Spatial variation of stable isotopes in different waters during melt season in the Laohugou Glacial Catchment, Shule River basin
文献类型：期刊论文
| 作者 | WU Jin-kui; DING Yong-jian; YANG Jun-hua; LIU Shi-wei; CHEN Ji-zu; ZHOU Jia-xin; QIN Xiang |
| 刊名 | Journal of Mountain Science
 |
| 出版日期 | 2016-08 |
| 卷号 | 13期号:8页码:1453-1463 |
| 关键词 | Stable isotopes Precipitation/snow/ice Altitude effect Melt water Laohugou Glacial Catchment Qilian Mountains |
| ISSN号 | 1672-6316 |
| 通讯作者 | WU Jin-kui |
| 英文摘要 | To evaluate isotopic tracers at natural abundances by providing basic isotope data of the hydrological investigations and assessing the impacts of different factors on the water cycle, a total of 197 water samples were collected from the Laohugou Glacial catchment in the Shule River basin northwestern China during the 2013 ablation seasons and analyzed their H- and O-isotope composition. The results showed that the isotopic composition of precipitation in the Qilianshan Station in the Laohugou Glacial catchment was remarkable variability. Correspondingly, a higher slope of δ18O-δD diagram, with an average of 8.74, is obtained based on the precipitation samples collected on the Glacier No.12, mainly attributed to the lower temperature on the glacier surface. Because of percolation and elution, the isotopic composition at the bottom of the firn is nearly steady. The δ18O /altitude gradients for precipitation and melt water were -0.37‰/100 m and -0.34‰/100 m, respectively. Exposed to the air and influenced by strong ablation and evaporation, the isotopic values and the δ18O vs δD diagram of the glacial surface ice show no altitudinal effect, indicating that glacier ice has the similar origins with the firn. The variation of isotopic composition in the melt water,varying from -10.7‰ to -16.9‰ (δ18O) and from -61.1‰ to -122.1‰ (δD) indicates the recharging of snowmelt and glacial ice melt water produced at different altitudes. With a mean value of -13.3‰ for δ18O and -89.7‰ for δD, the isotopic composition of the stream water is much closer to the melt water, indicating that stream water is mainly recharged by the ablation water. Our results of the stable isotopic compositions in natural water in the Laohugou Glacial catchment indicate the fractionations and the smoothing fluctuations of the stable isotopes during evaporation, infiltration and mixture. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/17446]  |
| 专题 | 成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2016_Vol13 No.8 |
| 推荐引用方式 GB/T 7714 | WU Jin-kui,DING Yong-jian,YANG Jun-hua,et al. Spatial variation of stable isotopes in different waters during melt season in the Laohugou Glacial Catchment, Shule River basin[J]. Journal of Mountain Science,2016,13(8):1453-1463. |
| APA | WU Jin-kui.,DING Yong-jian.,YANG Jun-hua.,LIU Shi-wei.,CHEN Ji-zu.,...&QIN Xiang.(2016).Spatial variation of stable isotopes in different waters during melt season in the Laohugou Glacial Catchment, Shule River basin.Journal of Mountain Science,13(8),1453-1463. |
| MLA | WU Jin-kui,et al."Spatial variation of stable isotopes in different waters during melt season in the Laohugou Glacial Catchment, Shule River basin".Journal of Mountain Science 13.8(2016):1453-1463. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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