Clustering of offsets on the Haiyuan fault and their relationship to paleoearthquakes

Research Article| January 01, 2016 Clustering of offsets on the Haiyuan fault and their relationship to paleoearthquakes Zhikun Ren; Zhikun Ren † 1State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing 100029, China †E-mail: rzk@ies.ac.cn; Lzkren@gmail.com Search for other works by this author on: GSW Google Scholar Zhuqi Zhang; Zhuqi Zhang 1State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing 100029, China Search for other works by this author on: GSW Google Scholar Tao Chen; Tao Chen 2National Earthquake Infrastructure Service, China Earthquake Administration, Beijing 100036, China Search for other works by this author on: GSW Google Scholar Shouliang Yan; Shouliang Yan 1State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing 100029, China3School of Geophysics and Information Technology, China University of Geosciences (Beijing), Beijing 100083, China Search for other works by this author on: GSW Google Scholar Jinhui Yin; Jinhui Yin 1State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing 100029, China Search for other works by this author on: GSW Google Scholar Peizhen Zhang; Peizhen Zhang 1State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing 100029, China Search for other works by this author on: GSW Google Scholar Wenjun Zheng; Wenjun Zheng 1State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing 100029, China Search for other works by this author on: GSW Google Scholar Huiping Zhang; Huiping Zhang 1State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing 100029, China Search for other works by this author on: GSW Google Scholar Chuanyou Li Chuanyou Li 1State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing 100029, China Search for other works by this author on: GSW Google Scholar GSA Bulletin (2016) 128 (1-2): 3–18. https://doi.org/10.1130/B31155.1 Article history received: 23 Jun 2014 rev-recd: 30 Mar 2015 accepted: 20 May 2015 first online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Zhikun Ren, Zhuqi Zhang, Tao Chen, Shouliang Yan, Jinhui Yin, Peizhen Zhang, Wenjun Zheng, Huiping Zhang, Chuanyou Li; Clustering of offsets on the Haiyuan fault and their relationship to paleoearthquakes. GSA Bulletin 2016;; 128 (1-2): 3–18. doi: https://doi.org/10.1130/B31155.1 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 SocietyGSA Bulletin Search Advanced Search Abstract We used airborne light detection and ranging (LiDAR) data to reevaluate the single-event offsets of the 1920 Haiyuan Ms 8.5 earthquake and the cumulative offsets along the western and middle segments of the coseismic surface rupture zone. Our LiDAR data indicate that the offset observations along both the western and middle segments fall into groups. The group with the minimum slip amount is associated with the 1920 Haiyuan Ms 8.5 earthquake, which ruptured both the western and middle segments. Our research highlights two new interpretations: First, the previously reported maximum displacement of the 1920 earthquake was likely due to at least two earthquakes; second, our results reveal that the cumulative offset probability density (COPD) peaks of the same offset amounts on the western and middle segments do not correspond to one another one-to-one. We suggest that any discussion of the rupture pattern of a certain fault based on the offset data should also consider fault segmentation and paleoseismological data. Therefore, the COPD peaks should be computed and analyzed on fault subsections and not entire fault zones to study the number of paleoearthquakes and their rupture patterns. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.