Skip to main content

The 2018 Hokkaido Eastern Iburi Earthquake and Hidaka arc-arc collision system

The 2018 Mw 6.6 Hokkaido Eastern Iburi Earthquake generated strong ground shaking of JMA maximum intensity 7 and induced fatal landslides. The earthquake occurred beneath inland Hokkaido with an unusual deep hypocenter depth of 35km, possibly reflecting complex crustal and mantle structure of Hidaka arc-arc collision system. Connection of the earthquake with its nearby major active faults is still not very clear so far. Strong ground motion evaluation strategy of deep crustal earthquake is future challenge. This special issue will focus on multidisciplinary geoscientific researches by seismology, geodesy, electromagnetic and landslide study regarding this earthquake and associated phenomena.

Edited by Hiroaki Takahashi, Nobuo Takai, Masahiro Chigira, Guojie Meng, Saeko Kita and Takuji Yamada

  2. Six wells were continuously monitored in Hokkaido, northern Japan, to relate groundwater level changes to regional seismic activity. Groundwater level changes following the 2018 Hokkaido Eastern Iburi earthqua...

    Authors: Tomo Shibata, Ryo Takahashi, Hiroaki Takahashi, Takanori Kagoshima, Naoto Takahata, Yuji Sano and Daniele L. Pinti
    Citation: Earth, Planets and Space 2020 72:23
    Content type: Express Letter Published on:

  3. In this study, we investigate the source rupture process of the 2018 Hokkaido Eastern Iburi earthquake in Japan (MJMA 6.7) and how the ground motion can be reproduced using available source and velocity models. F...

    Authors: Hisahiko Kubo, Asako Iwaki, Wataru Suzuki, Shin Aoi and Haruko Sekiguchi
    Citation: Earth, Planets and Space 2020 72:20
    Content type: Express Letter Published on:

  4. We applied the epidemic type aftershock sequence (ETAS) model, the two-stage ETAS model and the non-stationary ETAS model to investigate the detailed features of the series of earthquake occurrences before and...

    Authors: Takao Kumazawa, Yosihiko Ogata and Hiroshi Tsuruoka
    Citation: Earth, Planets and Space 2019 71:130
    Content type: Full paper Published on:

  5. I relocated the hypocenters of the 2018 M6.7 Hokkaido Eastern Iburi earthquake and its surrounding area, using a three-dimensional seismic structure, the double-difference relocation method, and the JMA earthq...

    Authors: Saeko Kita
    Citation: Earth, Planets and Space 2019 71:122
    Content type: Full paper Published on:

  6. We investigate S-wave attenuation (Qs) structure in and around Hokkaido, Japan, including the source area of the 2018 Hokkaido Eastern Iburi Earthquake (M 6.7) and its aftershocks. From the strong-motion seism...

    Authors: Ryoichi Nakamura and Takahiro Shiina
    Citation: Earth, Planets and Space 2019 71:114
    Content type: Express Letter Published on:

  7. The Hokkaido Eastern Iburi Earthquake (M = 6.7) occurred on Sep. 6, 2018 in the southern part of Central Hokkaido, Japan. Since Paleogene, this region has experienced the dextral oblique transpression between the...

    Authors: Takaya Iwasaki, Noriko Tsumura, Tanio Ito, Kazunori Arita, Matsubara Makoto, Hiroshi Sato, Eiji Kurashimo, Naoshi Hirata, Susumu Abe, Katsuya Noda, Akira Fujiwara, Shinsuke Kikuchi and Kazuko Suzuki
    Citation: Earth, Planets and Space 2019 71:103
    Content type: Frontier letter Published on:

    The Correction to this article has been published in Earth, Planets and Space 2020 72:39

  8. The source rupture process of the 2018 Hokkaido Eastern Iburi earthquake (MJMA 6.7) was analyzed by a kinematic waveform inversion method using strong-motion data in 0.04–0.5 Hz. This earthquake occurred close to...

    Authors: Kimiyuki Asano and Tomotaka Iwata
    Citation: Earth, Planets and Space 2019 71:101
    Content type: Full paper Published on:

  9. The Hidaka collision zone, the collision boundary between the NE Japan and Kurile arcs, is known to be an ideal region to study the evolution of island arcs. The hypocenter of the 2018 Hokkaido Eastern Iburi e...

    Authors: Hiroshi Ichihara, Toru Mogi, Hideyuki Satoh and Yusuke Yamaya
    Citation: Earth, Planets and Space 2019 71:100
    Content type: Express Letter Published on:

  10. In this study, we investigate the source rupture process of the 2018 Hokkaido Eastern Iburi earthquake in Japan (MJMA 6.7) and how the ground motion can be reproduced using available source and velocity models. F...

    Authors: Hisahiko Kubo, Asako Iwaki, Wataru Suzuki, Shin Aoi and Haruko Sekiguchi
    Citation: Earth, Planets and Space 2019 71:98
    Content type: Express Letter Published on:

    The Retraction Note to this article has been published in Earth, Planets and Space 2019 71:142

  11. This study examined the frequency-size distribution of 6117 landslides spread over 440 km2 in Iburi Subprefecture, Hokkaido, Japan, induced by the Hokkaido Eastern Iburi Earthquake (Mw 6.6) on September 6, 2018. ...

    Authors: Mio Kasai and Takashi Yamada
    Citation: Earth, Planets and Space 2019 71:89
    Content type: Full paper Published on:

  12. The present location of the tectonic boundary and the convergence rate between the Amur and Okhotsk plates in northern Hokkaido, Japan, were herein estimated from the velocity field using data from a continuou...

    Authors: Chihiro Ito, Hiroaki Takahashi and Mako Ohzono
    Citation: Earth, Planets and Space 2019 71:86
    Content type: Express Letter Published on:

  13. Autocorrelation analysis using ambient noise is a useful method to detect temporal changes in wave velocity and scattering property. In this study, we investigated the temporal changes in seismic wave velocity...

    Authors: Hiroki Ikeda and Ryota Takagi
    Citation: Earth, Planets and Space 2019 71:72
    Content type: Full paper Published on:

  14. We investigated the cause of destructive ground motion during the 2018 Hokkaido eastern Iburi earthquake. We conducted strong motion observations of aftershocks and microtremors and the surface wave method in ...

    Authors: Nobuo Takai, Michiko Shigefuji, Jun Horita, Shingo Nomoto, Takahiro Maeda, Masayoshi Ichiyanagi, Hiroaki Takahashi, Hiroaki Yamanaka, Kosuke Chimoto, Seiji Tsuno, Masahiro Korenaga and Nobuyuki Yamada
    Citation: Earth, Planets and Space 2019 71:67
    Content type: Full paper Published on:

  15. The 2018 Hokkaido Iburi-Tobu earthquake occurred on September 6. In this earthquake, seismic intensity 7 was measured at Shikanuma, Atsuma Town, and severe damage occurred in Hokkaido. The strong motions were ...

    Authors: Kenichi Nakano and Hiroshi Kawase
    Citation: Earth, Planets and Space 2019 71:66
    Content type: Express Letter Published on:

  16. We identified and analyzed surface displacements associated with the 2018 Hokkaido Eastern Iburi Earthquake in northern Japan using satellite radar interferograms from the Advanced Land Observing Satellite 2. ...

    Authors: Satoshi Fujiwara, Takayuki Nakano, Yu Morishita, Tomokazu Kobayashi, Hiroshi Yarai, Hiroshi Une and Kyonosuke Hayashi
    Citation: Earth, Planets and Space 2019 71:64
    Content type: Full paper Published on:

  17. The source rupture process of the 2018 Hokkaido Eastern Iburi earthquake was investigated by performing a joint inversion analysis using the strong motion and geodetic data. A fault model that consists of two ...

    Authors: Hiroaki Kobayashi, Kazuki Koketsu and Hiroe Miyake
    Citation: Earth, Planets and Space 2019 71:63
    Content type: Full paper Published on:

  18. By applying the InSAR method to ALOS-2 SAR data acquired before and after the 2018 Hokkaido Eastern Iburi earthquake, the ground displacement fields were successfully mapped. Ground deformation is distributed ...

    Authors: Tomokazu Kobayashi, Kyonosuke Hayashi and Hiroshi Yarai
    Citation: Earth, Planets and Space 2019 71:62
    Content type: Express Letter Published on:

  19. The 2018 Mj 6.7 Hokkaido Eastern Iburi earthquake (Iburi earthquake) occurred near the eastern boundary fault zone of the Ishikari lowlands, which is composed of a northern and southern fault. Aftershock distribu...

    Authors: Makiko Ohtani and Kazutoshi Imanishi
    Citation: Earth, Planets and Space 2019 71:57
    Content type: Full paper Published on:

  20. The observed peak ground accelerations and peak ground velocities (PGVs) of the 2018 Mw 6.6 Hokkaido eastern Iburi earthquake generally followed the median values from ground motion prediction equations with r...

    Authors: Yadab P. Dhakal, Takashi Kunugi, Takeshi Kimura, Wataru Suzuki and Shin Aoi
    Citation: Earth, Planets and Space 2019 71:56
    Content type: Full paper Published on:

  21. The Hokkaido Eastern Iburi earthquake (MJMA = 6.7) occurred on September 6, 2018, in the Hokkaido corner region where the Kurile and northeastern Japan island arcs meet. We relocated aftershocks of this intraplat...

    Authors: Kei Katsumata, Masayoshi Ichiyanagi, Mako Ohzono, Hiroshi Aoyama, Ryo Tanaka, Masamitsu Takada, Teruhiro Yamaguchi, Kazumi Okada, Hiroaki Takahashi, Shin’ichi Sakai, Satoshi Matsumoto, Tomomi Okada, Toru Matsuzawa, Shuichiro Hirano, Toshiko Terakawa, Shinichiro Horikawa…
    Citation: Earth, Planets and Space 2019 71:53
    Content type: Express Letter Published on:

  22. Based on analyses of global navigation satellite system data since 1996, we investigate the spatiotemporal strain field around the Ishikari-Teichi-Toen fault zone, which is a major active fault zone close to t...

    Authors: Mako Ohzono, Hiroaki Takahashi and Chihiro Ito
    Citation: Earth, Planets and Space 2019 71:50
    Content type: Express Letter Published on: