%0 Journal Article
%T Indian monsoon influences altitude effect of ¦Ä18O in precipitation/river water on the Tibetan Plateau
%A TanDong Yao
%A Hang Zhou
%A XiaoXin Yang
%J Chinese Science Bulletin
%@ 1861-9541
%D 2009
%I 
%R 10.1007/s11434-009-0497-4
%X The ¦Ä18O variation in precipitation acquired from 28 stations within the network of Tibetan Observation and Research Platform (TORP) is studied, with the focus on the altitude effect of ¦Ä18O in river water during monsoon precipitation in an effort to understand the monsoon influence on isotopic composition in annual river water. It is found that ¦Ä18O in precipitation on the Plateau is influenced by different moisture sources, with significant Indian monsoon influence on ¦Ä18O composition in plateau precipitation and river water. The ¦Ä18O of water bodies in the monsoon domain is generally more depleted than that in the westerly domain, suggesting gradual rainout of southwesterly borne marine moisture in the course of long-distance transportation and lifting over the Himalayas. The lapse rate of ¦Ä18O in river water with altitude is the largest during monsoon precipitation, due to the increased temperature vertical gradient over the southern Plateau region controlled by monsoon circulation. The combination of ¦Ä18O in river water in monsoon (wet) and non-monsoon (dry) seasons shows a larger lapse rate than that in non-monsoon (dry) season alone. As the altitude effect of ¦Ä18O in precipitation and river water on the Tibetan Plateau results from the combined effect of monsoon moisture supply and westerly moisture supply, the ¦Ä18O composition and its altitude effect on the Plateau during monsoon seasons should be considered in the reconstruction of paleoelevation of the Tibetan Plateau.
%K ¦Ä18O
%K Indian monsoon
%K Tibetan Plateau
%K precipitation and river water
%K altitude effect
%U http://link.springer.com/article/10.1007/s11434-009-0497-4