obviously dissimilar from year to year,in general,the glacier is in a state of shrinking,and that,under the condition of global warming,the shrinkage will be continuous.Analyzing the observations at the two hydrological sections beneath the glacier demonstrates that seepage loss between the two sections,not more than 2 km in distance,accounts for about 1/3 of the total meltwater runoff at the first section,thus,it is believed that,in the process of the meltwater runoff flows downwards,a part of meltwater shifts to subsurface flow.
【Fund】: 中国科学院创新团队国际合作伙伴计划项目(CXTD-Z2005-2);; 国家重点基础研究发展计划(973计划)项目(2005CB422003);; 国家杰出青年科学基金项目(40525001);; 中国科学院优秀人才项目(2005406);; 科技基础性工作专项"中国冰川资源及其变化调查"项目(2006FY1102007)资助
【CateGory Index】: P343.6
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