研究成果
最新の研究成果・引用状況については、以下の外部データベースも併せて参照してください。
論文 (Papers)
2017
- Okuwaki, R., & Y. Yagi: Rupture Process during the MW 8.1 2017 Chiapas Mexico Earthquake: Shallow Intraplate Normal Faulting by Slab Bending, Geophys. Res. Lett., 44, https://doi.org/10.1002/2017GL075956, 2017.
- Okuwaki, R., & Y. Yagi: Role of geometric barriers in irregular-rupture evolution during the 2008 Wenchuan earthquake, Geophys. J. Int., ggx502, https://doi.org/10.1093/gji/ggx502, 2017.
- Anca, O., B. Enescu, Y. Yagi, & J. Zhuang: Triggering and Decay Characteristics of Dynamically Activated Seismicity in Southwest Japan, Geophys. J. Int., ggx456, https://doi.org/10.1093/gji/ggx456, 2017.
- Hirano, S., & Y. Yagi: Dependence of seismic and radiated energy on shorter wavelength components, Geophys. J. Int., 209, 1585-1592, 2017.
- Yamaguchi, T., T. Ichimura, Y. Yagi, R. Agata, T. Hori, & M. Hori: Fast crustal deformation computing method for multiple computations accelerated by a graphics processing unit cluster, Geophys. J. Int., 209, 787-800, 2017.
- Abdel-aal, A.K. & Y. Yagi: Earthquake source characterization, moment tensor solutions, and stress field of small-moderate earthquakes occurred in the northern Red Sea Triple Junction, Geosciences Journal, 21, 235-251, 2017.
- Endo, S., A. Nakao, S. Hirano, & Y. Yagi: The 2013 Sea of Okhotsk deep earthquake: A complex rupture within the Ringwoodite stability zone, Earth Evolution Sciences, 11, 23–30, 2017.
2016
- Mai, M., et al. (28 authors including R. Okuwaki & Y. Yagi): The earthquake‐source inversion validation (SIV) project, Seism. Res. Lett., 87, 690-708, 2016.
- Abdel-aal, A.K., Y. Yagi, et al.: Implementation of integrated multi-channel analysis of surface waves and waveform inversion techniques for seismic hazard estimation, Arabian Journal of Geosciences, 9, 1-16, 2016.
- Miyakawa, A., et al.: Volcanic magma reservoir imaged as a low-density body beneath Aso volcano that terminated the 2016 Kumamoto earthquake rupture, Earth, Planets and Space, 68, 208, 2016.
- Enescu, B., K. Shimojo, A. Opris, & Y. Yagi: Remote triggering of seismicity at Japanese volcanoes following the 2016 M7.3 Kumamoto earthquake, Earth, Planets and Space, 68, 165, 2016.
- Yagi, Y., R. Okuwaki, B. Enescu, A. Kasahara, A. Miyakawa, & M. Otsubo: Rupture process of the 2016 Kumamoto earthquake in relation to the thermal structure around Aso volcano, Earth, Planets and Space, 68, 118, 2016.
- Kasahara, A., Y. Yagi, & B. Enescu: etas_solve: A Robust Program to Estimate the ETAS Model Parameters, Seism. Res. Lett., 87, 5, 1-7, 2016.
- Okuwaki, R., Y. Yagi, et al.: Rupture Process During the 2015 Illapel, Chile Earthquake: Zigzag-Along-Dip Rupture Episodes, Pure and Applied Geophysics, 173, 1011-1020, 2016.
- Meng, L., A. Zhang, & Y. Yagi: Improving back projection imaging with a novel physics-based aftershock calibration approach: A case study of the 2015 Gorkha earthquake, Geophys. Res. Lett., 43, 628–636, 2016.
2015
- Aránguiz, R., et al.: The 16 September 2015 Chile tsunami from the post-tsunami survey and numerical modeling perspectives, Pure and Applied Geophysics, 173, 333-348, 2015.
- Yagi, Y. & R. Okuwaki: Integrated seismic source model of the 2015 Gorkha, Nepal, earthquake, Geophys. Res. Lett., 42, 6229–6235, 2015.
- Yagi, Y., R. Okuwaki, B. Enescu, & Y. Fukahata: Unusual low-angle normal fault earthquakes after the 2011 Tohoku-oki megathrust earthquake, Earth, Planets and Space, 67, 100, 2015.
2010〜2014年度の論文
2014
- Okuwaki, R., Y. Yagi, & S. Hirano: Relationship between High-frequency Radiation and Asperity Ruptures, Revealed by Hybrid Back-projection with a Non-planar Fault Model, Scientific reports, 4, 7120, 2014.
- Yagi, Y., et al.: Rupture process of the 2014 Iquique Chile earthquake in relation with the foreshock activity, Geophys. Res. Lett., 41, 4201-4206, 2014.
- Funning, G. J., Y. Fukahata, Y. Yagi, & B. Parsons: A method for the joint inversion of geodetic and seismic waveform data using ABIC..., Geophys. J. Int., 196, 1564-1579, 2014.
- Fukahata, Y., Y. Yagi, & L. Rivera: Theoretical relationship between back-projection imaging and classical linear inverse solutions, Geophys. J. Int., 196, 552-559, 2014.
- Shimojo, K., B. Enescu, Y. Yagi, & T. Takeda: Fluid-driven seismicity activation in northern Nagano region after the 2011 M9.0 Tohoku-oki earthquake, Geophys. Res. Lett., 41, 7524–7531, 2014.
- 八木勇治: 震源過程インバージョンに用いるフィルターの影響, 地震2, 66, 147-149, 2014.
- 木下祐介, et al.: 東北地方太平洋沖地震とそれ以降の降雨による斜面崩壊..., 地形, 35(1), 25-39, 2014.
2013
- Mitsui, Y., & Y. Yagi, Y: An interpretation of tsunami earthquake based on a simple dynamic model: Failure of shallow megathrust earthquake, Geophys. Res. Lett., 40, 1523–1527, 2013.
2012
- Yagi, Y., A. Nakao, & A. Kasahara: Smooth and rapid slip near the Japan Trench during the 2011 Tohoku-oki earthquake..., Earth Planet. Sci. Lett., 355, 94-101, 2012.
- Yagi, Y., N. Nishimura, & A. Kasahara: Source process of the 12 May 2008 Wenchuan, China, earthquake determined by waveform inversion..., Earth, Planets and Space, 64, e13-e16, 2012.
- Fukahata, Y., Y. Yagi, & S. Miyazaki: Constraints on early stage rupture process of the 2011 Tohoku-oki earthquake from 1 Hz GPS data, Earth, Planets and Space, 64, 1093-1099, 2012.
- 深畑幸俊, 八木勇治, 三井雄太: 2011年東北地方太平洋沖地震による絶対歪みの解放..., 地質学雑誌, 118, 396-409, 2012.
2011
- Yagi, Y., & Y. Fukahata: Rupture process of the 2011 Tohoku-oki earthquake and absolute elastic strain release, Geophys. Res. Lett., 38, L19307, 1-5, 2011.
- Koketsua, K., et al.: A unified source model for the 2011 Tohoku earthquake, Earth Planet. Sci. Lett., 310, 480-487, 2011.
- Yagi, Y., & Y. Fukahata: Introduction of uncertainty of Green's function into waveform inversion..., Geophys. J. Int., 186, 711-720, 2011.
- Pulido N., Y. Yagi, H. Kumagai, & N. Nishimura: Rupture process and coseismic deformations of the 27 February 2010 Maule Earthquake, Chile, Earth, Planets and Space, 63, 955-959, 2011.
- Suzuki, M., & Y. Yagi: Depth dependence of rupture velocity in deep earthquakes, Geophys. Res. Lett., 38, L05308, 2011.
- Yagi, Y., & N. Nishimura: Moment tensor inversion of near source seismograms, Bulletin of IISEE, 45, 133-138, 2011.
- Kasahara, A., & Y. Yagi: Complex seismic source process of the 2010 Haiti earthquake..., Resources Environment and Life, 112-115, 2011.
- 八木勇治: 2011年東北地方太平洋沖地震の震源過程, 地震2, 64, 143-153, 2011.
2010
- Kostyuk, A.D., et al.: Deformation of the Earth's crust in the Northern Tien Shan according to the earthquake focal data and satellite geodesy, IZVESTIYA-PHYSICS OF THE SOLID EARTH, 46, 230-243, 2010.
1998〜2009年度の論文
2009〜2005
- 八木勇治: 震源過程解析手法の開発, 地震2, 61, S297-S307, 2009.
- Yagi, Y., & Y. Fukahata: Importance of covariance components in inversion analyses..., Geophys. J. Int., 175, 215-221, 2008.
- Rodriguez-Lozoya, H.E., et al.: Rupture process of four medium-sized earthquakes that occurred in the Gulf of California, J. Geophys. Res., 113, B10301, 2008.
- 柳沼直, et al.: 近地・遠地地震波形インヴァージョンによる2005年宮城県沖の地震(M7.2)の地震時すべり量分布..., 地震2, 60, 43-53, 2007.
- Parsons, T., R.S. Yeats, Y. Yagi, & A. Hussain: Static stress change from the 2005 Kashmir earthquake, Geophys. Res. Lett., 33, L06304, 2006.
- Yaginuma T., et al.: Coseismic slip distribution of the 2005 off Miyagi earthquake (M7.2)..., Earth, Planets and Space, 58, 1549-1554, 2006.
- Matsubara, M., Y. Yagi, & K. Obara: Plate boundary slip associated with the 2003 Off-Tokachi earthquake..., Geophys. Res. Lett., 32, L08316, 2005.
- Yasuda, T., Y. Yagi, T. Mikumo, & T. Miyatake: A comparison between Dc’-values obtained from a dynamic rupture model and waveform inversion, Geophys. Res. Lett., 32, L14316, 2005.
2004〜1998
- Miyatake, T., Y. Yagi, & T. Yasuda: The dynamic rupture process of the 2001 Geiyo, Japan, earthquake, Geophys. Res. Lett., 31, L12612, 2004.
- Yagi, Y., et al.: Source rupture process of the Tecoman, Colima, Mexico earthquake of January 22, 2003..., Bull. Seism. Soc. Am., 94, 1795-1807, 2004.
- Yagi, Y.: Source rupture process of the 2003 Tokachi-oki earthquake..., Earth, Planet and Space, 56, 311-316, 2004.
- Mikumo, T., & Y. Yagi: Slip-weakening distance in dynamic rupture..., Geophys. J. Int., 155, 443-445, 2003.
- Yagi, Y., M. Kikuchi, & T. Nishimura: Co-seismic slip, post-seismic slip, and largest aftershock associated with the 1994 Sanriku-haruka-oki earthquake, Geophys. Res. Lett., 30, 2177, 2003.
- Yagi, Y., & M. Kikuchi: Partitioning between seismogenic and aseismic slip as highlighted from slow slip events in Hyuga-nada, Geophys. Res. Lett., 30, 1087, 2003.
- Mikumo, T., et al.: Stress-breakdown time and slip-weakening distance inferred from slip-velocity functions on earthquake faults, Bull. Seism. Soc. Am., 93, 264-282, 2003.
- Mikumo, T., Y. Yagi, S.K. Singh, & M.A. Santoyo: Coseismic and postseismic stress changes in a subducting plate..., J. Geophys. Res., 107, 2002.
- Yagi, Y., M. Kikuchi, & T. Sagiya: Co-seismic slip, post-seismic slip, and aftershocks associated with two large earthquakes in 1996 in Hyuga-nada, Earth, Planets and Space, 53, 793-803, 2001.
- Yagi, Y., & M. Kikuchi: Source rupture process of the Kocaeli, Turkey, earthquake of August 17, 1999..., Geophys. Res. Lett., 27, 1969–1972, 2000.
- Yagi, Y., M. Kikuchi, S. Yoshida, & T. Sagiya: Comparison of the coseismic rupture with the aftershock distribution in the Hyuga-nada Earthquakes of 1996, Geophys. Res. Lett., 26, 3161–3164, 1999.
- 八木勇治, 菊地正幸, 吉田真吾, 山中佳子: 1968年4月1日, 日向灘地震（M7.5）の震源過程..., 地震2 , 51, 139-148, 1998.
著書 (Books)
- 八木勇治、大澤義明（編）: 巨大地震による複合災害, 筑波大学出版会, 2015.
- 八木勇治: 地震の基礎知識と西アジアの地震活動, 西アジア文明学への招待, 悠書館, 60〜70頁, 2014.
- 指田勝男, et al.（編）: 地球学シリーズ２ 地球進化学, 古今書院, 2007.
高校地学関係
- 新編 地学基礎, 数研出版, 2017.
- フォトサイエンス地学図録, 数研出版, 2016.
- もういちど読む数研の高校地学, 数研出版, 2014.
- 地学教授資料 / 地学, 数研出版, 2013.
- 八木勇治: リアルタイムで地震を知る, 視覚でとらえるフォトサイエンス物理図録, 数研出版, 2012.
- 地学基礎教授資料 / 地学基礎, 数研出版, 2011.
その他・抜粋 (Other Publications)
- 八木勇治: 2016年熊本で発生した一連の地震活動, サイエンスネット, 57, 6-9, 2016.
- 八木勇治: 超々深い場所で起きた超巨大地震のふしぎ, 理科の探求2015冬号, 18, 76-81, 2015.
- Sagiya, T., H. Kanamori, Y. Yagi, M. Yamada, & J. Mori: Rebuilding seismology, Nature, 473(7346), 146-148, 2011.
- 八木勇治: 東北地方太平洋沖地震「地震波形から見た震源像」, パリティ, 26 , 28-33, 2011.
- 八木勇治: 地震のホヘト シリーズ (全10回), 日本地震学会広報紙「なゐふる」, 2006-2010.
- 八木勇治: スマトラ沖巨大地震の震源像, サイスモ / 地質と調査, 2005.