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Crustal Deformation Research Division

Research Works and Results


Researchers (FY2017)

  • YARAI Hiroshi : Director of Crustal Deformation Research Division
  • OZAWA Shinzaburo : Chief Researcher
  • SUITO Hisashi : Chief Researcher
  • KOBAYASHI Tomokazu : Chief Researcher
  • MORISHITA Yu : Chief Researcher


Research Projects

  • Study on crustal deformation incorporating effect of topography and crustal structure
    (2016-2019) [Proposal [PDF: 2.57MB]
  • Study on spatially detailed detection of temporal variation in ground surface displacement by InSAR time series analysis
    (2014-2018) [Proposal [PDF: 2.17MB]


Recent Achievements

FY2017 New!!

(Peer-reviewed)
  • Morishita, Y., T. Kobayashi, S. Fujiwara, and H. Yarai (2017), Complex crustal deformation of the 2016 Kaikoura, New Zealand, earthquake revealed by ALOS‐2, Bull. Seismol. Soc. Am., in press, doi:10.1785/0120170143. [html]
  • Fujiwara, S., Y. Morishita, T. Nakano, T. Kobayashi, and H. Yarai (2017), Non-tectonic liquefaction-induced large surface displacements in the Aso Valley, Japan, caused by the 2016 Kumamoto earthquake, revealed by ALOS-2 SAR, Earth Planet. Sci. Lett., 474, 457-465, doi:10.1016/j.epsl.2017.07.001. [html]
  • Suito, H. (2017), Viscoelastic Relaxation Caused by the 2004 off the Kii Peninsula Earthquake, Zishin 2 (J. Seismol. Soc. Jpn.)70, 135-145. (in Japanese with English abstract)
  • Fujiwara, S., M. Murakami, T. Nishimura, M. Tobita, H. Yarai, and T. Kobayashi (2017), Volcanic deformation of Atosanupuri volcanic complex in the Kussharo caldera, Japan, from 1993 to 2016 revealed by JERS-1, ALOS, and ALOS-2 radar interferometry, Earth Planets Space, 69: 78, doi:10.1186/s40623-017-0662-y. [html] [PDF: 4.48MB]

FY2016

(Peer-reviewed)
  • Suito, H. (2017), Importance of rheological heterogeneity for interpreting viscoelastic relaxation caused by the 2011 Tohoku-Oki eathquake, Earth Planets Space, 69: 21, doi:10.1186/s40623-017-0611-9. [html] [PDF: 5.80MB]
  • Kobayashi, T. (2017), Earthquake rupture properties of the 2016 Kumamoto earthquake foreshocks (Mj 6.5 and Mj 6.4) revealed by conventional and multiple-aperture InSAR, Earth Planets Space, 69: 7, doi:10.1186/s40623-016-0594-y. [html] [PDF: 5.85MB]
  • Suito, H. (2016), Detectability of Interplate Fault Slip around Japan, Based on GEONET Daily Solution F3, J. Geod. Soc. Jpn.62, 109-120. (in Japanese with English abstract) [html]
  • Kobayashi, T. (2016), Effect of atmospheric-related noise reduction using numerical weather model for InSAR analysis ― Application to the 2015 Sakurajima dike intrusion event ―, J. Geod. Soc. Jpn.62, 79-88. (in Japanese with English abstract) [html]
  • Morishita, Y.  (2016), Reduction of spatially long wavelength noises in SAR interferograms using GNSS data, J. Geod. Soc. Jpn.62, 89-100. (in Japanese with English abstract) [html]
  • Fujiwara, S., H. Yarai, T. Kobayashi, Y. Morishita, T. Nakano, B. Miyahara, H. Nakai, Y. Miura, H. Ueshiba, Y. Kakiage and H. Une (2016), Small-displacement linear surface ruptures of the 2016 Kumamoto earthquake sequence detected by ALOS-2 SAR interferometry, Earth Planets Space, 68: 160, doi:10.1186/s40623-016-0534-x. [html] [PDF: 7.30MB]
  • Ozawa, S., M. Tobita, and H. Yarai (2016), A possible restart of an interplate slow slip adjacent to the Tokai seismic gap in Japan, Earth Planets Space, 68: 54, doi:10.1186/s40623-016-0430-4. [html] [PDF: 6.42MB]
  • Morishita, Y., T. Kobayashi, and H. Yarai (2016), Three-dimensional deformation mapping of a dike intrusion event in Sakurajima in 2015 by exploiting the right- and left-looking ALOS-2 InSAR, Geophys. Res. Lett., 43, doi:10.1002/2016GL068293. [html]


FY2015

(Peer-reviewed)
  • Morishita, Y.  (2015), Comparison of PSI results between L- and C-band SAR data, J. Geod. Soc. Jpn.61, 157-166. (in Japanese with English abstract) [html]
  • Kobayashi, T., Y. Morishita, and H. Yarai (2015), Detailed crustal deformation and fault rupture of the 2015 Gorkha earthquake, Nepal, revealed from ScanSAR-based interferograms of ALOS-2, Earth Planets Space, 67:201, doi:10.1186/s40623-015-0359-z. [html] [PDF: 4.51MB]
  • Tobita M., H. Suito, T. Kobayashi, S. Kawamoto, M. Yamanaka, A. Suzuki, T. Enya, M. Honda, T. Imakiire, A. Luis, A. Pelicano, T. Bacolcol, and T. Ohkura (2015), Continuous GPS Observations in Mindanao, Journal of Disaster Research, 10, 67-73. [html]
  • Morishita, Y., and R.F. Hanssen (2015), Deformation parameter estimation in low coherence areas using a multisatellite InSAR approach, IEEE Trans. Geosci. Remote Sens., 53, 4275-4283, doi:10.1109/TGRS.2015.2394394. [html]


FY2014

(Peer-reviewed)
  • Morishita, Y., and R.F. Hanssen (2015), Temporal decorrelation in L-, C-, and X-band satellite radar interferometry for pasture on drained peat soils, IEEE Trans. Geosci. Remote Sens., 53, 1096-1104, doi:10.1109/TGRS.2014.2333814. [html]
  • Kobayashi, T. (2014), Remarkable ground uplift and reverse fault ruptures for the 2013 Bohol earthquake (Mw 7.1), Philippines, revealed by SAR pixel offset analysis, Geosci. Lett., 1:7, doi:10.1186/2196-4092-1-7. [html] [PDF: 1.81MB]
(Non-peer-reviewed)
  • Kobayashi, T., M. Ishimoto, M. Tobita, and H. Yarai (2014), A tool for reduction of atmosphere-related noises included in an InSAR image, incorporating a numerical weather model, Journal of Geospatial Information Authority of Japan, 125, 31-38. (in Japanese) [PDF: 1.77MB]


FY2013

(Peer-reviewed)
  • Yarai, H., and S. Ozawa(2013), Quasi‐periodic slow slip events in the afterslip area of the 1996 Hyuga‐nada earthquakes, Japan, J. Geophys. Res., 118, 2512-2527. [html] [PDF: 6.99MB]
  • Nishimura,T.,T.Matsuzawa, K. Obara (2013), Detection of short-term slow slip events along the Nankai trough, southwest Japan using GNSS data, J. Geophys. Res., 118,3112-3125.[html] [PDF: 12.22MB]
  • Ozawa, S., H. Yarai, T. Imakiire, and M. Tobita (2013), Spatial and temporal evolution of the long-term slow slip in the Bungo Channel, Japan, Earth Planets Space, 65, 67-73, doi:10.5047/eps.2012.06.009. [PDF: 3.82MB]
  • Kobayashi, T., (2013), The 2011 Tohoku earthquake and the related disasters observed by InSAR using ALOS/PALSAR: Mainshock, induced inland earthquakes, and Liquefaction, 2013 APSAR proceedings, 540-543. [html]
(Non-peer-reviewed)
  • Nishimura, T., and Hotaka Dake Survey Team (2013), Geodetic examination of uplift in the Hotaka peaks, northern Japan Alps ~GNSS observation at the 1st order triangulation point "Hodakadake"~, Journal of Geospatial Information Authority of Japan, 124, 117-123. (in Japanese) [PDF: 1.82MB]


FY2012

(Peer-reviewed)
  • Kobayashi, T., M. Tobita, M. Koarai, T. Okatani, A. Suzuki, Y. Noguchi, M. Yamanaka, and B. Miyahara, InSAR-derived crustal deformation and fault models of normal faulting earthquake (Mj7.0) in Fukushima-Hamadori area, Earth Planet Space64, 1209-1221, doi:10.5047/eps.2012.08.015. [PDF: 11.30MB]
  • Kobayashi, T., T. Ohminato, Y. Ida, and E. Fujita (2012) Intermittent Inflations Recorded by Broadband Seismometers Prior to Caldera Formation at Miyake-jima Volcano in 2000, Earth Planet. Sci. Lett., 357-358,145-151, doi:10.1016/j.epsl.2012.09.039. [html] 
  • Suito, H., T. Nishimura, T. Kobayashi, S. Ozawa, M. Tobita and T. Imakiire, Co- and post- seismic deformation and fault model of the 2011 off the Pacific coast of Tohoku Earthquake, Zishin 2 (J. Seismol. Soc. Jpn.),  65,95-121, doi:10.4294/zisin.65.95.(in Japanese with English abstract)
  • Ozawa, S., T. Nishimura, H. Munekane, H. Suito, T. Kobayashi, M. Tobita, and T. Imakiire (2012), Preceding, coseismic, and postseismic slips of the 2011 Tohoku earthquake, Japan, J. Geophys. Res., B07404, doi:10.1029/2011JB009120. [html] [PDF: 5.04MB]
  • Nishimura, T., H. Suito, T. Kobayashi, and M. Tobita (2012), Crustal deformation in and around the Echigo Plain clarified by geodetic observation across the Niigata-Kobe Tectonic zone, Zishin 2 (J. Seismol. Soc. Jpn.)64, 211-222. (in Japanese with English abstract)
  • Nishimrua, T. (2012), Crustal deformation of northeastern Japan based on geodetic data for recent 120 years, J. Geol. Soc. Jpn., 118, 278-293, doi:10.5575/geosoc.2012.0027. (in Japanese with English abstract) .[PDF: 3.82MB]
(Non-peer-reviewed)
  • Kobayashi, T., M. Tobita, A. Suzuki, and Y. Noguchi (2012), InSAR-derived coseismic deformation of the 2010 southeastern Iran earthquake (M6.5) and its relationship with the tectonic background in the south of Lut Block, Bull. Geospatial Info. Auth. Jpn., 60, 7-17.  [PDF: 1.83MB]


FY2011

(Peer-reviewed)
  • Nishimura, T. (2011), Back-arc spreading of the northern Izu-Ogasawara (Bonin) Islands arc clarified by GPS data, Tectonophysics, 512, 60-67, doi:10.1016/j.tecto.2011.09.022. [html]
  • Suito, H., T. Nishimura, M. Tobita, T. Imakiire, and S. Ozawa (2011), Interplate fault slip along the Japan Trench before the occurrence of the 2011 off the Pacific coast of Tohoku Earthquake as inferred from GPS data , Earth Planets Space, 63, 615-619, doi:10.5047/eps.2011.06.053. [PDF: 2.73MB]
  • Kobayashi, T., M. Tobita, T. Nishimura, A. Suzuki, Y. Noguchi, and M. Yamanka (2011), Crustal deformation map for the 2011 off the Pacific coast of Tohoku Earthquake, detected by InSAR analysis combined with GEONET data, Earth Planets Space, 63, 621-625, doi:10.5047/eps.2011.06.043. [PDF: 3.33MB]
  • Nishimura, T., H. Munekane, and H. Yarai (2011), The 2011 off the Pacific coast of Tohoku Earthquake and its aftershocks observed by GEONET, Earth Planets Space, 63, 631-636, doi:10.5047/eps.2011.06.025. [PDF: 2.55MB]
  • Kobayashi T., M. Tobita, and M. Murakami (2011), Pixel Offset Technique for Measuring Local Large Ground Surface Displacement, J. Goed. Soc. Jpn., 57, 71-81. (in Japanese with English abstract) [PDF: 1.03MB]
  • Ozawa, S., T. Nishimura, H. Suito, T. Kobayashi, M. Tobita, and T. Imakiire (2011), Coseismic and postseismic slip of the 2011 maginutde-9 Tohoku-Oki earthquake, Nature, 475, 373-376, doi:10.1038/nature10227. [html]
  • Tobita, M., T. Nishimura, T. Kobayashi, K.X. Hao, and Y. Shindo (2011), Estimation of coseismic deformation and a fault model of the 2010 Yushu earthquake using PALSAR interferometry data, Earth Planet. Sci. Lett., 307, 430-438, doi:10.1016/j.epsl.2011.05.017. [html]
  • Nishimura, T. (2011), Elucidation of interplate coupling based on geodetic data, J. Geod. Soc. Jpn., 57, 1-14. (in Japanese with English abstract)
(Non-peer-reviewed)
  • Suito, H., T. Nishimura, S. Ozawa, T. Kobayashi, M. Tobita, T. Imakiire, S. Hara, H. Yarai, T. Yahagi, H. Kimura, and S. Kawamoto (2011), Coseismic Deformation and Fault Model of the 2011 off the Pacific coast of Tohoku Earthquake, Based on GEONET, Journal of Geospatial Information Authority of Japan, 122, 29-37. (in Japanese) [PDF: 1.31MB]
  • Suito, H., T. Nishimura, S. Ozawa, M. Tobita, S. Hara, H. Yarai, T. Yahagi, H. Kimura, and S. Kawamoto (2011), Postseismic Deformation and Postseismic Slip Model Following the 2011 off the Pacific coast of Tohoku Earthquake, Based on GEONET, Journal of Geospatial Information Authority of Japan122, 39-46. (in Japanese) [PDF: 1.33MB]
  • Kobayashi, T., M. Tobita, M. Koarai, K. Otoi, and T. Nakano (2011), Liquefaction Area Associated with the 2011 off the Pacific coast of Tohoku Earthquake, Inferred from Interferometric SAR Coherence Change, Journal of Geospatial Information Authority of Japan122, 143-151. (in Japanese) [PDF: 4.27MB]
  • Kobayashi, T., M. Tobita, A. Suzuki, and Y. Noguchi (2011), InSAR Analysis of the 2010 Fukushima-ken Nakadori Earthquake (M5.7), Journal of Geospatial Information Authority of Japan121, 165-169. (in Japanese) [PDF: 3.88MB]
  • Kobayashi, T., M. Tobita, T. Imakiire, A. Suzuki, Y. Noguchi, and M. Ishihara (2011), Estimate of Crustal Deformation and Pressure Sources of Mt. Kirishima (Shinmoedake) Volcanic Activity, Derived from InSAR Analysis Using Daichi SAR Data, Journal of Geospatial Information Authority of Japan121, 195-201. (in Japanese) [PDF: 7.09MB]

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