Afterslip Behavior following the 2014 M 6.0 South Napa Earthquake with Implications for Afterslip Forecasting on Other Seismogenic Faults

Abstract

Research Article| March 23, 2016 Afterslip Behavior following the 2014 M 6.0 South Napa Earthquake with Implications for Afterslip Forecasting on Other Seismogenic Faults James J. Lienkaemper; James J. Lienkaemper aU.S. Geological Survey, MS 977, 345 Middlefield Road, Menlo Park, California 94025 U.S.A.jlienk@usgs.gov Search for other works by this author on: GSW Google Scholar Stephen B. DeLong; Stephen B. DeLong aU.S. Geological Survey, MS 977, 345 Middlefield Road, Menlo Park, California 94025 U.S.A.jlienk@usgs.gov Search for other works by this author on: GSW Google Scholar Carolyn J. Domrose; Carolyn J. Domrose bDepartment of Geosciences, San Francisco State University, 1600 Holloway Avenue, San Francisco, California 94132 U.S.A. Search for other works by this author on: GSW Google Scholar Carla M. Rosa Carla M. Rosa aU.S. Geological Survey, MS 977, 345 Middlefield Road, Menlo Park, California 94025 U.S.A.jlienk@usgs.gov Search for other works by this author on: GSW Google Scholar Author and Article Information James J. Lienkaemper aU.S. Geological Survey, MS 977, 345 Middlefield Road, Menlo Park, California 94025 U.S.A.jlienk@usgs.gov Stephen B. DeLong aU.S. Geological Survey, MS 977, 345 Middlefield Road, Menlo Park, California 94025 U.S.A.jlienk@usgs.gov Carolyn J. Domrose bDepartment of Geosciences, San Francisco State University, 1600 Holloway Avenue, San Francisco, California 94132 U.S.A. Carla M. Rosa aU.S. Geological Survey, MS 977, 345 Middlefield Road, Menlo Park, California 94025 U.S.A.jlienk@usgs.gov Publisher: Seismological Society of America First Online: 14 Jul 2017 Online Issn: 1938-2057 Print Issn: 0895-0695 © 2016 by the Seismological Society of America Seismological Research Letters (2016) 87 (3): 609–619. https://doi.org/10.1785/0220150262 Article history First Online: 14 Jul 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation James J. Lienkaemper, Stephen B. DeLong, Carolyn J. Domrose, Carla M. Rosa; Afterslip Behavior following the 2014 M 6.0 South Napa Earthquake with Implications for Afterslip Forecasting on Other Seismogenic Faults. Seismological Research Letters 2016;; 87 (3): 609–619. doi: https://doi.org/10.1785/0220150262 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 SocietySeismological Research Letters Search Advanced Search ABSTRACT The 24 August 2014 M 6.0 South Napa, California, earthquake exhibited unusually large slip for a California strike‐slip event of its size with a maximum coseismic surface slip of 40–50 cm in the north section of the 15‐km‐long rupture. Although only minor (<10 cm) surface slip occurred coseismically in the southern 9 km section of the rupture, considerable postseismic slip occurred, so that the maximum total slip one year after the event approached 40–50 cm, approximately equal to the coseismic maximum in the north. We measured the accumulation of postseismic surface slip on four ∼100‐m‐long alignment arrays for one year following the event. Because prolonged afterslip can delay reconstruction of fault‐damaged buildings and infrastructure, we analyzed its gradual decay to estimate when significant afterslip would likely end. This forecasting of Napa afterslip suggests how we might approach the scientific and engineering challenges of afterslip from a much larger M∼7 earthquake anticipated on the nearby urban Hayward fault. However, we expect its afterslip to last much longer than one year. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.