A Detailed Insight into Fluid Infiltration in the Three Gorges Reservoir Area, China, from 3D VP, VP/VS, QP, and QS Tomography

Research Article| July 03, 2018 A Detailed Insight into Fluid Infiltration in the Three Gorges Reservoir Area, China, from 3D VP⁠, VP/VS⁠, QP⁠, and QS Tomography Lianqing Zhou; Lianqing Zhou aInstitute of Earthquake Forecasting, China Earthquake Administration, Mailbox 166, No. 63, Fuxing Avenue, Beijing 100036, China, zhoulq@cea-ies.ac.cnzhaocp@cea-ies.ac.cn Search for other works by this author on: GSW Google Scholar Cuiping Zhao; Cuiping Zhao aInstitute of Earthquake Forecasting, China Earthquake Administration, Mailbox 166, No. 63, Fuxing Avenue, Beijing 100036, China, zhoulq@cea-ies.ac.cnzhaocp@cea-ies.ac.cn Search for other works by this author on: GSW Google Scholar Jun Luo; Jun Luo aInstitute of Earthquake Forecasting, China Earthquake Administration, Mailbox 166, No. 63, Fuxing Avenue, Beijing 100036, China, zhoulq@cea-ies.ac.cnzhaocp@cea-ies.ac.cn Search for other works by this author on: GSW Google Scholar Zhangli Chen Zhangli Chen bChina Earthquake Administration, Mailbox 166, No. 63, Fuxing Avenue, Beijing 100036, China Search for other works by this author on: GSW Google Scholar Author and Article Information Lianqing Zhou aInstitute of Earthquake Forecasting, China Earthquake Administration, Mailbox 166, No. 63, Fuxing Avenue, Beijing 100036, China, zhoulq@cea-ies.ac.cnzhaocp@cea-ies.ac.cn Cuiping Zhao aInstitute of Earthquake Forecasting, China Earthquake Administration, Mailbox 166, No. 63, Fuxing Avenue, Beijing 100036, China, zhoulq@cea-ies.ac.cnzhaocp@cea-ies.ac.cn Jun Luo aInstitute of Earthquake Forecasting, China Earthquake Administration, Mailbox 166, No. 63, Fuxing Avenue, Beijing 100036, China, zhoulq@cea-ies.ac.cnzhaocp@cea-ies.ac.cn Zhangli Chen bChina Earthquake Administration, Mailbox 166, No. 63, Fuxing Avenue, Beijing 100036, China Publisher: Seismological Society of America First Online: 03 Jul 2018 Online Issn: 1943-3573 Print Issn: 0037-1106 © Seismological Society of America Bulletin of the Seismological Society of America (2018) 108 (5B): 3029–3045. https://doi.org/10.1785/0120170361 Article history First Online: 03 Jul 2018 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Lianqing Zhou, Cuiping Zhao, Jun Luo, Zhangli Chen; A Detailed Insight into Fluid Infiltration in the Three Gorges Reservoir Area, China, from 3D VP⁠, VP/VS⁠, QP⁠, and QS Tomography. Bulletin of the Seismological Society of America 2018;; 108 (5B): 3029–3045. doi: https://doi.org/10.1785/0120170361 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyBulletin of the Seismological Society of America Search Advanced Search Abstract Combination of velocity, Poisson's ratio, and attenuation structure is a powerful tool to investigate the characteristics of media, and it is especially useful to infer the lithology, porosity, water content of rocks, fluid infiltration depth, and distribution in the reservoir area. Using data from 4967 earthquakes recorded by a high‐density seismic network, we carried out high‐resolution 3D VP⁠, VP/VS⁠, QP⁠, and QS tomography research in the Three Gorges Reservoir area of China, where the world's largest high‐capacity hydroelectric power station is located. We found two regions with significantly low VP⁠, high VP/VS⁠, and low QP and QS⁠; one is the region between the Shuitianba fault and the western edge of the Huangling dome, and the other is the Badong region on the upstream Yangtze River, where more than 2000 earthquakes occurred in four months after the reservoir was first impounded. We infer that there is significant fluid infiltration in the two regions. The interior area of the Zigui basin is shown as a low‐VP region at depths of 0–6 km, which is consistent with the depth to crystalline basement. The Three Gorges dam area is a region with moderately high VP⁠, low VP/VS⁠, and prominently high QP and QS⁠, demonstrating no obvious water infiltration around the dam area. Combining present results with previous studies, we draw a conclusion that the distance away from main rivers, lithologies, and the presence of faults are the main factors contributing to the fluid infiltration distribution beneath the reservoir region. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.