Water-level fluctuations and earthquakes on the San Andreas fault zone

Research Article| August 01, 1975 Water-level fluctuations and earthquakes on the San Andreas fault zone Robert L. Kovach; Robert L. Kovach 1Department of Geophysics, Stanford University, Stanford, California 94305 Search for other works by this author on: GSW Google Scholar Amos Nur; Amos Nur 1Department of Geophysics, Stanford University, Stanford, California 94305 Search for other works by this author on: GSW Google Scholar Robert L. Wesson; Robert L. Wesson 2National Center for Earthquake Research, U.S. Geological Survey, Menlo Park, California 94025 Search for other works by this author on: GSW Google Scholar Russell Robinson Russell Robinson 2National Center for Earthquake Research, U.S. Geological Survey, Menlo Park, California 94025 Search for other works by this author on: GSW Google Scholar Author and Article Information Robert L. Kovach 1Department of Geophysics, Stanford University, Stanford, California 94305 Amos Nur 1Department of Geophysics, Stanford University, Stanford, California 94305 Robert L. Wesson 2National Center for Earthquake Research, U.S. Geological Survey, Menlo Park, California 94025 Russell Robinson 2National Center for Earthquake Research, U.S. Geological Survey, Menlo Park, California 94025 Publisher: Geological Society of America First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1975) 3 (8): 437–440. https://doi.org/10.1130/0091-7613(1975)3<437:WFAEOT>2.0.CO;2 Article history First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Robert L. Kovach, Amos Nur, Robert L. Wesson, Russell Robinson; Water-level fluctuations and earthquakes on the San Andreas fault zone. Geology 1975;; 3 (8): 437–440. doi: https://doi.org/10.1130/0091-7613(1975)3<437:WFAEOT>2.0.CO;2 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 SocietyGeology Search Advanced Search Abstract Observations of the water-level changes in a well drilled into the San Andreas fault zone have been under way since May 1971, with the objective of studying in situ pore-pressure changes in a zone of active tectonic creep and seismicity. Small water-level changes, characterized by a decrease and subsequent rise, have been followed by earthquakes of moderate size on the San Andreas fault zone. Compatibility of these observations with either a dilatancy-type behavior or a dislocation-type behavior for the pre-earthquake process can be demonstrated. Additional water-level observations at other sites in the fault zone are needed to examine the spatial and temporal extent of the actual preseismic process that is responsible for observed creep events, water-level changes, and tilt changes. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.