Synoptic variation of stable isotopes in precipitation and ground level vapour in a humid tropical region, Kerala, India

被引：8

作者：

Hameed, Ahmed Shahul ^{[1
]}

Resmi, Thoppil Ramakrishnan ^{[1
]}

Praveenbabu, Mohan ^{[1
]}

Sudheesh, Maroli ^{[1
]}

Deshpande, Rajendrakumar Dattatraya ^{[2
]}

机构：

[1] Ctr Water Resources Dev & Management, Isotope Hydrol Div, Kunnamangalam PO, Kozhikode 673571, India

[2] Phys Res Lab, Geosci Div, Ahmadabad 380009, Gujarat, India

来源：

ENVIRONMENTAL EARTH SCIENCES | 2016年 / 75卷 / 21期

关键词：

Water isotopes; Hydrometeorology; Isotope effects; Rainfall; Ground-level vapour; India; MONSOON PRECIPITATION; HYDROGEN ISOTOPES; NEW-DELHI; SALINITY; RAINFALL; DYNAMICS; OXYGEN; CYCLE;

D O I：

10.1007/s12665-016-6233-x

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The controlling factors of spatio-temporal variation in delta O-18 and delta D composition of rainwater and the rain-vapour interaction in the southern, middle and northern regions of Kerala, India, are presented. The isotopic distribution (delta O-18) of rainfall ranged between 0 and -6 parts per thousand during January to September and between -6 to -12 parts per thousand during October to December. The rain during post-monsoon season has significant contribution to recycled vapour. Evaporation from falling raindrops is significant despite high relative humidity. The sudden isotopic depletion of ground level vapour from baseline isotopic composition is due to interaction and isotopic exchange with falling raindrops.

引用

页数：12

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