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降水中δ1 8O的分析表明 ,本区夏季风期间大陆性气团降水中δ1 8O值高于海洋性气团降水 ,同类型气团降水中δ1 8O与气温之间呈正相关关系。达索普冰川高海拔区高程效应明显的降水过程 ,δ1 8O的垂直变化梯度较小为 - 0 .1‰ / 10 0m。无高程效应特征的降水过程 ,可能与降水时的天气状况有关。同时地形对降水中δ1 8O随高程的分布有较大影响。达索普冰川区近东西向区域内降水中δ1 8O分布与高程效应一致 ,而近南北向区域内则与高程效应相反。
The analysis of δ18O in precipitation shows that the δ180 value of the continental air mass during the summer monsoon is higher than that of the marine air mass, and the δ18O in the same type of precipitation is positively correlated with the air temperature. The elevation of the Dabeedupu glacier in the high altitude area shows obvious precipitation process. The vertical variation gradient of δ18O is small at -0.1 ‰ / 100m. Precipitation without elevation characteristics may be related to the weather conditions during precipitation. At the same time, the terrain has a great influence on the distribution of δ18O in precipitation. The δ 180 distribution of precipitation in the near east-west precipitation in the Dasuopu glacier region is consistent with the elevation effect, while in the near-north-south region, the δ 180 distribution is opposite to the elevation effect.