Portal de Periódicos da CAPES

Update of the Urban Seismic and Liquefaction Hazard Maps for Memphis and Shelby County, Tennessee: Liquefaction Probability Curves and 2015 Hazard Maps

2018; Seismological Society of America; Volume: 89; Issue: 2A Linguagem: Inglês

10.1785/0220170139

1938-2057

Chris H. Cramer, Mahesh Singh Dhar, David Arellano,

Seismic Performance and Analysis

Research Article| January 03, 2018 Update of the Urban Seismic and Liquefaction Hazard Maps for Memphis and Shelby County, Tennessee: Liquefaction Probability Curves and 2015 Hazard Maps Chris H. Cramer; Chris H. Cramer aCenter for Earthquake Research and Information, University of Memphis, 3890 Central Avenue, Memphis, Tennessee 38152‐3050 U.S.A., ccramer@memphis.edumsdhar@memphis.edu Search for other works by this author on: GSW Google Scholar Mahesh S. Dhar; Mahesh S. Dhar aCenter for Earthquake Research and Information, University of Memphis, 3890 Central Avenue, Memphis, Tennessee 38152‐3050 U.S.A., ccramer@memphis.edumsdhar@memphis.edu Search for other works by this author on: GSW Google Scholar David Arellano David Arellano bDepartment of Civil Engineering, University of Memphis, 104 Engineering Science Building, Memphis, Tennessee 38153‐3050 U.S.A., darellan@memphis.edu Search for other works by this author on: GSW Google Scholar Author and Article Information Chris H. Cramer aCenter for Earthquake Research and Information, University of Memphis, 3890 Central Avenue, Memphis, Tennessee 38152‐3050 U.S.A., ccramer@memphis.edumsdhar@memphis.edu Mahesh S. Dhar aCenter for Earthquake Research and Information, University of Memphis, 3890 Central Avenue, Memphis, Tennessee 38152‐3050 U.S.A., ccramer@memphis.edumsdhar@memphis.edu David Arellano bDepartment of Civil Engineering, University of Memphis, 104 Engineering Science Building, Memphis, Tennessee 38153‐3050 U.S.A., darellan@memphis.edu Publisher: Seismological Society of America First Online: 03 Jan 2018 Online Issn: 1938-2057 Print Issn: 0895-0695 © Seismological Society of America Seismological Research Letters (2018) 89 (2A): 688–701. https://doi.org/10.1785/0220170139 Article history First Online: 03 Jan 2018 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Chris H. Cramer, Mahesh S. Dhar, David Arellano; Update of the Urban Seismic and Liquefaction Hazard Maps for Memphis and Shelby County, Tennessee: Liquefaction Probability Curves and 2015 Hazard Maps. Seismological Research Letters 2018;; 89 (2A): 688–701. doi: https://doi.org/10.1785/0220170139 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 In 2012–2013, Memphis urban seismic hazard maps were updated and expanded to all of Shelby County, Tennessee, from the original six 7.5′ quadrangles in 2004. The 2013 revised Memphis urban seismic hazard maps used an updated 3D geologic model, which led to a significant increase in hazard. In 2014–2015, we revised the geotechnical aspects of the 2004 hazard maps and adopted the U.S. Geological Survey (USGS) National Seismic Hazard Mapping Project (NSHMP) 2014 hazard model. We generated revised probabilistic and scenario ground motion and liquefaction urban hazard maps for 12+ quadrangles covering Shelby Co. The resulting 2015 probabilistic Memphis urban hazard maps showed similar seismic hazard (within 10%) to the 2013 maps, but reduced seismic hazard for the scenario maps compared to the 2013 maps, due to decreased ground‐motion predictions by the 2014 NSHMP attenuation model. By including details about local geological, geotechnical, and geophysical conditions, the new seismic hazard maps tend to show lower peak ground acceleration (PGA) hazard compared to the B/C boundary 2014 USGS NSHMP, whereas the 1.0 s hazard is higher compared to the USGS 2014 maps. The 2004 liquefaction probability curves were revised using additional geotechnical boring information and updated water table information. Liquefaction hazard changes are mainly in the predictions for loess and alluvium, which show reductions and increases, respectively, from the 2004 equivalent hazard maps, due to improved modeling of liquefaction response from our 2014–2015 study. A public and professional outreach workshop was held 28 July 2015 to raise public, business, and professional awareness of Memphis area earthquake hazards and to disseminate the revised urban hazard maps produced in 2015. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.