Tsunami-generated turbidity current of the 2011 Tohoku-Oki earthquake

Abstract

Research Article| November 01, 2013 Tsunami-generated turbidity current of the 2011 Tohoku-Oki earthquake Kazuno Arai; Kazuno Arai 1Department of Earth Sciences, Graduate School of Science, Chiba University, 1-33 Yayoicho, Inage-ku, Chiba 263-8522, Japan Search for other works by this author on: GSW Google Scholar Hajime Naruse; Hajime Naruse 2Division of Earth and Planetary Sciences, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan Search for other works by this author on: GSW Google Scholar Ryo Miura; Ryo Miura 3Nippon Marine Enterprises, Ltd., 14-1 Ogawa-cho, Yokosuka, Kanagawa 238-0004, Japan Search for other works by this author on: GSW Google Scholar Kiichiro Kawamura; Kiichiro Kawamura 4Graduate School of Science and Engineering, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, Yamaguchi 753-8512, Japan Search for other works by this author on: GSW Google Scholar Ryota Hino; Ryota Hino 5Research Center for Prediction of Earthquakes and Volcanic Eruptions, Graduate School of Science, Tohoku University, 6-6 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan Search for other works by this author on: GSW Google Scholar Yoshihiro Ito; Yoshihiro Ito 5Research Center for Prediction of Earthquakes and Volcanic Eruptions, Graduate School of Science, Tohoku University, 6-6 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan Search for other works by this author on: GSW Google Scholar Daisuke Inazu; Daisuke Inazu 6National Research Institute for Earth Science and Disaster Prevention, 3-1 Tennodai, Tsukuba, Ibaraki 305-0006, Japan Search for other works by this author on: GSW Google Scholar Miwa Yokokawa; Miwa Yokokawa 7Faculty of Information Science and Technology, Osaka Institute of Technology, 1-79-1 Kitayama, Hirakata, Osaka 576-0196, Japan Search for other works by this author on: GSW Google Scholar Norihiro Izumi; Norihiro Izumi 8Department of Civil Engineering, Hokkaido University, Nishi 8, Kita 13, Kita-ku, Sapporo, Hokkaido 060-8628, Japan Search for other works by this author on: GSW Google Scholar Masafumi Murayama; Masafumi Murayama 9Center for Advanced Marine Core Research, Kochi University, B200 Monobe, Nankoku, Kochi 783-8502, Japan Search for other works by this author on: GSW Google Scholar Takafumi Kasaya Takafumi Kasaya 10Institute for Research on Earth Evolution (IFREE), Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 2-15 Natsushima-cho, Yokosuka, Kanagawa 237-0061, Japan Search for other works by this author on: GSW Google Scholar Geology (2013) 41 (11): 1195–1198. https://doi.org/10.1130/G34777.1 Article history received: 28 May 2013 rev-recd: 01 Aug 2013 accepted: 02 Aug 2013 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 Kazuno Arai, Hajime Naruse, Ryo Miura, Kiichiro Kawamura, Ryota Hino, Yoshihiro Ito, Daisuke Inazu, Miwa Yokokawa, Norihiro Izumi, Masafumi Murayama, Takafumi Kasaya; Tsunami-generated turbidity current of the 2011 Tohoku-Oki earthquake. Geology 2013;; 41 (11): 1195–1198. doi: https://doi.org/10.1130/G34777.1 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 SocietyGeology Search Advanced Search Abstract We show the first real-time record of a turbidity current associated with a great earthquake, the Mw 9.0, 2011 Tohoku-Oki event offshore Japan. Turbidity current deposits (turbidites) have been used to estimate earthquake recurrence intervals from geologic records. Until now, however, there has been no direct evidence for large-scale earthquakes in subduction plate margins. After the 2011 Tohoku-Oki earthquake and tsunami, an anomalous event on the seafloor consistent with a turbidity current was recorded by ocean-bottom pressure recorders and seismometers deployed off Sendai, Japan. Freshly emplaced turbidites were collected from a wide area of seafloor off the Tohoku coastal region. We analyzed these measurements and sedimentary records to determine conditions of the modern tsunamigenic turbidity current. We anticipate our discovery to be a starting point for more detailed characterization of modern tsunamigenic turbidites, and for the identification of tsunamigenic turbidites in geologic records. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.