摘要
根据全球大气降水同位素网络中国33个站点降水与气象资料,结合已有中国各地区降水同位素的研究,系统分析了5种不同季风对中国大气降水同位素组成的影响。各个不同水汽来源区表现出的主要的同位素环境地理效应不同。对比分析冬夏稳定同位素分布规律,在夏季δ18O空间分布规律能够更好揭示水汽运移路线,尤其是东部沿海地区。对乌鲁木齐、石家庄、香港三个站点时间序列对比分析,发现不同季风控制下水汽来源对同位素变化具有决定性作用。
Based on the precipitation and meteorological data provided by 33 stations in China in the global network of isotope in precipitation（ GNIP）,combined with the existing research of precipitation isotope in different areas in China,the effects to China atmospheric precipitation isotope combination which are caused by five different monsoons are analysed in this paper. The region controlled by different moisture sources have different isotope geographic environment effects. Comparatively analysing the distribution law of stable isotope in winter and summer,the rusults show that the moisture movement route can be revealed better by spatical distribution law of δ^18O in summer,espacially in eastern coastal areas. Comprehensively analysing the time series of Urumqi,Shijiazhuang and Hong Kong,the result show that the moisture source controlled by different monsoon has decisive significance to isotope change.
出处
《勘察科学技术》
2015年第1期25-31,共7页
Site Investigation Science and Technology
关键词
稳定同位素
大气降水
水汽来源
时间序列
stable isotope
atmospheric precipitation
moisture source
time series
