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4. Seismology

Page 4 of 7

  1. The Ryukyu (Nansei-Shoto) island arc-trench system, southwest of Japan, is formed by the subduction of the Philippine Sea (PHS) plate. Among the subduction zones surrounding the Japan Islands, the Ryukyu arc-t...

    Authors: Azusa Nishizawa, Kentaro Kaneda, Mitsuhiro Oikawa, Daishi Horiuchi, Yukari Fujioka and Chiaki Okada

    Citation: Earth, Planets and Space 2017 69:86

    Content type: Full paper

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  2. We carried out statistical evaluations of two probability density functions for the microboudin palaeopiezometer using the Akaike information criterion (AIC) and the cross-validation (CV) technique. In terms o...

    Authors: Tarojiro Matsumura, Tatsu Kuwatani and Toshiaki Masuda

    Citation: Earth, Planets and Space 2017 69:83

    Content type: Full paper

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  3. We have analyzed the spatial variation in coda Q in the northeastern part of a high strain rate zone, the Niigata–Kobe Tectonic Zone (NKTZ), to investigate the cause of the high strain rate by correlating coda Q ...

    Authors: Masanobu Dojo and Yoshihiro Hiramatsu

    Citation: Earth, Planets and Space 2017 69:76

    Content type: Express Letter

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  4. We present the results of relocating 17,544 hypocenters determined from data recorded during the 2016 Kumamoto Earthquake sequence, during the interval between April 14, 2016, and August 31, 2016. For this, w...

    Authors: Tomoko Elizabeth Yano and Makoto Matsubara

    Citation: Earth, Planets and Space 2017 69:74

    Content type: Letter

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  5. An earthquake of JMA magnitude 6.5 (foreshock) hit Kumamoto Prefecture, Japan, at 21:26 JST on April 14, 2016. Subsequently, an earthquake of JMA magnitude 7.3 (main shock) hit Kumamoto and Oita Prefectures a...

    Authors: Yoshiya Hata, Masayuki Yoshimi, Hiroyuki Goto, Takashi Hosoya, Hitoshi Morikawa and Takao Kagawa

    Citation: Earth, Planets and Space 2017 69:72

    Content type: Express Letter

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    The Retraction Note to this article has been published in Earth, Planets and Space 2019 71:61

  6. In order to clarify the origin of aftershocks, we precisely analyze the hypocenters and focal mechanisms of the aftershocks following the 2000 Western Tottori Earthquake, which occurred in the western part of ...

    Authors: Yohei Yukutake and Yoshihisa Iio

    Citation: Earth, Planets and Space 2017 69:68

    Content type: Full paper

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  7. A simple and efficient finite-difference scheme is developed to calculate seismic wave propagation in a partial spherical shell model of a three-dimensionally (3-D) heterogeneous global Earth structure for mod...

    Authors: Hiroshi Takenaka, Masanao Komatsu, Genti Toyokuni, Takeshi Nakamura and Taro Okamoto

    Citation: Earth, Planets and Space 2017 69:67

    Content type: Frontier letter

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  8. In this study, we estimated source process of the 2016 Kumamoto earthquake from strong-motion data by using the multiple-time window linear kinematic waveform inversion method to discuss generation of strong m...

    Authors: Kunikazu Yoshida, Ken Miyakoshi, Kazuhiro Somei and Kojiro Irikura

    Citation: Earth, Planets and Space 2017 69:64

    Content type: Letter

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  9. Post-seismic investigations repeatedly indicate that structures having frequencies close to foundation soil frequencies exhibit significantly heavier damages (Caracas 1967; Mexico 1985; Pujili, Ecuador 1996; L...

    Authors: Christelle Salameh, Pierre-Yves Bard, Bertrand Guillier, Jacques Harb, Cécile Cornou, Jocelyne Gérard and Michelle Almakari

    Citation: Earth, Planets and Space 2017 69:60

    Content type: Full paper

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  10. The alteration and dehydration of predominantly basaltic subducting oceanic crustal material are thought to be important controls on the mechanical and hydrological properties of the seismogenic plate interfac...

    Authors: Jun Kameda, Sayako Inoue, Wataru Tanikawa, Asuka Yamaguchi, Yohei Hamada, Yoshitaka Hashimoto and Gaku Kimura

    Citation: Earth, Planets and Space 2017 69:52

    Content type: Full paper

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  11. We conducted synthetic experiments to evaluate the effects of shallow-layer reverberation in oceanic regions on P-wave travel times measured by waveform cross-correlation. Time shift due to waveform distortion...

    Authors: Masayuki Obayashi, Yasushi Ishihara and Daisuke Suetsugu

    Citation: Earth, Planets and Space 2017 69:44

    Content type: Letter

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  12. Coda-wave interferometry is a technique to detect small seismic velocity changes using phase changes in similar waveforms from repeating natural or artificial sources. Seismic interferometry is another techniq...

    Authors: Takashi Hirose, Hisashi Nakahara and Takeshi Nishimura

    Citation: Earth, Planets and Space 2017 69:42

    Content type: Letter

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  13. An M 6.8 (Mw 6.5) deep-focus earthquake occurred beneath the Bonin Islands at 21:18 (JST) on June 23, 2015. Observed high-frequency (>1 Hz) seismograms across Japan, which contain several sets of P- and S-wave ar...

    Authors: Shunsuke Takemura, Tatsuhiko Saito and Katsuhiko Shiomi

    Citation: Earth, Planets and Space 2017 69:38

    Content type: Letter

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  14. To evaluate local site effects in Kumamoto City, we installed six temporary seismic stations along a 6-km north–south survey line in the city immediately after the 2016 Kumamoto earthquake foreshock (Mj 6.4),...

    Authors: Seiji Tsuno, Masahiro Korenaga, Kyosuke Okamoto, Hiroaki Yamanaka, Kosuke Chimoto and Takeshi Matsushima

    Citation: Earth, Planets and Space 2017 69:37

    Content type: Letter

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  15. This study investigates the missing data problem in the Japan Meteorological Agency catalog of the Kumamoto aftershock sequence, which occurred since April 15, 2016, in Japan. Based on the assumption that ear...

    Authors: Jiancang Zhuang, Yosihiko Ogata and Ting Wang

    Citation: Earth, Planets and Space 2017 69:36

    Content type: Full paper

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  16. We determined hypocenter distributions and focal mechanisms of earthquakes off the Boso Peninsula, Japan, based on seafloor observations using ocean-bottom seismometers (OBSs). From OBS data, we detected and l...

    Authors: Aki Ito, Hiroko Sugioka, Koichiro Obana, Ryota Hino, Daisuke Suetsugu, Kazuo Nakahigashi, Masanao Shinohara, Masaru Nakano and Yojiro Yamamoto

    Citation: Earth, Planets and Space 2017 69:30

    Content type: Letter

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  17. We analyzed S-wave horizontal-to-vertical (S-H/V) spectral ratios at six ocean bottom seismograph (OBS) sites of K-NET located in the Sagami Bay area of Japan for nonlinear site responses. The degree of nonlin...

    Authors: Yadab P. Dhakal, Shin Aoi, Takashi Kunugi, Wataru Suzuki and Takeshi Kimura

    Citation: Earth, Planets and Space 2017 69:29

    Content type: Letter

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  18. The catastrophic Wulong landslide occurred at 14:51 (Beijing time, UTC+8) on 5 June 2009, in Wulong Prefecture, Southwest China. This rockslide occurred in a complex topographic environment. Seismic signals ge...

    Authors: Zhengyuan Li, Xinghui Huang, Qiang Xu, Dan Yu, Junyi Fan and Xuejun Qiao

    Citation: Earth, Planets and Space 2017 69:27

    Content type: Full paper

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  19. The ~30-km-long surface ruptures associated with the M w 7.0 (M j 7.3) earthquake at 01:25 JST on April 16 in Kumamoto Prefecture appeared along the previously mapp...

    Authors: Hideaki Goto, Hiroyuki Tsutsumi, Shinji Toda and Yasuhiro Kumahara

    Citation: Earth, Planets and Space 2017 69:26

    Content type: Letter

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  20. In this study, the rupture process of the main shock of the Kumamoto earthquake, particularly the generation of strong ground motions in the frequency range relevant to structural damage, was investigated bas...

    Authors: Atsushi Nozu and Yosuke Nagasaka

    Citation: Earth, Planets and Space 2017 69:22

    Content type: Full paper

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  21. The nationwide strong-motion seismograph network of K-NET and KiK-net in Japan successfully recorded the strong ground motions of the 2016 Kumamoto earthquake sequence, which show the several notable character...

    Authors: Wataru Suzuki, Shin Aoi, Takashi Kunugi, Hisahiko Kubo, Nobuyuki Morikawa, Hiromitsu Nakamura, Takeshi Kimura and Hiroyuki Fujiwara

    Citation: Earth, Planets and Space 2017 69:19

    Content type: Letter

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  22. We have investigated gravity anomalies around the Niigata plain, which is a sedimentary basin in central Japan bounded by mountains, to examine the continuity of subsurface fault structures of a large fault zo...

    Authors: Shigeki Wada, Akihiro Sawada, Yoshihiro Hiramatsu, Nayuta Matsumoto, Shinsuke Okada, Toshiyuki Tanaka and Ryo Honda

    Citation: Earth, Planets and Space 2017 69:15

    Content type: Letter

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  23. The 2016 Kumamoto earthquakes in Kyushu, Japan, started with a magnitude (M) 6.5 quake on April 14 on the Hinagu fault zone (FZ), followed by active seismicity including an M6.4 quake. Eventually, an M7.3 quake o...

    Authors: K. Z. Nanjo and A. Yoshida

    Citation: Earth, Planets and Space 2017 69:13

    Content type: Full paper

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  24. A two-stage scaling relationship of the source parameters for crustal earthquakes in Japan has previously been constructed, in which source parameters obtained from the results of waveform inversion of strong ...

    Authors: Kojiro Irikura, Ken Miyakoshi, Katsuhiro Kamae, Kunikazu Yoshida, Kazuhiro Somei, Susumu Kurahashi and Hiroe Miyake

    Citation: Earth, Planets and Space 2017 69:10

    Content type: Full paper

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  25. The past devastating earthquakes in densely populated urban centers, such as the 1994 Northridge; 1995 Kobe; 1999 series of Kocaeli, Düzce, and Athens; and 2011 Van-Erciş events, showed that substantial socia...

    Authors: A. Can Zülfikar, N. Özge Zülfikar Fercan, Süleyman Tunç and Mustafa Erdik

    Citation: Earth, Planets and Space 2017 69:9

    Content type: Full paper

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  26. By applying conventional cross-track InSAR and multiple-aperture InSAR (MAI) techniques with ALOS-2 SAR data to foreshocks of the 2016 Kumamoto earthquake, ground displacement fields in range (line-of-sight) a...

    Authors: Tomokazu Kobayashi

    Citation: Earth, Planets and Space 2017 69:7

    Content type: Letter

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  27. The M JMA 7.3 Kumamoto earthquake that occurred at 1:25 JST on April 16, 2016, not only triggered aftershocks in the vicinity of the epicenter, but also triggered earthquakes that were 50...

    Authors: Koki Aizawa, Hisafumi Asaue, Katsuaki Koike, Shinichi Takakura, Mitsuru Utsugi, Hiroyuki Inoue, Ryokei Yoshimura, Ken’ichi Yamazaki, Shintaro Komatsu, Makoto Uyeshima, Takao Koyama, Wataru Kanda, Taro Shiotani, Nobuo Matsushima, Maki Hata, Tohru Yoshinaga…

    Citation: Earth, Planets and Space 2017 69:4

    Content type: Letter

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  28. To understand the cause of heavy structural damage during the mainshock (on April 16, 2016) of the 2016 Kumamoto earthquake sequence, we carried out a field survey from April 29 through May 1, 2016, in Mashiki...

    Authors: Hiroshi Kawase, Shinichi Matsushima, Fumiaki Nagashima, Baoyintu and Kenichi Nakano

    Citation: Earth, Planets and Space 2017 69:3

    Content type: Letter

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  29. We resolve the density structure of a possible magma reservoir beneath Aso, an active volcano on Kyushu Island, Japan, by inverting gravity data. In the context of the resolved structure, we discuss the relati...

    Authors: Ayumu Miyakawa, Tatsuya Sumita, Yasukuni Okubo, Ryo Okuwaki, Makoto Otsubo, Shimpei Uesawa and Yuji Yagi

    Citation: Earth, Planets and Space 2016 68:208

    Content type: Letter

    Published on:

  30. Shallow S-wave velocity V S profiles were estimated for 26 temporary strong motion observation sites surrounding the epicenters of a sequence of the 2016 Kumamoto earthquake. The microtrem...

    Authors: Kosuke Chimoto, Hiroaki Yamanaka, Seiji Tsuno, Hiroe Miyake and Nobuyuki Yamada

    Citation: Earth, Planets and Space 2016 68:206

    Content type: Letter

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  31. High-amplitude seismic waves from the Mw 7.0 Kumamoto earthquake of April 16, 2016, triggered another large earthquake 80 km to the NE roughly 30 s later. The source was located at shallow depths beneath the Y...

    Authors: Masatoshi Miyazawa

    Citation: Earth, Planets and Space 2016 68:205

    Content type: Letter

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  32. At the 2016 Kumamoto earthquake, surface ruptures were observed not only along the Futagawa fault, where main ruptures occurred, but also along the Hinagu fault. To estimate the slip distribution on these faul...

    Authors: Yukitoshi Fukahata and Manabu Hashimoto

    Citation: Earth, Planets and Space 2016 68:204

    Content type: Full paper

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  33. An earthquake of JMA magnitude 6.5 (first event) hit Kumamoto Prefecture, Japan, at 21:26 JST, April 14, 2016. Subsequently, an earthquake of JMA magnitude 7.3 (second event) hit Kumamoto and Oita Prefectures...

    Authors: Yoshiya Hata, Masaaki Yabe, Akira Kasai, Hiroshi Matsuzaki, Yoshikazu Takahashi and Mitsuyoshi Akiyama

    Citation: Earth, Planets and Space 2016 68:199

    Content type: Letter

    Published on:

  34. We conduct waveform inversion to infer the three-dimensional (3-D) S-velocity structure in the lowermost 400 km of the mantle (the D′′ region) beneath the Northern Pacific region. Our dataset consists of about...

    Authors: Yuki Suzuki, Kenji Kawai, Robert J. Geller, Anselme F. E. Borgeaud and Kensuke Konishi

    Citation: Earth, Planets and Space 2016 68:198

    Content type: Frontier letter

    Published on:

  35. We have conducted observation of earthquake ground motion due to aftershocks of the 2016 Kumamoto earthquake at 26 temporary stations in damaged areas of Kumamoto city, Mashiki town, Nishihara village and Mina...

    Authors: Hiroaki Yamanaka, Kosuke Chimoto, Hiroe Miyake, Seiji Tsuno and Nobuyuki Yamada

    Citation: Earth, Planets and Space 2016 68:197

    Content type: Letter

    Published on:

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