Preliminary Early Report on the 33km SE of Ofunato, Japan tsunami
Laboratory of Remote Sensing and Geoinformatics for Disaster Management,
International Research Institute of Disaster Science, Tohoku University

Introduction

On 05/12/2015 21:12:58 a Mw 6.8 magnitude earthquake occurred.

Preliminary Tsunami simulation results

Updated at Wed May 13 07:40:58 2015

  • Initial conditions

    • Latitude: 38.90 deg
    Longitude: 142.03 deg
    Focal Depth: 38.86 (km)
    Estimated Magnitude: 6.8
    Parameters for simulation. Estimated from Papazachos(2004)
    Length: 35.48 (km)
    Width: 30.06 (km)
    Slip: 0.37 (m)
    The star shows the location of the epicenter. Click on the image to enlarge.

  • Propagation simulation

    • Tsunami numerical modeling is performed by using linear shalllow water theory on cartesian coordinates with bathymetry/topography grid data of 30 arc-sec from GEBCO.

    Governing Equation : Linear Shallow Water Equations
    Numerical Scheme : Leap-frog Finite Difference Method
    Spatial Grid Size : 30 arc-sec

    Tsunami propagation

  • Maximum inundation heights

    • Click on the image to enlarge

  • Near Sea Level Stations:

    Name
    Hakodate
    Kuji
    HAKO
    DART21348
    Oarai
    Ayukawa
    Sendai-Shiogama_Port
    Kashima
    Ishinomaki
    Hachinohe_Port
    Miyako
    Soma
    Shimokita
    DART21346
    Ofunato
    Kamaishi
    DART21347
    Mutsu-Ogawara
    Choshi_Port
    Onahama

    News related to the event

    CNN
    BBC

    References

  • Mw 6.8 - 33km SE of Ofunato, Japan (USGS Earthquake Hazards Program)

    • Contact (Laboratory of Remote Sensing and Geoinformatics for Disaster Management)

  • Erick Mas, Assistant Professor (mas@irides.tohoku.ac.jp)
  • Bruno Adriano, Ph.D. student (adriano@geoinfo.civil.tohoku.ac.jp)
  • Shunichi Koshimura, Professor (koshimura@irides.tohoku.ac.jp)

    • Other useful links

  • International Research Institute of Disaster Science, Tohoku University (IRIDeS)
  • Pacific Tsunami Warning Center (PTWC)