海南岛河水稳定同位素空间分布特征及其对水汽输送的指示
Spatial Distribution Characteristics of Stable Isotopes in River Water in Hainan Island:Implication for Water Vapor Delivery Path
林杰 1王照翻 2张云锺2
作者信息
- 1. 中国地质调查局广州海洋地质调查局,广东广州 511458
- 2. 中国地质调查局海口海洋地质调查中心,海南海口 571127
- 折叠
摘要
热带低纬度地区水循环是全球气候系统演变的重要驱动力,海南省是我国唯一的热带岛屿省份,是热带水汽循环研究的理想地区.水体的氢、氧稳定同位素是水文循环研究的重要手段,通过海南岛主要河流的稳定同位素组成及其空间分布特征,对海南岛水汽输送路径和来源进行研究.海南岛河水同位素呈纬向上从西向东逐渐正偏,经向上对称分布的特征,海南岛东部河水同位素呈现"高度效应",而西部昌化江河水同位素呈现"反高度效应".海南岛河水同位素空间分布规律表明,地形是控制河水同位素空间分布的最主要因素,海南岛东南部为水汽输送的迎风坡,而西南部处于"雨影区",水汽从东向西输送.
Abstract
The water cycle in the tropical regions is the important driving force for the evolution of the global climate system,and Hainan Province is the only tropical island province in China,which is an ideal area for the study of tropical water vapor cycle.Hydrogen and oxygen stable isotopes in water are important method for water cycle research.In this study,the transport path and source of water vapor in Hainan Island are studied through the spatial distribution of stable isotopes of major rivers in Hainan Island.The isotopes of the river water of Hainan Island are gradually positive from west to east in the latitude direction,and are symmetrically distributed in the longitude direction.The isotopes of the southeastern river of Hainan Island show the"altitude effect",while the isotopes of the Changhua River in southwestern Hainan Island show the"anti-altitude effect".The spatial distribution of river water isotopes in Hainan Island shows that topography is the most important factor controlling the spatial distribution of river water isotopes,and the eastern part of Hainan Island is the windward slope of water vapor transport,while the west is in the"rain shadow area",and water vapor is transported from east to west.
关键词
海南岛/河水/稳定同位素/地形/水汽输送/环境地质Key words
Hainan Island/river water/stable isotope/topography/moisture transport/environmental geology引用本文复制引用
出版年
2024
NETL
NSTL
万方数据