青藏高原那曲河流域降水及河流水体中氧稳定同位素研究

来源 :水科学进展 | 被引量 : 0次 | 上传用户：sms888

【摘要】

：

根据青藏高原中部那曲河流域1998年夏季测得的上下游中稳定同位素的日变化,并与同期观测的流域降水中稳定同位素比较,分析了河水中δ18O的变化特征,初步研究了该流域的稳定同

【作者】

：

田立德姚檀栋

【机构】

：

中国科学院寒区旱区环境与工程研究所,Graduate School of Environmental Earth Science,Institute of Geoscience

【出处】

：

水科学进展

【发表日期】

：

2004年期

【关键词】

：

那曲河流域河流水体稳定同位素水文循环

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根据青藏高原中部那曲河流域1998年夏季测得的上下游中稳定同位素的日变化,并与同期观测的流域降水中稳定同位素比较,分析了河水中δ18O的变化特征,初步研究了该流域的稳定同位素水文循环过程.河水中δ18O的变化幅度远小于降水,它是降水中δ18O、降水量以及地表蒸发过程共同作用的结果.研究发现湖水对于稳定同位素变化起着显著的调节作用.河水中δ18O与流域降水中δ18O的差异可能反映了该流域强烈的地表和湖面蒸发作用.

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青藏高原那曲河流域降水及河流水体中氧稳定同位素研究

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