Abstract
Research Article| December 01, 2009 DETERMINISTIC SEISMIC GROUND MOTION MODELLING OF THE GREATER ACCRA METROPOLITAN AREA, SOUTHEASTERN GHANA P.E. AMPONSAH; P.E. AMPONSAH Geological Survey Department, Accra, Ghana, e-mail: pekua2@yahoo.com Search for other works by this author on: GSW Google Scholar B.K. BANOENG-YAKUBO; B.K. BANOENG-YAKUBO Geology Department, University of Ghana, Legon, Ghana, e-mail: bbruce@ug.edu.gh Search for other works by this author on: GSW Google Scholar G.F. PANZA; G.F. PANZA Department of Earth Sciences, University of Trieste, Italy, The Abdus Salam International Centre for Theoretical Physics- ESP SAND group, Trieste, Italy, e-mail: panza@dst.units.it Search for other works by this author on: GSW Google Scholar F. VACCARI F. VACCARI Department of Earth Sciences, University of Trieste, Italy, e-mail: vaccari@dst.units.it Search for other works by this author on: GSW Google Scholar Author and Article Information P.E. AMPONSAH Geological Survey Department, Accra, Ghana, e-mail: pekua2@yahoo.com B.K. BANOENG-YAKUBO Geology Department, University of Ghana, Legon, Ghana, e-mail: bbruce@ug.edu.gh G.F. PANZA Department of Earth Sciences, University of Trieste, Italy, The Abdus Salam International Centre for Theoretical Physics- ESP SAND group, Trieste, Italy, e-mail: panza@dst.units.it F. VACCARI Department of Earth Sciences, University of Trieste, Italy, e-mail: vaccari@dst.units.it Publisher: Geological Society of South Africa First Online: 09 Mar 2017 Online ISSN: 1996-8590 Print ISSN: 1012-0750 © 2009 Geological Society of South Africa South African Journal of Geology (2009) 112 (3-4): 317–328. https://doi.org/10.2113/gssajg.112.3-4.317 Article history First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation P.E. AMPONSAH, B.K. BANOENG-YAKUBO, G.F. PANZA, F. VACCARI; DETERMINISTIC SEISMIC GROUND MOTION MODELLING OF THE GREATER ACCRA METROPOLITAN AREA, SOUTHEASTERN GHANA. South African Journal of Geology 2009;; 112 (3-4): 317–328. doi: https://doi.org/10.2113/gssajg.112.3-4.317 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 SocietySouth African Journal of Geology Search Advanced Search Abstract The seismic ground motion of the greater Accra Metropolitan Area has been modelled for land use planning and disaster mitigation. The deterministic computation, a hybrid method based on the modal summation and finite difference method was used. Using these techniques, the seismic ground motion along four profiles located in the metropolis has been computed. The 1939 earthquake of magnitude 6.5 (ML ) was used as the scenario earthquake. Synthetic seismic waveforms from which parameters for engineering design such as peak ground acceleration, velocity and spectral amplifications have been produced along the geological cross sections. The peak ground acceleration and velocity computed for the metropolis ranges from 0.14 g to 0.57 g and 9.2 cms−1 to 37.1 cms−1, respectively. These correspond to intensity ranging from VII to IX on the Modified Mercalli Intensity scale. Areas in the metropolis underlain by unconsolidated sediments experience the largest shakings. The results illustrated represent a useful guide for civil engineers in the design of buildings in the metropolis for safe and sustainable development. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.
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