Welcome To My Home Page: Tatsuhiko Hara

Self introduction

Name: Tatsuhiko Hara
Research field: Seismology
Position: Chief Research Scientist
e-mail: thara@kenken.go.jp
Education: Ph.D. in Science,
University of Tokyo
Research Subject: Determination of the Earth's deep structure and earthquake source parameters

Analyses of recent large and/or disastrous earthquakes

     - Determination of earthquake magnitudes using duration of high-frequency energy radiation and maximum displacement amplitudes

·         April 6, 2010 Northern Sumatra Earthquake

·         February 27, 2010 Chile Earthquake

·         September 30, 2009 Southern Sumatra Earthquake

·         September 29, 2009 Samoa Islands Earthquake

·         May 12, 2008 Eastern Sichuan, China Earthquake

·         November 14, 2007 Antofagasta, Chile Earthquake

·         August 15, 2007 Near the coast of Central Peru Earthquake

·         April 1, 2007 Solomon Islands Earthquake

·         January 13, 2007 East of the Kuril Islands Earthquake

·         November 15, 2006 Kuril Islands earthquake

·         July 17, 2006 Java Tsunami earthquake

     - SE Off Kii Peninsula Earthquakes of September 5, 2004   Change of source mechanism inferred from long period body wave data

     - Previous earthquakes

Recent Publications

  • Hara, T. and Nishimura, N., 2011. Numerical experiments to investigate the accuracy of broad-band moment magnitude, Mwp, Geophys. J. Int., doi: 10.1111/j.1365-246X.2011.05211.x [Abstract].
  • Hara, T., 2011. Magnitude determination using duration of high frequency energy radiation and displacement amplitude: application to the 2011 offthe Pacific coast of Tohoku Earthquake, Earth Planets Space, 63, 525-528, doi:10.5047/eps.2011.05.014 [Abstract, Open access PDF].
  • Hara, T., 2008. Temporal characteristics of high band-pass filtered teleseismic P-waveforms from large shallow earthquakes, Earth Planets Space, 60, 781–784 [Abstract].
  • Hara, T., 2007. Measurement of duration of high-frequency energy radiation and its application to determination of magnitudes of large shallow earthquakes, Earth Planets Space, 59, 227–231 [Abstract].
  • Hara, T., 2007. Magnitude determination using duration of high frequency energy radiation and displacement amplitude: application to tsunami earthquakes, Earth Planets Space, 59, 561–565 [Abstract]. [Errata: 2009, 61, 803-804]
  • Œ΄@’C•F, 2005. ’n‹…‚Μ’nkŠw“I\‘’, ’nŠwŽGŽ, 114, 323-337.
  • Hara, T., 2005. Change of the source mechanism of the main shock of the 2004 off the Kii peninsula earthquakes inferred from long period body wave data, Earth Planets Space, 57, 179-183 [Abstract].
  • Hara, T., 2004. Waveform inversion for 3-D earth structure using the direct solution method implemented on vector-parallel supercomputer, Phys. Earth planet. Inter., 146, 65-74 [Abstract].
  • Hara, T., 2004. Determination of temporal distribution of moment release using long period body wave data: The case of the 2003 Tokachi-Oki earthquake, Earth Planets Space, 56, 307-310 [Abstract].
  • Œ΄@’C•F, 2003. ’n‹…ƒVƒ~ƒ…ƒŒ[ƒ^‚Ε”`‚­’n‹…‚Μ“ΰ•”, “ϊ–{˜f―‰ΘŠw‰οŽu—VE―Elv, 12, 159-164.
  • Geller R. J. and Hara, T., 2003. Geophysical aspects of very long baseline neutrino experiments, Nuclear Instruments and methods in Physics Research A, 503, 187-191 [Abstract].
  • Hara T. and Geller R. J., 2000. Simultaneous waveform inversion for 3-D Earth structure and earthquake source parameters considering a wide range of modal coupling, Geophys. J. Int., 142, 539-550 [Abstract].


Subjects of lectures:

    Annual course (Seismology and Tsunami)

  • Computer (with Dr. Fujii)
  • Data Processing (with Dr. Yokoi)
  • Practice of Theory of Seismic Waves 
  • Determination of Broadband Moment Magnitude

    Global Seismological Observation course 

  • Installation of Linux and SAC
  • Data Processing (with Dr. Shibazaki)


Individual studies that I supervised (Title, Participant, Training period):

  • Rayleigh Wave Phase Velocities obtained using Data from the Malaysian National Seismic Network, Atifah binti Mohd Alwi (from Malaysia), 2010-2011.
  • Focal Mechanism Determination of Local Earthquakes in Malay Peninsula, Siti Norbaizura binti Mat Said (from Malaysia), 2010-2011.
  • Focal Mechanism Determination using Waveform Data from a Broadband Station in the Philippines, Vilma C. Hernandez (from Philippines), 2010-2011.
  • Magnitude Determination using Acceleration Records from the Indonesian Strong Motion Network, Wijayanto (from Indonesia), 2009-2010.
  • Determination of Crustal Structure beneath a Broadband Station in Malaysia using Receiver Function Analysis, Zahratul Ain Din (from Malaysia), 2009-2010.
  • Earthquake Source Parameters for Subduction Zone Events Causing Tsunamis in and around the Philippines, Joan Cruz Salcedo (from Philippines), 2009-2010.
  • Estimation of High Frequency Energy Radiation (HFER) of the 2003 Tokachi-oki@Earthquake using Empirical Greenfs Functions, Wang Dun (from China), 2008-2009.
  • Receiver Function Analysis for Crustal Structure beneath Pakistan, Riaz Ahmed Soomro (from Pakistan), 2008-2009.
  • Travel Time Residuals from the New and Old Seismic Networks of Pakistan and Preliminary Hypocenter Determination, Nasir Mahmood (from Pakistan), 2007-2008.
  • Moment Tensor and hypocenter Determination using Waveform Data from the New Bangladesh Seismic Network, Sayeed Ahmed Choudhury (from Bangladesh), 2007-2008.
  • Determination of Earthquake Parameters using Single Station Broadband Data in Sri Lanka, S. W. M. Seneviratne (from Sri Lanka), 2007-2008 (as a co-supervisor with Dr. Yasuhiro Yoshida).
  • Evaluation of Current Status of the University Seismic Network in Sri Lanka and Proposal of its Upgrade, Thaldena Sanjeevani Nilmini Bandara (from Sri Lanka), 2006-2007.
  • Application of Time-domain Moment Tensor Inversion to Waveform data from the New Saudi Arabia Broadband Seismic Network, Majed Matar Al-Mutairi (from Saudi Arabia), 2006-2007.
  • Receiver Function Analysis for Crust Structure beneath Mongolia, Adiya Munkhsaikhan (from Mongolia), 2005-2006.
  • Relocation of the September 8 2002, Wewak Earthquake and its aftershocks and determination of Mwp for some earthquakes in and around Papua New Guinea, Mathew Moihoi (from Papua New Guinea), 2004-2005.
  • Determination of broadband moment magnitude for earthquakes in and around Philippines and preparation for its application to the newly installed broadband seismic network in the Philillines, Joan C. Salcedo (from Philillines), 2003-2004.
  • Determination of broadband moment magnitude (Mwp) of earthquakes in and around Pakistan and installation practice of required software, Ameer Hyder (from Pakistan), 2003-2004.
  • Moment tensor inversion for the June 29, 2001 earthquake in the western arm of the east African rift valley, Geraldine Paula Babirye (from Uganda), 2002-2003.
  • Seismological data analysis using El Salvador seismic network data, Calderon Oscar (from El Salvador), 2002-2003.
  • Preliminary Determination of Seismic Velocity Structure for Uganda, Isaiah Tumwikirize (from Uganda), 2001-2002.
  • Determination of magnitudes using Short-Period P-Wave Amplitude Data from Nepalese Seismic Network, Bharat Prasad Koirala (from Nepal), 2000-2001.
  • The Focal Mechanism of Micro-Earthquake near the Yangsan-Faults in Korea, Kim, Hoan-Seung (from Korea), 1999-2000.
  • Estimation of Earthquake Source Parameters from Waveform Data by Centroid Moment Tensor Inversion, Panuganti Solomon Raju (from India), 1997-1998.

Last Update: November 2, 2011