Yagi Yuji

J-GLOBAL         Last updated: Jul 9, 2019 at 02:41
 
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Name
Yagi Yuji
Affiliation
University of Tsukuba
Section
Faculty of Life and Environmental Sciences
Job title
Professor

Research Areas

 
 

Academic & Professional Experience

 
Apr 2018
   
 
Professor, Faculty of Life and Environmental Sciences, University of Tsukuba
 
Oct 2011
 - 
Mar 2018
Associate Professor, Faculty of Life and Environmental Sciences, University of Tsukuba
 

Awards & Honors

 
2015
Best Faculty Member, University of Tsukuba, University of Tsukuba
 
May 2009
Young Scientist Award (The Seismological Society of Japan), The Seismological Society of Japan
 
Nov 2004
The Earth, Planets and Space Young Researcher Award
 

Published Papers

 
Okuwaki, Ryo;Kasahara, Amato;Yagi, Yuji;Hirano, Shiro;Fukahata, Yukitoshi
Geophysical Journal International   216(3) 1529-1537   Nov 2018   [Refereed]
Waveform backprojection (BP) is a key technique of earthquake-source imaging, which has been widely used for extracting information of earthquake source evolution that cannot be obtained by kinematic source inversion. The technique enjoys consider...
Aranguiz, Rafael;Urra, Luisa;Okuwaki, Ryo;Yagi, Yuji
NATURAL HAZARDS AND EARTH SYSTEM SCIENCES   18(8) 2143-2160   Aug 2018   [Refereed]
Tamaribuchi, Koji;Yagi, Yuji;Enescu, Bogdan;Hirano, Shiro
Earth, Planets and Space   70    May 2018   [Refereed]
We investigated the foreshock activity characteristics using the Japan Meteorological Agency Unified Earthquake Catalog for the last 20 years. Using the nearest-neighbor distance approach, we systematically and objectively classified the earthquak...
Okuwaki, Ryo;Yagi, Yuji
GEOPHYSICAL JOURNAL INTERNATIONAL   212(3) 1657-1664   Nov 2017   [Refereed]
Geometric discontinuities within fault systems known as geometric barriers contribute to irregular rupture evolutions during earthquakes. We applied a hybrid backprojection method to high-frequency teleseismic P-waveforms to investigate the role o...
Okuwaki, Ryo;Yagi, Yuji
Geophysical Research Letters   44(23) 11816-11823   Nov 2017   [Refereed]
A seismic source model for the M-w 8.1 2017 Chiapas, Mexico, earthquake was constructed by kinematic waveform inversion using globally observed teleseismic waveforms, suggesting that the earthquake was a normal-faulting event on a steeply dipping ...

Books etc

 
巨大地震による複合災害―発生メカニズム・被害・都市や地域の復興
八木勇治;大澤義明 (Part:Editor)
筑波大学出版会   Nov 2015   ISBN:4904074386
西アジア文明学への招待
八木勇治 (Part:Contributor, 地震の基礎知識と西アジアの地震活動)
悠書館   2014   
地球進化学
指田勝男;久田, 健一郎;角替, 敏昭;八木, 勇治;小室, 光世;興野, 純 (Part:Editor)
Apr 2007   ISBN:9784772252041
新編 地学基礎 (地基/309)
家正則;岩森光;遠藤一佳;小川勇二郎;関井隆;高橋正樹;中村尚;成瀬元;八木勇治;吉田二美;磯村恭朗;小林則彦;武田康男;田中浩紀;林美幸
数研出版   2017   
地学図録
家正則;石橋隆;磯村恭朗;井上貞行;岩森光;遠藤一佳;小泉治彦;小林則彦;清水久芳;下林典正;関井隆;高橋正樹;武田康男;田中浩紀;對比地孝亘;中村尚;成瀬元;林美幸;八木勇治;安田真也;吉田二美
数研出版   Jun 2016   ISBN:9784410290923

Conference Activities & Talks

 
Contrasting patterns of rainfall-induced and earthquake-induced shallow landslides in granitic mountains, northern Ibaraki Prefecture, Japan
Hattanji, Tsuyoshi;Akihiko, Kawai;Matsushima, Takashi;Yagi, Yuji
日本地球惑星科学連合2018年大会   23 May 2018   日本地球惑星科学連合
Demonstration of improved seismic source inversion method of tele-seismic body wave
Yagi, Yuji;Okuwaki, Ryo
The 2017 AGU Fall Meeting   11 Dec 2017   American Geophysical Union
Seismic rupture inversion of tele-seismic body wave has been widely applied to studies of large earthquakes. In general, tele-seismic body wave contains information of overall rupture process of large earthquake, while the tele-seismic body wave i...
Flexible kinematic earthquake rupture inversion of tele-seismic waveforms: Application to the 2013 Balochistan, Pakistan earthquake
Shimizu, Kyusuke;Yagi, Yuji;Okuwaki, Ryo;Kasahara, Amato
The 2017 AGU Fall Meeting   11 Dec 2017   American Geophysical Union
The kinematic earthquake rupture models are useful to derive statistics and scaling properties of the large and great earthquakes. However, the kinematic rupture models for the same earthquake are often different from one another. Such sensitivity...
Potency backprojection
Okuwaki, Ryo;Kasahara, Amato;Yagi, Yuji
The 2017 AGU Fall Meeting   11 Dec 2017   American Geophysical Union
The backprojection (BP) method has been one of the powerful tools of tracking seismic-wave sources of the large/mega earthquakes. The BP method projects waveforms onto a possible source point by stacking them with the theoretical-travel-time shift...
A Bayesian hierarchical model for a seismic source inversion
Kasahara, Amato;Yagi, Yuji
IAG-IASPEI   30 Jul 2017   IAG-IASPEI
A source inversion analysis using spatio-temporal displacement field data is able to be formulated as a discrete linear inverse problem when the Green function and the source fault are known. However, it is difficult to calculate an accurate Green...

Research Grants & Projects

 
Development of simultaneous estimation method of fault geometry and slip distribution of large earthquake
Japan Society of for the Promotion of Science: Grant-in-Aid for Scientific Research(C)
Project Year: Apr 2019 - Mar 2022    Investigator(s): Yuji Yagi

Others

 
Apr 2017
Progress in Earth and Planetary Science: Editor
Jul 2015
Scientific Reports: Edition Board Member