Knowledge Resource Center for Ecological Environment in Arid Area
| 喜马拉雅山中段现代冰川环境与印度季风 | |
| 其他题名 | The Modern Glaciological Environment in the Central Himalayas and Indian Monsoon |
| 张东启 | |
| 出版年 | 2001 |
| 学位类型 | 博士 |
| 导师 | 秦大河 |
| 学位授予单位 | 中国科学院寒区旱区环境与工程研究所 |
| 中文摘要 | 喜马拉雅山中段（27°57′N-30°30′N，81°07′E-88°54′E）位于青藏高原和印度次大陆之间，其气候在夏季和冬季分别受到印度夏季风和西风的控制和影响，是气候变化和环境变迁的敏感地区。高海拔、高积累率和低温环境十分有利于雪冰介质高分辨率和高保真性地储存气候环境信息，因此该地区的雪冰环境中记录有丰富的印度季风变化和青藏高原气候变化的信息。在20世纪全球气候变暖的大背景下，该地区冰川普遍退缩，季风环流形式也可能发生了某些变化。在预测未来全球气候变化的研究中，该地区将成为一个热点地区。1998年5月-2000年6月，笔者参加了三次\ |
| 英文摘要 | Located between Tibetan Plateau and the sub-continent of India, the central Himalayas(27°57'N-30°30'N, 81°07'E-88°54'E) is sensitive to climatic and environmental variations because climate in this region is dominated by Indian Monsoon in summer and by the westerly cyclonic activity in winter. Owing to the high altitude, high accumulation rate and low temperature, this region is favorable for the preservation of ice core records with high resolution and fidelity, which provides luxuriant information about the climatic and environmental changes. Under the background of global warming, glaciers have widespread retreated and some changes maybe taken place in the circulation of Indian Monsoon in this region. The central Himalayas will be a hotspot region in the prediction of future global climate change. From May 1998 to June 2000, three expeditions have been carried out in the Mount Everest (86°55'E, 27°59'N, 8848 m a.s.l.) region. 75 samples of precipitation were collected at the terminal moraine of the East Rongbuk glacier (5140m a.s.l.) from June 18 to September 29, 1998. 49 fresh snow samples (from August 30 to September 9, 1998 and June 4 to June 13, 199.9, respectively) and 107 samples from 6 snow pits were collected in accumulation zone (6250m a.s.l. to 6500m a.s.l.). In September 1998, an 80.36m ice core was also recovered in accumulation zone of the East Rongbuk Glacier on the northern slope of Mount Everest. The ice core was dated by seasonal variations of 5 1SO (measured by Mat-Plus gas isotopic mass spectrograph with precision of 0.5 %\ |
| 中文关键词 | 喜马拉雅山中段 ; 东绒布冰川 ; 冰川环境 ; 印度季风 |
| 英文关键词 | Central Himalayas East Rongbuk Glacier Glacial environment Indian Monsoon |
| 语种 | 中文 |
| 国家 | 中国 |
| 来源机构 | 中国科学院西北生态环境资源研究院 |
| 资源类型 | 学位论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/286271 |
| 推荐引用方式 GB/T 7714 | 张东启. 喜马拉雅山中段现代冰川环境与印度季风[D]. 中国科学院寒区旱区环境与工程研究所,2001. |
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