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Hiroyuki Goto (Nov. 12, 1980)

Associate Professor, Disaster Prevention Research Institute, Kyoto University (2015 - )

Assistant Professor, Disaster Prevention Research Institute, Kyoto University (2007 - 2014)


Academic member

SSA (Seismological Society of America)

JSCE (Japan Society of Civil Engineers)

SSJ (Seismological Society of Japan)

JGS (The Japanese Geotechnical Society)

JAEE (Japan Association for Earthquake Engineering)


Academic career

2006    Dr. Eng., Kyoto University (Civil Engineering)

2005    M.A. Engineering, Kyoto University (Civil Engineering)

2003    B.A. Engineering, Kyoto University (Civil Engineering)


Topics and Research fields: Earthquake Engineering

Normalized Energy Density; fundamental property and its application

Normalized Energy Density (NED) is an interesting conserved quantity defined on a multi-layered surface layers. The property enables us to create some efficient tools to handle a site amplification. I still tackle the remaining challenge tasks on NED.

- Hiroyuki Goto, Yuichi Kawamura, Sumio Sawada and Takashi Akazawa: Direct estimation of near-surface damping based on normalized energy density, Geophys. J. Int., in printing.

- Hiroyuki Goto, Sumio Sawada and Toshiyuki Hirai: Conserved quantity of elastic waves in multi-layered media: 2D SH case -Normalized Energy Density-, Wave Motion, Vol.48, No.7, pp.602-612, 2011.

→ more detailed lists in Publications


Accurate and efficient numerical simulation of spontaneous rupture propagation

Spontaneous rupture propagation of seismic fault is one of the challenging problem of accurate and efficient numerical simulations. Many kinds of method are proposed in order to improve the results. My research teams also apply them to understanding some features of the actual earthquake fault. I also contribute some of the idea to the rupture simulation in collaboration with Prof. Jacobo Bielak (CMU).

- Hiroyuki Goto, Yojiro Yamamoto and Saeko Kita: Dynamic rupture simulation of the 2011 off the Pacific coast of Tohoku earthquake: multi-event generation within dozens of seconds, Earth, Planets and Space, Vol.64, No.12, pp.1167-1175, 2012.

- Kazunori Wada and Hiroyuki Goto: Generation mechanism of surface and buried faults: Effect of plasticity in a shallow crust structure, Bull. Seism. Soc. Am., Vol.102, No.4, pp.1712-1728, 2012.

- Hiroyuki Goto, Leonardo Ramirez-Guzman and Jacobo Bielak: Simulation of spontaneous rupture based on a combined boundary integral equation method and finite element method approach: SH and P-SV cases, Geophys. J. Int., Vol.183, No.2, pp.975-1004, 2010.

- Hiroyuki Goto and Jacobo Bielak: Hybrid multidomain finite element and boundary element method for dynamic rupture in heterogeneous media, Workshop Earthquake Source Dynamics, 2010.

- Hiroyuki Goto, Leonardo Ramirez-Guzman and Jacobo Bielak: Simulation of spontaneous rupture based on a combined boundary integral equation method and finite element method approach, Workshop Earthquake Source Dynamics, 2010.

- Hiroyuki Goto and Jacobo Bielak: Galerkin boundary integral equation method for spontaneous rupture propagation problems: SH-case, Geophys. J. Int., Vol.172, pp.1083-1103, 2008.

- Hiroyuki Goto, Leonardo Ramirez-Guzman and Jacobo Bielak: Numerical simulation of dynamic fault rupture propagation based on a combination of BIEM and FEM solutions, 14th WCEE, 2008.

- Hiroyuki Goto and Jacobo Bielak: Galerkin boundary integral equation method for spontaneous rupture propagation problems, 2007 AGU Fall Meeting, 2007.

- Hiroyuki Goto, Leonardo Ramirez-Guzman, and Jacobo Bielak: A hybrid boundary integral equation and domain finite element method for dynamic rupture in heterogeneous media: antiplane case, 2005 AGU Fall Meeting, 2005.

→ more detailed lists in Publications


Dynamic source inversion and its limitation

Engineers are interested in source characteristics to predict a strong ground motion for a seismic design. Kinematic approach has characterized several source parameters, such as fault and asperity areas, etc. Dynamic approach may help to characterize more detail parameters on the fault. Another motivation is to model dynamic parameters required to simulate and predict a instantaneous rupture process. However, I investigated difficulties of the direct estimation because of the trade-offs among the parameters.

- Hiroyuki Goto and Sumio Sawada: Trade-offs among dynamic parameters inferred from results of dynamic source inversion, Bull. Seism. Soc. Am., Vol.100, pp.910-922, 2010.

- Hiroyuki Goto and Sumio Sawada: Trade-offs among dynamic parameters inferred from 2D dynamic source inversion results, 2010 AGU Fall Meeting, 2010.

- Hiroyuki Goto and Sumio Sawada: Dynamic source inversion based on stable formulation and on identification of the resolution level via a multi-scale approach, Geophys. J. Int., Vol.167, No. 2, pp.779-793, 2006.

- Hiroyuki Goto and Sumio Sawada: Sensitivity analysis of dynamic parameters based on dynamic source inversion problem, 2006 AGU Fall Meeting, 2006.

- Hiroyuki Goto and Sumio Sawada: Dynamic source inversion based on stable formulation, 1st ECEES, 2006.

- Hiroyuki Goto and Sumio Sawada: Dynamic source inversion analysis based on the formulation avoiding undesirable sensitivity, 4th KKN seminar, 2005.

→ more detailed lists in Publications


Estimation of subsurface structure and numerical simulation of strong ground motion

Underground physical geometries and geophysical parameters are remarkably interested in engineers for strong motion prediction. 1985 Mexico, 1995 Kobe, and 1999 Turkey Earthquake, especially, caused severe damages at specific areas by 3-D basin structures. Numerical simulations for 3-D seismic wave propagation and 3-D subsurface model help to investigate a basin effect, quantitatively.

- Hiroyuki Goto, Hitoshi Morikawa, Masayuki Inatani, Yumiko Ogura, Satoshi Tokue, Xin-Rui Zhang, Masahiro Iwasaki, Masayuki Araki, Sumio Sawada and Aspasia Zerva: Very dense seismic array observations in Furukawa district, Japan, Seismological Research Letters, Vol.83, No.5, pp.765-774, 2012.

- Hiroyuki Goto, Chika Takahashi, Yayoi Ishii, Su-Qun Ling, Ken Miyakoshi, Hitoshi Morikawa, Yoshiki Sato, Sumio Sawada, Yoshikazu Shingaki, Yuto Suzuki, Daisuke Takabatake and Masato Joshima: Deep subsurface structure estimated by microtremors array observations and gravity surveys in Kashiwazaki area, Japan, Soils and Foundations, Vol.49, pp.651-659, 2009.

- Nozomi Kobayashi, Hiroyuki Goto, Koji Yamada and Sumio Sawada: Shallow S-wave seismic reflection survey around the K-NET Anamizu site, Safety, Reliability and Risk of Structures, Infrastructures and Engineering Systems, pp.2933-2939, 2009.

- Hiroyuki Goto, Sumio Sawada, Hitoshi Morikawa, Hiroyoshi Kiku, and Serdar Ozalaybey: Modeling of 3-D subsurface structure and numerical simulation of strong ground motion in Adapazari basin during the 1999 Kocaeri Earthquake, Turkey, Bull. Seism. Soc. Am., Vol. 95, No. 6, pp.2197-2215, 2005.

- Hiroyuki Goto and Sumio Sawada: Numerical simulation of strong ground motion on Adapazari basin during the 1999 Kocaeri, Turkey, Earthquake, 17th KKCNN, 2004.

- Hiroyuki Goto and Sumio Sawada: Numerical simulation of strong ground motion on Adapazari basin during the 1999 Kocaeri Turkey Earthquake, 13th WCEE, 2004.

- Sumio Sawada, H. Goto, H. Morikawa and H. Kiku: Numerical simulation of strong ground motion around Adapazari basin during the 1999 Kocaeri Earthquake, Turkey, IUGG2003, 2003.

→ more detailed lists in Publications


Report on earthquake disaster

I have reported some of earthquake disasters occured in Japan. The reports are listed in Earthquake.



Place

Uji campus of Kyoto University, Uji city.


OS

Linux (Ubuntu) and MacBook Pro. 


Favorits

Tomato! & Coffee!

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Mail to : gotocatfish.dpri.kyoto-u.ac.jp (substitute 2byte @ to 1byte @)