Seasonal variation of drainage system in the lower ablation area of a monsoonal temperate debris-covered glacier in Mt. Gongga, South-Eastern Tibet | |
Qiao Liu1; Shiyin Liu2; Wulong Cao3; Liu, Qiao | |
刊名 | Water (Switzerland) |
2018 | |
卷号 | 18期号:8页码:1050 |
关键词 | Subglacial Drainage System Temperate Glacier Debris-covered Glacier Glacial Hydrology |
ISSN号 | 2073-4441 |
DOI | 10.3390/w10081050 |
产权排序 | 1 |
英文摘要 | Seasonal evolution of the subglacial drainage system in the lower ablation area of the Hailuogou glacier ice tongue were revealed by repeated dye tracer (Rhodamine WT) experiments during the 2009 ablation season. Between April and October, 18 dye tracer experiments were conducted by injecting the tracer at one location of the lower ablation area of the Hailuogou Glacier to diagnose the seasonal variation of the subglacial drainage system of this section of glacier ice tongue. Using a simple advection-dispersion model (ADM), the flow velocity, hydrodynamic dispersion coefficient, and degree of tracer spreading were deduced. Tracer transit velocity through the tested subglacial channel varied from 0.148 to 0.555 m s during the 2009 ablation season. Dispersivity showed a relatively high value than that found at other glaciers, which varied between 27.05 and 287.49 m s. Seasonal changes of these indexes indicated that the subglacial drainage system of the lower ablation area of the Hailougou Glacier is a relative stable existing system in the case of its longitudinal shape, whereas its hydraulic efficiency is low in the early and late ablation seasons and high during the middle of summer due to subglacial channel expansion. |
电子版国际标准刊号 | 2073-4441 |
语种 | 英语 |
内容类型 | 期刊论文 |
源URL | [http://ir.imde.ac.cn/handle/131551/23485] |
专题 | 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
通讯作者 | Liu, Qiao |
作者单位 | 1.Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China; 2.Institute of International Rivers and Eco-security, Yunnan University, Kunming 650500, China; 3.Administration Bureau of Hailuogou in Ganzi Tibetan Autonomous Prefecture, Sichuan 626102, China |
推荐引用方式 GB/T 7714 | Qiao Liu,Shiyin Liu,Wulong Cao,et al. Seasonal variation of drainage system in the lower ablation area of a monsoonal temperate debris-covered glacier in Mt. Gongga, South-Eastern Tibet[J]. Water (Switzerland),2018,18(8):1050. |
APA | Qiao Liu,Shiyin Liu,Wulong Cao,&Liu, Qiao.(2018).Seasonal variation of drainage system in the lower ablation area of a monsoonal temperate debris-covered glacier in Mt. Gongga, South-Eastern Tibet.Water (Switzerland),18(8),1050. |
MLA | Qiao Liu,et al."Seasonal variation of drainage system in the lower ablation area of a monsoonal temperate debris-covered glacier in Mt. Gongga, South-Eastern Tibet".Water (Switzerland) 18.8(2018):1050. |
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