Journal of the Meteorological Society of Japan. Ser. II
Online ISSN : 2186-9057
Print ISSN : 0026-1165
ISSN-L : 0026-1165
Isotope Studies of Precipitation, River Water and Groundwater in the HEIFE Area, Northwestern China
Makoto TaniguchiIchirow KaihotsuKazuo Kotoda
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1995 Volume 73 Issue 6 Pages 1293-1299

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Abstract

Stable isotopes (deuterium and oxygen-18) were used for determining the origin of water and interactions between groundwater and river water, and clarifying the relationship between groundwater salinity and changes in the isotopic components of groundwater in the HEIFE area, northwestern China. An indication that active mixing of groundwater and river water occurred from October to March, was recognized from seasonal changes in their isotopic components. The relationship between electrical conductivity and isotopic components of groundwater shows that there are two groups of sites. Groundwater in one group has the characteristic of increasing δD with increasing electrical conductivity (caused by evaporation), while the electrical conductivity of the groundwater in a second group does not change with changing isotope composition, and is identified as water of mountain origin.

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