Document Type

Conference Proceeding

Publication Title

Annals of Glaciology

Rights and Access Note

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Publication Date

2002

First Page

278

Last Page

284

Volume Number

35

Abstract/ Summary

High-resolution chemical records from an 80.4 m ice core from the central Himalaya demonstrate climatic and environmental changes since 1844. The chronological net accumulation series shows a sharp decrease from the mid-1950s, which is coincident with the widely observed glacier retreat. A negative correlation is found between the ice-core delta(18)O record and the monsoon precipitation for Indian region 7. The temporal variation of the terrestrial ions (Ca2+ and Mg2+) is controlled by both the monsoon precipitation for Indian regions 3,7 and 8, located directly south and west of the Himalaya, and the dust-storm duration and frequency in the northern arid regions, such as the Taklimakan desert, China. The NH4+ profile is fairly flat until the 1940s, then substantially increases until the end of the 1980s, with a slight decrease during the 1990s which may reflect new agricultural practices. The SO42- and NO3- profiles show an apparent increasing trend, especially during the period 1940s-80s. Moreover, SO42- concentrations for the East Rongbuk Glacier core are roughly double that of the nearby Dasuopu core at Xixabangma, Himalaya, due to local human activity including that of climbing teams who use gasoline for cooking, energy and transport.

Citation/Publisher Attribution

Qin, DH, Hou, SG, Zhang, DQ, Ren, JW, Kang, SC, Mayewski, PA, and Wake, CP, 2002, Preliminary Results from the Chemical Records of an 80.4 M Ice Core Recovered from East Rongbuk Glacier, Qomolangma (Mount Everest), Himalaya: Annals of Glaciology, Vol 35, v. 35, p. 278-284. Available on publisher's site at: http://www.ingentaconnect.com/content/igsoc/agl/2002/00000035/00000001/art00047

Publisher Statement

© Copyright 2002 by the International Glaciological Society

DOI

10.3189/172756402781816799

Version

publisher's version of the published document

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