Knowledge Resource Center for Ecological Environment in Arid Area
| 项目编号 | 41501069 |
| 近20年来青藏高原冰川雪线高度时空变化研究 | |
| 郭忠明 | |
| 主持机构 | 西北大学 |
| 开始日期 | 2016 |
| 结束日期 | 2018 |
| 资助经费 | 200000(CNY) |
| 项目类别 | 青年科学基金项目 |
| 资助机构 | CN-NSFC（国家自然科学基金） |
| 语种 | 中文 |
| 国家 | 中国 |
| 英文简介 | Tibetan Plateau is a region with best developed mountain glaciers in the middle and low-latitude. Glacier is the important water resources for industry and agriculture production in arid area of Northwest China. Glaciers snowline altitudes is an important indicator of glacier changes formation and evolution. Research of the snowline altitude focused only on a single glacial or small region at present. Our study base on the high temporal and spatial resolution remote sensing images and Digital Elevation Model data, and convert the pre-processed remote sensing data into broadband albedo. We classify the glacier surface in the late summer melt season into snow cover zone (accumulation area) and bare ice zone (ablation area) according to the difference between ice and snow albedo, furthermore, decide the snowline altitude and analyze the accuracy of snowline altitude, and finally real the spatial and temporal variations in the snowline altitudes of the glaciers in the Tibetan Plateau. Moreover, we combine the meteorological data to discuss the snowline altitude response to the climate. The study have important significance to estimate glacier mass balance, understanding of regional climate change, reconstruction of the paleoclimate and assessment of glacier ablation process and its impact on water resources. |
| 中文关键词 | 冰川 ; 雪线高度 ; 青藏高原 ; 时空变化 |
| 来源机构 | 西北大学 |
| 资源类型 | 项目 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/346995 |
| 推荐引用方式 GB/T 7714 | 郭忠明.近20年来青藏高原冰川雪线高度时空变化研究.2016. |
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