|
|||||
|
|
Spatial-temporal Variations of H2 Concentration in Soil Gas in the Seismic Fault Zone Produced by the Wenchuan MS 8.0 Earthquake |
|
| Authors: | Zhou Xiaocheng Shi Hongyu Chen Chao Zeng Linghua Sun Fengxia Li Jing Chen Zhi Lü Chaojia Huang Dan Du Jianguo |
| Institution: | 1.Key Laboratory of Earthquake Prediction, Institute of Earthquake Science, China Earthquake Administration, Beijing 100036, China; 2.Kangding Seismic Station, Sichuan Earthquake Administration,Sichuan Kangding 626000, China; 3.Institute of Disaster Prevention, Hebei Langfang 065201, China |
| Abstract: | Degassing of Hydrogen (H2) from fault may be a good indicator of fault activity. The concentration of H2 in soil gas in the seismic surface rupture zone produced by the Wenchuan MS 8.0 earthquake was investigated in twenty three measuring regions in order to explore the relationship between the spatio-temporal variations of H2 concentration in soil gas along the seismic rupture zone and the vertical displacements and aftershocks activities. The results indicated: ① the sources of H2 were directly related to from the release of natural gas reservoirs; ②the average concentration of H2 in soil gas spatially decreased from Yingxiu to Nanba; ③the magnitudes of the H2 concentration anomalies declined significantly with time. It is very significant to study the variation tendency of atmospheric environment with further research of degassing of H2 from faults. |
| Keywords: | Hydrogen Soil gas Wenchuan MS 8 0 earthquake Rupture zone |
| 点击此处可从《地球科学进展》浏览原始摘要信息 | |
| 点击此处可从《地球科学进展》下载免费的PDF全文 | |