Great earthquakes and great asperities, San Andreas fault, southern California

Research Article| December 01, 1985 Great earthquakes and great asperities, San Andreas fault, southern California Lynn R. Sykes; Lynn R. Sykes 1Lamont-Doherty Geological Observatory, Palisades, New York 10964 and Department of Geological Sciences, Columbia University Search for other works by this author on: GSW Google Scholar Leonardo Seeber Leonardo Seeber 2Lamont-Doherty Geological Observatory, Palisades, New York 10964 Search for other works by this author on: GSW Google Scholar Author and Article Information Lynn R. Sykes 1Lamont-Doherty Geological Observatory, Palisades, New York 10964 and Department of Geological Sciences, Columbia University Leonardo Seeber 2Lamont-Doherty Geological Observatory, Palisades, New York 10964 Publisher: Geological Society of America First Online: 01 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (1985) 13 (12): 835–838. https://doi.org/10.1130/0091-7613(1985)13<835:GEAGAS>2.0.CO;2 Article history First Online: 01 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Lynn R. Sykes, Leonardo Seeber; Great earthquakes and great asperities, San Andreas fault, southern California. Geology 1985;; 13 (12): 835–838. doi: https://doi.org/10.1130/0091-7613(1985)13<835:GEAGAS>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 The big bend region of the southern San Andreas fault consists of two great asperities that rupture infrequently in great earthquakes. The eastern knot near San Gorgonio Pass, which has not ruptured historically in a large event, is the main locus of plate motion, appears to break in great events every few hundred years, and is more advanced in the cycle of strain accumulation than the western knot. The large size of these asperities results in the properties of these earthquakes being nearly invariant over many cycles of great shocks. An unusual sequence of moderate-size shocks within the eastern knot from 1940 to 1948 is an example of the type of precursory phenomenon that might precede a large earthquake. 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.