Aftershocks, Earthquake Effects, and the Location of the Large 14 December 1872 Earthquake near Entiat, Central Washington

Research Article| December 19, 2017 Aftershocks, Earthquake Effects, and the Location of the Large 14 December 1872 Earthquake near Entiat, Central Washington Thomas M. Brocher; Thomas M. Brocher aEarthquake Science Center, U.S. Geological Survey, 345 Middlefield Road, MS 977, Menlo Park, California 94025, brocher@usgs.gov Search for other works by this author on: GSW Google Scholar Margaret G. Hopper; Margaret G. Hopper bU.S. Geological Survey, Branch of Earthquake and Landslide Hazards, Mail Stop 966, Box 25046, Denver Federal Center, Denver, Colorado 80225cRetired. Search for other works by this author on: GSW Google Scholar S. T. Ted Algermissen; S. T. Ted Algermissen bU.S. Geological Survey, Branch of Earthquake and Landslide Hazards, Mail Stop 966, Box 25046, Denver Federal Center, Denver, Colorado 80225dDeceased (14 September 2006). Search for other works by this author on: GSW Google Scholar David M. Perkins; David M. Perkins bU.S. Geological Survey, Branch of Earthquake and Landslide Hazards, Mail Stop 966, Box 25046, Denver Federal Center, Denver, Colorado 80225cRetired. Search for other works by this author on: GSW Google Scholar Stanley R. Brockman; Stanley R. Brockman bU.S. Geological Survey, Branch of Earthquake and Landslide Hazards, Mail Stop 966, Box 25046, Denver Federal Center, Denver, Colorado 80225eDeceased (17 June 2005). Search for other works by this author on: GSW Google Scholar Edouard P. Arnold Edouard P. Arnold bU.S. Geological Survey, Branch of Earthquake and Landslide Hazards, Mail Stop 966, Box 25046, Denver Federal Center, Denver, Colorado 80225fDeceased (15 July 2006). Search for other works by this author on: GSW Google Scholar Author and Article Information Thomas M. Brocher aEarthquake Science Center, U.S. Geological Survey, 345 Middlefield Road, MS 977, Menlo Park, California 94025, brocher@usgs.gov Margaret G. Hopper bU.S. Geological Survey, Branch of Earthquake and Landslide Hazards, Mail Stop 966, Box 25046, Denver Federal Center, Denver, Colorado 80225cRetired. S. T. Ted Algermissen bU.S. Geological Survey, Branch of Earthquake and Landslide Hazards, Mail Stop 966, Box 25046, Denver Federal Center, Denver, Colorado 80225dDeceased (14 September 2006). David M. Perkins bU.S. Geological Survey, Branch of Earthquake and Landslide Hazards, Mail Stop 966, Box 25046, Denver Federal Center, Denver, Colorado 80225cRetired. Stanley R. Brockman bU.S. Geological Survey, Branch of Earthquake and Landslide Hazards, Mail Stop 966, Box 25046, Denver Federal Center, Denver, Colorado 80225eDeceased (17 June 2005). Edouard P. Arnold bU.S. Geological Survey, Branch of Earthquake and Landslide Hazards, Mail Stop 966, Box 25046, Denver Federal Center, Denver, Colorado 80225fDeceased (15 July 2006). Publisher: Seismological Society of America First Online: 19 Dec 2017 Online Issn: 1943-3573 Print Issn: 0037-1106 © Seismological Society of America Bulletin of the Seismological Society of America (2018) 108 (1): 66–83. https://doi.org/10.1785/0120170224 Article history First Online: 19 Dec 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Thomas M. Brocher, Margaret G. Hopper, S. T. Ted Algermissen, David M. Perkins, Stanley R. Brockman, Edouard P. Arnold; Aftershocks, Earthquake Effects, and the Location of the Large 14 December 1872 Earthquake near Entiat, Central Washington. Bulletin of the Seismological Society of America 2017;; 108 (1): 66–83. doi: https://doi.org/10.1785/0120170224 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 Reported aftershock durations, earthquake effects, and other observations from the large 14 December 1872 earthquake in central Washington are consistent with an epicenter near Entiat, Washington. Aftershocks were reported for more than 3 months only near Entiat. Modal intensity data described in this article are consistent with an Entiat area epicenter, where the largest modified Mercalli intensities, VIII, were assigned between Lake Chelan and Wenatchee. Although ground failures and water effects were widespread, there is a concentration of these features along the Columbia River and its tributaries in the Entiat area. Assuming linear ray paths, misfits from 23 reports of the directions of horizontal shaking have a local minima at Entiat, assuming the reports are describing surface waves, but the region having comparable misfit is large. Broadband seismograms recorded for comparable ray paths provide insight into the reasons why possible S–P times estimated from felt reports at two locations are several seconds too small to be consistent with an Entiat area epicenter. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.