2013/05/01 by Y. Yamazaki, Yusuke Yamazaki, K. F. Cheung +3
Earth and Planetary Sciences · #earthquake and tectonic studies #Seismic Waves and Analysis #High-pressure geophysics and materials
paper · doi:10.1785/0120120103
Research Article| May 01, 2013 Modeling of the 2011 Tohoku Near‐Field Tsunami from Finite‐Fault Inversion of Seismic Waves Yoshiki Yamazaki; Yoshiki Yamazaki Department of Ocean and Resources Engineering, University of Hawaii at Manoa, Honolulu, Hawaii 96822 Search for other works by this author on: GSW Google Scholar Kwok Fai Cheung; Kwok Fai Cheung Department of Ocean and Resources Engineering, University of Hawaii at Manoa, Honolulu, Hawaii 96822 Search for other works by this author on: GSW Google Scholar Thorne Lay Thorne Lay Department of Earth and Planetary Sciences, University of California Santa Cruz, Santa Cruz, California 95064 Search for other works by this author on: GSW Google Scholar Author and Article Information Yoshiki Yamazaki Department of Ocean and Resources Engineering, University of Hawaii at Manoa, Honolulu, Hawaii 96822 Kwok Fai Cheung Department of Ocean and Resources Engineering, University of Hawaii at Manoa, Honolulu, Hawaii 96822 Thorne Lay Department of Earth and Planetary Sciences, University of California Santa Cruz, Santa Cruz, California 95064 Publisher: Seismological Society of America First Online: 14 Jul 2017 Online ISSN: 1943-3573 Print ISSN: 0037-1106 Bulletin of the Seismological Society of America (2013) 103 (2B): 1444–1455. https://doi.org/10.1785/0120120103 Article history First Online: 14 Jul 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Yoshiki Yamazaki, Kwok Fai Cheung, Thorne Lay; Modeling of the 2011 Tohoku Near‐Field Tsunami from Finite‐Fault Inversion of Seismic Waves. Bulletin of the Seismological Society of America 2013;; 103 (2B): 1444–1455. doi: https://doi.org/10.1785/0120120103 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 The great 2011 Tohoku earthquake with Mw 9.0 generated strong shaking and a destructive tsunami along the northeastern Japan coasts. We utilize a finite‐fault model obtained from seismic P‐wave inversion to characterize the time‐dependent fault displacements and seafloor motions. A nonhydrostatic long‐wave model describes the resulting tsunami for investigation of the generation mechanism in terms of the rupture process and the ocean wave dynamics over the continental margin. The computed near‐field tsunami, which evolves from two dominant wave components generated by seafloor uplift near the epicenter and trench, is consistent with the recorded water‐level data around the source. Spectral analysis of the computed ocean surface elevation reveals energetic, standing edge waves with periods 32–115 min along the continental margin from Chiba to Hokkaido. While superposition of the two dominant wave components exacerbates the impact along the coasts fronting the rupture, constructive interference of standing edge waves accounts for the belated arrivals of the largest waves on the adjacent coasts and persistent wave activities in the aftermath. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.