气候变化领域集成服务门户(CCPortal): Comparison of two ice-core chemical records recovered from the Qomolangma (Mount Everest) region, Himalaya

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DOI	10.3189/S0260305500268110
	Comparison of two ice-core chemical records recovered from the Qomolangma (Mount Everest) region, Himalaya
	Hou, SG; Qin, DH; Zhang, DQ; Ren, JW; Kang, SC; Mayewski, PA; Wake, CP
发表日期	2002
ISSN	0260-3055
起始页码	266
结束页码	272
卷号	35
英文摘要	A 40.9 m ice core was recovered from Far East Rongbuk Glacier (FER), Qomolangma (Mount Everest), Himalaya, and an 80.4 m core from neighboring East Rongbuk Glacier (ER). Both are dated by seasonal variations of delta(18)O and major-ionic profiles, together with references of beta-activity peaks. In this paper we compare the chemical records of these two cores to show post-depositional modification processes. The smoothed delta(18)O profiles of the two cores show a similar trend. However, the mean delta(18)O value of the FER core for the period 1954-96 is 3.12parts per thousand less than that of the corresponding part of the ER core, and the major-ionic profiles of the two cores differ considerably. We suggest that melting-away of the snow layer deposited during the pre-monsoon season may account for lower delta(18)O values of the FER than of the ER core, and higher terrestrial ion concentrations in the FER core for the period 1957-63 may contribute to changes by chemical reactions in the presence of snowmelting. The significantly decreased NH4+ and, to a lesser degree, SO42- concentrations in the FER core could be caused by the ion elution process that moved most chemicals away with runoff.
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
来源期刊	ANNALS OF GLACIOLOGY, VOL 35
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/158744
作者单位	Hou, SG (corresponding author), CEA Saclay, CNRS, Lab Mixte CEA, Lab Sci Terre & Environm, F-91191 Gif Sur Yvette, France.
推荐引用方式 GB/T 7714	Hou, SG,Qin, DH,Zhang, DQ,et al. Comparison of two ice-core chemical records recovered from the Qomolangma (Mount Everest) region, Himalaya[J],2002,35.
APA	Hou, SG.,Qin, DH.,Zhang, DQ.,Ren, JW.,Kang, SC.,...&Wake, CP.(2002).Comparison of two ice-core chemical records recovered from the Qomolangma (Mount Everest) region, Himalaya.ANNALS OF GLACIOLOGY, VOL 35,35.
MLA	Hou, SG,et al."Comparison of two ice-core chemical records recovered from the Qomolangma (Mount Everest) region, Himalaya".ANNALS OF GLACIOLOGY, VOL 35 35(2002).