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Hydrological linkages between different water resources from two contrasting ecosystems of western peninsular India: a stable isotope perspective
Isotopes in Environmental and Health Studies ( IF 1.3 ) Pub Date : 2019-09-23 , DOI: 10.1080/10256016.2019.1666121 Kushank Bajaj 1, 2 , Renie Thomas 2, 3 , Ankita Yadav 2 , Amey Datye 1 , Supriyo Chakraborty 1, 4
Isotopes in Environmental and Health Studies ( IF 1.3 ) Pub Date : 2019-09-23 , DOI: 10.1080/10256016.2019.1666121 Kushank Bajaj 1, 2 , Renie Thomas 2, 3 , Ankita Yadav 2 , Amey Datye 1 , Supriyo Chakraborty 1, 4
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ABSTRACT Water scarcity is a leading concern in both developing and developed nations. Coping with water scarcity requires an understanding of various hydrological processes that act upon precipitation, surface and groundwater at a local scale. We measured isotopic signatures of several water samples from two distinct ecosystems, i.e. tropical savanna in the West and the warm semi-arid region in the East lying across the Western Ghats mountain range, India, to understand the hydrological processes. The results show that the hydrogeological conditions strongly influence the isotopic characteristics of water of different resources, governed by different hydrological processes, even at close spatial scales. Based on the local evaporation lines of different water resources within a particular ecosystem, it is inferred that the water resources are well linked at one site, but have diverse connectivity at the other site. Further, the isotopic signatures of all the water resources are systematically affected by the monsoon precipitation. In addition, anomalously depleted isotopic signatures are observed during known hailstorm events. This may provide a means to trace their signature in the existing water resources.
更新日期：2019-09-23
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