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The Scientific World Journal
Volume 2014, Article ID 901432, 13 pages
http://dx.doi.org/10.1155/2014/901432
Research Article

Hydrochemistry of the Hot Springs in Western Sichuan Province Related to the Wenchuan 8.0 Earthquake

1School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026, China
2CEA Key Laboratory of Earthquake Prediction (Institute of Earthquake Science), China Earthquake Administration, Beijing 100036, China

Received 1 January 2014; Accepted 5 February 2014; Published 5 May 2014

Academic Editors: J. Glodny, P. C. McGuire, and L. Tosi

Copyright © 2014 Zhi Chen et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Hydrogeochemistry of 32 hot springs in the western Sichuan Province after the Wenchuan 8.0 earthquake was investigated by analyzing the concentrations of cation and anion and the isotopic compositions of hydrogen and oxygen. The water samples of the hot springs were collected four times from June 2008 to April 2010. Hydrogeochemical data indicated the water samples can be classified into 9 chemical types. Values of δD and δ18O indicated that the spring waters were mainly derived from meteoric precipitation and affected by water-rock interaction and mixture of deep fluids. Concentrations of K+ and of the samples from the Kangding district exhibited evident increases before the Wenchuan earthquake, indicating more supplement of deep fluids under the increase of tectonic stress. The chemical and isotopic variations of the water samples from the area closer to the epicenter area can be attributed to variation of regional stress field when the aftershock activities became weak.