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Modification of stable isotopes in snow and related post-depositional processes on a temperate glacier of Mt. Yulong, southeast Tibetan Plateau

文献类型：期刊论文

作者Pu, Tao2; Kong, Yanlong1; Wang, Shijin2; Shi, Xiaoyi3; Wang, Ke3; Niu, Hewen2; Chen, Pengfei2
刊名JOURNAL OF HYDROLOGY
出版日期2020-05-01
卷号584页码:12
关键词Stable isotopes Post-depositional processes Snow Temperate glacier Tibetan plateau
ISSN号0022-1694
DOI10.1016/j.jhydrol.2020.124675
英文摘要Stable isotopes are useful for obtaining hydroclimatic and past environmental information. The record of stable isotopes in snow not only reflects the deposition condition but also provides information on post-depositional processes, which benefits ice core studies. In this study, delta O-18 and delta D in new snow, surface snow and snowpack were measured to analyze deposited and post-depositional processes on a temperate glacier at the southeast margin of the Tibetan plateau. The results indicated that new snow and surface snow were relatively depleted in heavy isotopes during the post-monsoon period and enriched in heavy isotopes during the westerly and pre-monsoon period. Surface snow was enriched in O-18 and D relative to new snow sampled during the same period. Isotopic homogenization was observed in May and June snowpack, illustrating the effect of melting on isotopes. The relatively low slope (< 8) for the delta D-delta O-18 line during the post-monsoon period and high slope (> 8) during the westerly and pre-monsoon periods corresponded to temperature change. Although the vertical isotopic composition of snowpack sampled in April recorded the deposited information of winter precipitation, the post-depositional processes could have altered the isotopic composition of snow. During the accumulation period, wind drift was an crucial factor leading to abrupt isotopic modification in snow, which was verified using the energy-balance model and wind regime. During the ablation period, the decreasing trend of the slope and the gradual enrichment of O-18 and D in the leaving snow mainly resulted from the isotopic exchange between liquid and solid water. The study enhanced our understanding of the controlling post-depositional processes on temperate glaciers.
WOS关键词MASS-BALANCE ; HYDROGRAPH SEPARATION ; SEASONAL SNOWPACK ; SUMMER MONSOON ; CLIMATE-CHANGE ; LIJIANG BASIN ; ICE CORE ; NO. 1 ; FRACTIONATION ; PRECIPITATION
资助项目National Natural Science Foundation of China[91647101] ; National Natural Science Foundation of China[41401083] ; State Key Laboratory of Cryospheric Sciences[SKLCS-ZZ-2020] ; State Key Laboratory of Cryospheric Sciences[SKLCS-OP-2019-10]
WOS研究方向Engineering ; Geology ; Water Resources
语种英语
WOS记录号WOS:000527390200067
出版者ELSEVIER
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; State Key Laboratory of Cryospheric Sciences ; State Key Laboratory of Cryospheric Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; State Key Laboratory of Cryospheric Sciences ; State Key Laboratory of Cryospheric Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; State Key Laboratory of Cryospheric Sciences ; State Key Laboratory of Cryospheric Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; State Key Laboratory of Cryospheric Sciences ; State Key Laboratory of Cryospheric Sciences
源URL[http://ir.iggcas.ac.cn/handle/132A11/96232]  
专题地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室
通讯作者Pu, Tao
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China
3.Lanzhou Univ, Coll Earth & Environm Sci, MOE Key Lab West Chinas Environm Syst, Lanzhou 730000, Peoples R China
推荐引用方式
GB/T 7714		 Pu, Tao,Kong, Yanlong,Wang, Shijin,et al. Modification of stable isotopes in snow and related post-depositional processes on a temperate glacier of Mt. Yulong, southeast Tibetan Plateau[J]. JOURNAL OF HYDROLOGY,2020,584:12.
APA Pu, Tao.,Kong, Yanlong.,Wang, Shijin.,Shi, Xiaoyi.,Wang, Ke.,...&Chen, Pengfei.(2020).Modification of stable isotopes in snow and related post-depositional processes on a temperate glacier of Mt. Yulong, southeast Tibetan Plateau.JOURNAL OF HYDROLOGY,584,12.
MLA Pu, Tao,et al."Modification of stable isotopes in snow and related post-depositional processes on a temperate glacier of Mt. Yulong, southeast Tibetan Plateau".JOURNAL OF HYDROLOGY 584(2020):12.

入库方式： OAI收割

来源：地质与地球物理研究所

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