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Preliminary Results from the Chemical Records of an 80.4 M Ice Core Recovered from East Rongbuk Glacier, Qomolangma (Mount Everest), Himalaya
| Content Provider | Semantic Scholar |
|---|---|
| Author | Da-He, Qin Shugui, Hou Dong-Qi, Zhang Jia-Wen, Ren Kang, Shichang Mayewski, Paul Andrew Wake, Cameron P. |
| Copyright Year | 2002 |
| Abstract | High-resolution chemical records from an 80.4m 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 dO record and the monsoon precipitation for Indian region 7. The temporal variation of the terrestrial ions (Ca and Mg) is controlled by both the monsoon precipitation for Indian regions 3,7 and 8, located directly south andwest of the Himalaya, and the dust-storm duration and frequency in the northern arid regions, such as theTaklimakan desert, China.The NH4 + profile is fairly flat until the 1940s, then substantially increases until the end of the1980s, with a slight decrease during the1990swhich may reflect new agricultural practices. The SO4 2^ and NO3 ^ profiles show an apparent increasing trend, especially during the period1940s^80s.Moreover, SO4 2^ 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. |
| Starting Page | 278 |
| Ending Page | 284 |
| Page Count | 7 |
| File Format | PDF HTM / HTML |
| DOI | 10.3189/172756402781816799 |
| Volume Number | 35 |
| Alternate Webpage(s) | http://digitalcommons.library.umaine.edu/cgi/viewcontent.cgi?amp%3Bcontext=ers_facpub&article=1137 |
| Alternate Webpage(s) | https://digitalcommons.library.umaine.edu/cgi/viewcontent.cgi?article=1137&context=ers_facpub&httpsredir=1&referer= |
| Alternate Webpage(s) | https://doi.org/10.3189/172756402781816799 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
