Welcome to the official site of Hiramatsu Lab. since 1997


地殻不均質性・異方性  crustal heterogeneity and anisotropy

Hiramatsu, Y., T. Iidaka, and The Research Group for the Joint Seisic observations at the Nobi Area., Stress state in the upper crust around the source region of the 1891 Nobi earthquake through shear wave polarization anisotropy, Earth Planets Space, 67:52, doi:10.1186/s40623-015-0220-4, 2015.manuscript

Tsuji, S., Y. Hiramatsu, and the Japanese University Group of the Joint Seismic Observations at the Area of Nobi Earthquake, Spatial variation in coda Q around the Nobi fault zone, central Japan: relation to S-wave velocity and seismicity, Earth Planets Space, 66:97, doi:10.1186/1880-5981-66-97, 2014. manuscript

Hiramatsu, Y., A. Sawada, Y. Yamauchi, S. Ueyama, K. Nishigami, E. Kurashimo, and the Japanese University Group of the Joint Seismic Observations at NKTZ, Spatial variation in coda Q and stressing rate around the Atotsugawa fault zone in a high strain rate zone, central Japan, Earth Planets Space, 65, 115-119, 2013. pdf

Hiramatsu, Y., K. Iwatsuki, S. Ueyama, T. Iidaka, and the Japanese University Group of the Joint Seismic Observations at NKTZ, Spatial variation in shear wave splitting of the upper crust in the zone of inland high strain rate, central Japan, Earth Planets Space, 62, 675-684, 2010. pdf

Sugaya, K., Y. Hiramatsu, M. Furumoto and H. Katao, Coseismic change and recovery of scattering environment in the crust after the 1995 Hyogo-ken Nanbu earthquake, Japan, Bull. Seism. Soc. Am., 99, 435-440, 2009. pdf

Hiramatsu, Y., H. Honma, A. Saiga, M. Furumoto and T. Ooida, Seismological evidence on characteristic time of crack healing in the shallow crust, Geophys. Res. Lett., 32, 9, L09304, doi:10.1029/2005GL022657, 2005.  pdf

高橋直季、根岸弘明、平松良浩、白山火山周辺の三次元地震波速度構造、火山、第49巻、第6号、355-365、2004. abstract

Saiga, A., Y. Hiramatsu, T. Ooida and K. Yamaoka, Spatial variation in the crustal anisotropy and its temporal variation associated with the moderate size earthquake in the Tokai region, central Japan, Geophys. J. Int., 154, 695-705, 2003. abstract

荒川浩樹、平松良浩、片尾浩、丹波地域におけるb値の空間分布、京都大学防災研究所年報、第44号、263-271、2002. pdf

Hiramatsu, Y., N. Hayashi, M. Furumoto and H. Katao, Temporal changes in coda Q-1 and b-value due to the static stress change associated with the 1995 Hyogo-ken Nanbu earthquake, J. Geohys. Res., 105, 6141-6151, 2000. pdf


Hamada M., Y. Hiramatsu, M. Oda, H. Yamaguchi, Fossil tubeworms link coastal uplift of the northern Noto Peninsula to rupture of the Wajima-oki fault in AD 1729, Tectonophys., 670, 38-47, 2016. manuscript

Urano, S., Y. Hiramatsu, T. Yamada, and The Group for the Joint Aftershocks Observations of the 2007 Noto Hanto Earthquake, Relationship between coseismic slip and static stress drop of similar aftershocks of the 2007 Noto Hanto earthquake, Earth Planets Space, 67:101, doi:10.1186/s40623-015-0277-0, 2015. manuscript

Mizukami, T., H. Yokoyama, Y. Hiramatsu, S. Arai, H. Kawahara, T. Nagaya, and S.R. Wallis, Two types of antigorite serpentinite controlling heterogeneous slow-slip behaviours of slab-mantle interface, Earth Planet. Sci. Lett., 401, 148-158, 2014. manuscript

Hayashi, M., and Y. Hiramatsu, Spatial distribution of similar aftershocks of a large inland earthquake, the 2000 Western Tottori earthquake, in Japan, Earth Planets Space, 65, 1587-1592, 2013. pdf

Ishida, R., Y. Hiramatsu, T. Matsuzawa, and K. Obara, Average slip rate at the transition zone on the plate interface beneath the Kii Peninsula, Japan, estimated from deep low-frequency tremors, Earth Planets Space, 65, 1047-1051, 2013. pdf

Hiramatsu, Y., M. Hayashi, A. Hayashi, and the group for the joint aftershock observations of the 2007 Noto Hanto Earthquake, Relation between similar aftershocks and ruptured asperity of a large inland earthquake: Example of the 2007 Noto Hanto earthquake, Earth Planets Space , 63, 145-149, 2011. pdf

Hirose, T., Y. Hiramatsu, and K. Obara, Characteristics of short-term slow slip events estimated from deep low-frequency tremors in Shikoku, Japan, J. Geophys. Res., 115, B10304, doi:10.1029/2010JB007608, 2010. abstract

Hiramatsu, Y., K. Moriya, T. Kamiya, M. Kato and T. Nishimura, Fault model of the 2007 Noto Hanto earthquake estimated from coseismic deformation obtained by the distribution of littoral organisms and GPS: Implication for neotectonics in the northwestern Noto Peninsula, Earth Planets Space, 60, 903-913, 2008. pdf

Hiramatsu, Y., T. Watanabe and K. Obara, Deep low-frequency tremors as a proxy for slip monitoring at plate interface, Geophys. Res. Lett., 35, L13304, doi:10.1029/2008GL034342, 2008. abstract

Watanabe, T., Y. Hiramatsu, and K. Obara (2007), Scaling relationship between the duration and the amplitude of non-volcanic deep low-frequency tremors, Geophys. Res. Lett., 34, L07305, doi:10.1029/2007GL029391. abstract

Hiramatsu, Y. and M. Furumoto, Scaling relationship between sizes of nucleation regions and eventual sizes of earthquakes, Tectonophys., 443, 209-217, 2007. pdf

Hiramatsu, Y., M. Furumoto, K. Nishigami and S. Ohmi, Initial rupture process of microearthquakes recorded by high sampling borehole seismographs at the Nojima fault, central Japan, Phys. Earth Planet. Int., 132, 269-279, 2002. abstract & figs

Hiramatsu, Y., H. Yamanaka, K. Tadokoro, K. Nishigami, and S. Ohmi, Scaling law between corner frequency and seismic moment of microearthquakes: Is the breakdown of the cube law a nature of earthquakes?, Geophys. Res. Lett., 29 (8),10.1029/2001GL013849, 2002. pdf

Yamanaka, H., Y. Hiramatsu and H. Katao, Spatial distribution of atypical aftershocks of the 1995 Hyogo-ken Nanbu earthquake, Earth Planets Space, 54, 933-945, 2002. pdf

地球内部構造  seismic anisotropy

Iidaka, Y., Y. Hiramatsu, and The Research Group for the Joint Seismic Observations at the Nobi Area, Heterogeneous mantle anisotropy and fluid upwelling: Implication for generation of the 1891 Nobi earthquake, Earth Planets Space, 68, 164, doi: 10.1186/s40623-016-0540-z, 2016. manuscript

Terada, T., Y. Hiramatsu, and T. Mizukami, Shear wave anisotropy beneath the volcanic front in south Kyushu area, Japan: Development of C-type olivine CPO under H2O-rich conditions, J. Geophys. Res., 118, 4253-4264, doi:10.1002/jgrb.50300, 2013. abstract

Iidaka, T. and Y. Hiramatsu, and The Japanese University Group of the Joint Seismic Observations at NKTZ, Shear-wave splitting analysis of the upper mantle at the Niigata-Kobe Tectonic Zone with the data of the Joint Seismic Observations at NKTZ, Earth Planets Space, 61, 227-235, 2009. pdf

Usui, Y., Y. Hiramatsu, M. Furumoto and M. Kanao, Evidence of seismic anisotropy and a lower temperature condition in the D" layer beneath Pacific Antarctic Ridge in the Antarctic Ocean, Phys. Earth Planet. Int., 167, 205-216, 2008. abstract & figs

Usui, Y., M. Kanao, A. Kubo, Y. Hiramatsu and H. Negishi, Upper mantle anisotropy from teleseismic SKS splitting beneath Lutzow -Holm Bay region, East Antarctica, U. S. Geological Survey and The National Academies; USGS OF-2007-1047, Short Research Paper 013; doi:10.3133/of2007-1047.srp013, 2007. pdf

Usui, Y., Y. Hiramatsu, M. Furumoto and M. Kanao, Thick and anisotropic D" layer beneath Antarctic Ocean, Geophys. Res. Lett., Vol. 32, L13311, doi:10.1029/2005GL022622, 2005. pdf

Hiramatsu, Y., M. Ando, T. Tsukuda and T. Ooida, Three-dimensional image of the anisotropic bodies beneath central Honshu, Japan, Geophys. J. Int., 135, 801-816, 1998. abstract

Kubo, A.and Y. Hiramatsu, On presence of asthenospheric anisotropy beneath continent: significance of reference frame selection, Pure and Appl. Geophys.,151, 281-303, 1998.

Hiramatsu, Y., M. Ando and Y. Ishikawa, ScS wave splitting of deep earthquakes around Japan, Geophys. J. Int., 128, 409-425, 1997. abstract

Hiramatsu, Y. and M. Ando, Seismic anisotropy near source region in subduction zones around Japan, Phys. Earth Planet. Int., 95, 237-250, 1996. abstract & figs

地震活動・重力異常・活断層 seismicity, gravity anomaly, active fault

Wada, S., A. Sawada, Y. Hiramatsu, N. Matsumoto, S. Okada, T. Tanaka, R. Honda (2017) Continuity of subsurface fault structure revealed by gravity anomaly: the eastern boundary fault zone of the Niigata plain, central Japan, Earth Planets Space, 69:15 doi: 10.1186/s40623-017-0602-x.manuscript

Matsumoto, N., Y. Hiramatsu, A. Sawada, Continuity, segmentation and faulting type of active fault zones of the 2016 Kumamoto earthquake inferred from analyses of a gravity gradient tensor, Earth Planets Space, 68, 167, doi: 10.1186/s40623-016-0541-y, 2016. manuscript

平松良浩、小阪大、石川県部入道遺跡の噴砂痕の形成年代:森本・富樫断層帯の活動との関連、地震2、第65巻、3号、251-254、2013. pdf

Sawada, A., H. Bessyo, Y. Hiramatsu, Y. Kono, and M. Furumoto, Gravity Anomaly and Subsurface Structure in the Kaga Hot Springs Area, J. Balneol. Soc. Jpn., 62, 135-143, 2012.pdf

澤田明宏、平松良浩、水林 侑、浜田昌明、本多 亮、重力異常から見た能登半島北部地域の地塊構造、地震2、第64巻、4号、235-239、2012.pdf

本多亮, 澤田明宏, 古瀬慶博, 工藤健, 田中俊行, 平松良浩, 金沢大学重力データベースの公表, 測地学会誌, 第58巻, 153-160, 2012.pdf

Honda, R., Y. Hiramatsu, Y. Kono, H. Katagawa, Gravity anomalies and the geologic block structures in and around the aftershock area of the 2007 Noto Hanto Earthquake, Earth Planets Space, 60, 111-115, 2008. pdf

平松良浩、片川秀基、田中敬介、能登半島の微小地震活動と2007年能登半島地震:能登半島の地質構造形成との関連、地震研究所彙報、82、237-254、2007. pdf


本多亮、平松良浩、古本宗充、河野芳輝、重力異常の水平勾配と歪み集中帯の関係、地震2、第58巻,第3号、371-373、2005. pdf

高橋直季、三宅学、平松良浩、古本宗充、平田直、白山火山近傍での微小地震観測、地震2、56、89-94、2003. pdf


平松良浩、本多亮、河野芳輝、中新世カルデラ”美方コールドロン”で発生した兵庫県北部地震と中国地方の重力異常、月刊地球、号外、No 38、102-108、2002.

本多亮、平松良浩、河野芳輝、2000年鳥取県西部地震震源域の重力異常とそれから見た震源断層の特徴、地震2、55、83-88、2002. pdf

小林直樹、平松良浩、河野芳輝、竹内文朗、重力異常による福井平野の3次元基盤構造の推定−福井地震およびその周辺の活断層との関係−、地震2、54、1-8、2001. pdf


Sawada, N., T. Morota, S. Kato, Y. Ishihara, Y. Hiramatsu, Constraints on timing and magnitude of early global expansion of the Moon from topographic features in linear gravity anomaly areas, Geophys. Res. Lett., 43, 4865-4870, doi:10.1002/2016GL068966, 2016. abstract

Ishihara, Y., Y. Saruwatari, A. Sawada, T. Morota, Y. Hiramatsu, Quantitative measurement method for impact basin characteristics based on localized spherical harmonics, Icarus, 228, 315-323, 2014. html

Ishihara, Y. , Y. Hiramatsu, M.-Y. Yamamoto, M. Furumoto, K. Fujita, Infrasound/Seismic Observation of the Hayabusa Reentry: Observations and Preliminary Results, Earth Planets Space, 64, 655-660, 2012. pdf

Yamamoto, M.-Y., Y. Ishihara, Y. Hiramatsu, K. Kitamura, M. Ueda, Y. Shiba, M. Furumoto, K. Fujita, Detection of acoustic/infrasonic/seismic waves generated by hypersonic re-entry of the HAYABUSA capsule and fragmented parts of the spacecraft, PASJ, 63, 971-978, 2011.pdf

Fujita, K., M.-Y. Yamamoto, S. Abe, Y. Ishihara, O. Iiyama, Y. Kakinami, Y. Hiramatsu, M. Furumoto, M. Shoemaker, M. Ueda, Y. Shiba, M. Suzuki, An overview of JAXA's ground-observation activities for HAYABUSA reentry, PASJ, 63, 961-969, 2011.pdf

道中仁志、平松良浩、ALOS/PALSAR データの干渉解析による白山の地すべり変位の検出、測地学会誌、第56巻、第4号、179-194、2010.pdf

過疎・超高齢化地域での震災に関する総合的調査研究:金沢大学平成19年度能登半島地震学術調査報告書(能登半島の地形・地質構造と能登半島地震の断層運動)、金沢大学能登半島地震学術調査部会、2008. ダウンロードはこちらから

2007年能登半島地震被害調査報告書(1.1 地震の概要、1.2 地震のメカニズム)、土木学会・地盤工学会、2007. ダウンロードはこちらから


Ishihara, Y., S. Tsukada, S. Sakai, Y. Hiramatsu and M. Furumoto, The 1998 Miyako fireball's trajectory determined from shock wave records of a dense seismic array, Earth Planets Space, 55, e9-e12, 2003. pdf