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Crustal Deformation Research Division

Research Works and Results

Topics

Researchers (FY2018)

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


FY2018

(peer-reviewed)
  • Morishita, Y., T. Kobayashi, S. Fujiwara, and H. Yarai (2018), Complex crustal deformation of the 2016 Kaikoura, New Zealand, earthquake revealed by ALOS‐2, Bull. Seismol. Soc. Am., 108(3B), 1746-1756, doi:10.1785/0120180070. [html]
  • Suito, H. (2018), Current Status of Postseismic Deformation Following the 2011 Tohoku-Oki Earthquake, J. Disaster Res.., 13(3), 503-510, doi:10.20965/jdr.2018.p0503. [html]
  • Kobayashi, T. (2018), Locally distributed ground deformation in an area of potential phreatic eruption, Midagahara volcano, Jpana, detected by single-look-based InSAR time series analysis, J. Volcanology and Geothermal Res., 357, 213-223, doi:10.1016/j.jvolgeores.2018.04.023. [html]
  • Kobayashi, T., Y. Morishita, and H. Munekane (2018), First detection of precursory ground inflation of a small phreatic eruption by InSAR, Earth Planet. Sci. Lett, 491, 244-254, doi:10.1016/j.epsl.2018.03.041. [html] (article in Physics Today [Online] [Text] )

FY2017

(Peer-reviewed)
  • Kobayashi, T., Y. Morishita and H. Yarai (2018), SAR-revealed slip partitioning on a bending fault plane for the 2014 Northern Nagano earthquake at the northern Itoigawa-Shizuoka tectonic line, Tectonophysics, 733, 85-99, doi:10.1016/j.tecto.2017.12.001. [html][PDF:4.1MB]
  • 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]
(Non-peer-reviewed)
  • Kobayashi, T., Y. Morishita, H. Yarai, and S. Fujiwara (2018), InSAR-derived Crustal Deformation and Reverse Fault Motion of the 2017 Iran-Iraq Earthquake in the Northwest of the Zagros Orogenic Belt, Bull. Geospatial Info. Auth.66. [PDF: 1.3MB]
  • Kobayashi, T. (2017) , Crustal deformation of the Kumamoto Earthquake detected by ALOS-2, Report on the Damage Surveys and Investigations Following the 2016 Kumamoto Earthquake, Chap. 2.3. (in Japanese) [html]
  • Kobayashi, T., H. Yarai, Y. Morishita, S. Kawamoto, S. Fujiwara and T. Nakano (2017), Detailed ground surface displacement and fault ruptures of the 2016 Kumamoto Earthquake Sequence revealed by SAR and GNSS data, in Proc. 11th UJNR 2016, California, 31-32, doi:10.3133/ofr20171133. [PDF: 9.1MB]
  • Fujiwara, S., H. Yarai , T. Kobayashi, Y. Morishita, T. Nakano, B. Miyahara, H. Nakai, Y. Miura, H. Ueshiba, Y. Kakiage and H. Une, Small (2017) Small displacement surface linear ruptures of the 2016 Kumamoto Earthquake Sequence detected by ALOS-2 SAR interferometry, in Proc. 11th UJNR 2016, California, 33-34, doi:10.3133/ofr20171133. [PDF: 9.1MB]
  • 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, in Proc. 11th UJNR 2016, California, 131-132, doi:10.3133/ofr20171133. [PDF: 9.1MB]

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]
(Non-peer-reviewed)
  • Yarai, H., T. Kobayashi, Y. Morishita, S. Fujiwara, Y. Hiyama, S. Kawamoto, H. Ueshiba, Y. Miura and B. Miyahara (2016), Source fault models of the 2016 Kumamoto Earthquake inverted from crustal deformation, Journal of Geospatial Information Authority of Japan, 128, 169-176. (in Japanese) [PDF: 2.4MB]
  • Yarai, H., T. Kobayashi, Y. Morishita, S. Fujiwara, Y. Miura, B. Miyahara and SAR analysis group (2016), Crustal deformation of the Kumamoto Earthquake detected by ALOS-2 InSAR images, J. Japan soc. photogrammetry remote sens., 55(3), 166-167, doi:10.4287/jsprs.55.166. (in Japanese) [html][PDF: 349KB]
  • Yarai, H., T. Kobayashi, Y. Morishita, S. Yamada, Y. Miura, K. Wada, H. Nakai, M. Yamanaka, Y. Kakiage, and H. Ueshiba (2016), Active volcano monitoring using ALOS-2 SAR interferometry, J. Japan soc. photogrammetry remote sens., 55(1), 6-11, doi:10.4287/jsprs.55.6. (in Japanese) [html][PDF: 662KB]

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