Zheng, G., Xu, S., Liang, S., Shi, P. and Zhao, J. (2013) Gas emission from the Qingzhu River after the 2008 Wenchuan Earthquake, Southwest China. Chemical Geology, 339, pp. 187-193. (doi: 10.1016/j.chemgeo.2012.10.032)
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Publisher's URL: http://dx.doi.org/10.1016/j.chemgeo.2012.10.032
Abstract
Four gas and six water samples were collected from the Qingzhu River in Qingchuan County, one of the regions affected by the 2008 Ms8.0 giant Wenchuan Earthquake. Gases were discharged soon after the earthquake, but such emissions ceased in October 2008. The predominant gases are CH<sub>4</sub>, CO<sub>2</sub>, N<sub>2</sub> and O<sub>2</sub>. The N<sub>2</sub>, O<sub>2</sub> and noble gases are of atmospheric origin. In contrast, the CH<sub>4</sub> and CO<sub>2</sub> have typical biogenic signatures, with high C<sub>1</sub>/(C<sub>2</sub> + C<sub>3</sub>), δ<sup>13</sup>C<sub>CH4</sub> (− 56.1 to − 56.6‰); δD<sub>CH4</sub> (− 328 to − 345‰); and δ<sup>13</sup>CCO2(− 6.7 to − 4.9‰). These measurements indicate that the gases are discharged from a shallow reservoir through faults or fractures caused by the earthquake. The discharging gases are significantly distinct from the natural gas fields nearby, suggesting that there are no direct pathways, such as faults or fractures, between the surface and the natural gas reservoir.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Xu, Dr Sheng |
| Authors: | Zheng, G., Xu, S., Liang, S., Shi, P., and Zhao, J. |
| College/School: | College of Science and Engineering > Scottish Universities Environmental Research Centre |
| Journal Name: | Chemical Geology |
| ISSN: | 0009-2541 |
| ISSN (Online): | 1872-6836 |
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