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  1. Content type: Full paper

    This paper reviews seismic activity in and around the Kumamoto region before and after the April 16, 2016, Kumamoto earthquake of M7.3 using statistical models such as stationary, two-stage, and non-stationary...

    Authors: Takao Kumazawa, Yosihiko Ogata and Hiroshi Tsuruoka

    Citation: Earth, Planets and Space 2017 69:169

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  2. Content type: Full paper

    We provide an overview of data products from observations by the Japanese Venus Climate Orbiter, Akatsuki, and describe the definition and content of each data-processing level. Levels 1 and 2 consist of non-c...

    Authors: Kazunori Ogohara, Masahiro Takagi, Shin-ya Murakami, Takeshi Horinouchi, Manabu Yamada, Toru Kouyama, George L. Hashimoto, Takeshi Imamura, Yukio Yamamoto, Hiroki Kashimura, Naru Hirata, Naoki Sato, Atsushi Yamazaki, Takehiko Satoh, Naomoto Iwagami, Makoto Taguchi…

    Citation: Earth, Planets and Space 2017 69:167

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  3. Content type: Full paper

    In this report, we describe the low-energy electron instrument LEPe (low-energy particle experiments–electron analyzer) onboard the Arase (ERG) spacecraft. The instrument measures a three-dimensional distribut...

    Authors: Yoichi Kazama, Bo-Jhou Wang, Shiang-Yu Wang, Paul T. P. Ho, Sunny W. Y. Tam, Tzu-Fang Chang, Chih-Yu Chiang and Kazushi Asamura

    Citation: Earth, Planets and Space 2017 69:165

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  4. Content type: Full paper

    The Gravity Recovery and Climate Experiment (GRACE) has monitored global gravity changes since 2002. Gravity changes are considered to represent hydrological water mass movements around the surface of the glob...

    Authors: Yuta Mitsui and Kyohei Yamada

    Citation: Earth, Planets and Space 2017 69:166

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  5. Content type: Express Letter

    The 1906 Colombia–Ecuador earthquake induced both strong seismic motions and a tsunami, the most destructive earthquake in the history of the Colombia–Ecuador subduction zone. The tsunami propagated across the...

    Authors: Yusuke Yamanaka, Yuichiro Tanioka and Takahiro Shiina

    Citation: Earth, Planets and Space 2017 69:163

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  6. Content type: Full paper

    In the present study, we analyze the seismic signals from a continuous volcanic tremor that occurred during a small phreatic eruption of the Hakone volcano, in the Owakudani geothermal region of central Japan,...

    Authors: Yohei Yukutake, Ryou Honda, Masatake Harada, Ryosuke Doke, Tatsuhiko Saito, Tomotake Ueno, Shin’ichi Sakai and Yuichi Morita

    Citation: Earth, Planets and Space 2017 69:164

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  7. Content type: Full paper

    Under the diffuse field approximation, the full-wave (FW) microtremor H/V spectral ratio (H/V) is modeled as the square root of the ratio of the sum of imaginary parts of the Green’s function of the horizontal co...

    Authors: Hao Wu, Kazuaki Masaki, Kojiro Irikura and Francisco José Sánchez-Sesma

    Citation: Earth, Planets and Space 2017 69:162

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  8. Content type: Full paper

    The plasmas (electrons and ions) in the inner magnetosphere have wide energy ranges from electron volts to mega-electron volts (MeV). These plasmas rotate around the Earth longitudinally due to the gradient an...

    Authors: Kazuo Shiokawa, Yasuo Katoh, Yoshiyuki Hamaguchi, Yuka Yamamoto, Takumi Adachi, Mitsunori Ozaki, Shin-Ichiro Oyama, Masahito Nosé, Tsutomu Nagatsuma, Yoshimasa Tanaka, Yuichi Otsuka, Yoshizumi Miyoshi, Ryuho Kataoka, Yuki Takagi, Yuhei Takeshita, Atsuki Shinbori…

    Citation: Earth, Planets and Space 2017 69:160

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  9. Content type: Express Letter

    Nishinoshima in Izu-Ogasawara started erupting in November 2013, and the island size increased. Continuous monitoring is important for study of the formation process. Since it is difficult to make continuous o...

    Authors: Masanao Shinohara, Mie Ichihara, Shin’ichi Sakai, Tomoaki Yamada, Minoru Takeo, Hiroko Sugioka, Yutaka Nagaoka, Akimichi Takagi, Taisei Morishita, Tomozo Ono and Azusa Nishizawa

    Citation: Earth, Planets and Space 2017 69:159

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  10. Content type: Full paper

    Regularization is used to solve the ill-posed problem of magnetotelluric inversion usually by adding a stabilizing functional to the objective functional that allows us to obtain a stable solution. Among a num...

    Authors: Yang Xiang, Peng Yu, Luolei Zhang, Shaokong Feng and Hisashi Utada

    Citation: Earth, Planets and Space 2017 69:158

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  11. Content type: Technical report

    We present a non-stationary epidemic-type aftershock sequence (ETAS) model in which the usual assumption of stationary background rate is relaxed. Such a model could be used for modeling seismic sequences affe...

    Authors: Sasi Kattamanchi, Ram Krishna Tiwari and Durbha Sai Ramesh

    Citation: Earth, Planets and Space 2017 69:157

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  12. Content type: Express Letter

    The electrical conductivity of the ocean is a fundamental parameter in the electrodynamics of the Earth System. This parameter is involved in a number of applications ranging from the calibration of in situ oc...

    Authors: Robert H. Tyler, Tim P. Boyer, Takuto Minami, Melissa M. Zweng and James R. Reagan

    Citation: Earth, Planets and Space 2017 69:156

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  13. Content type: Frontier Letter

    The first year (December 2015 to November 2016) of IR2 after Akatsuki’s successful insertion to an elongated elliptical orbit around Venus is reported with performance evaluation and results of data acquisitio...

    Authors: Takehiko Satoh, Takao M. Sato, Masato Nakamura, Yasumasa Kasaba, Munetaka Ueno, Makoto Suzuki, George L. Hashimoto, Takeshi Horinouchi, Takeshi Imamura, Atsushi Yamazaki, Takayuki Enomoto, Yuri Sakurai, Kosuke Takami, Kenta Sawai, Takashi Nakakushi, Takumi Abe…

    Citation: Earth, Planets and Space 2017 69:154

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  14. Content type: Full paper

    We installed two global navigation satellite system (GNSS) antennas on a research vessel, the RYOFU MARU of the Japan Meteorological Agency, and conducted experimental observations to assess the GNSS-derived ...

    Authors: Yoshinori Shoji, Kazutoshi Sato, Masanori Yabuki and Toshitaka Tsuda

    Citation: Earth, Planets and Space 2017 69:153

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  15. Content type: Full paper

    To understand the fault zone fluid flow-like structure, namely the ductile deformation structure, often observed in the geological field (e.g., Ramsay and Huber The techniques of modern structure geology, vol....

    Authors: H. Tanaka, Y. Shiomi and K.-F. Ma

    Citation: Earth, Planets and Space 2017 69:151

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  16. Content type: Full paper

    Using 3-D dynamic rupture simulations, we investigated the 2016 Mw7.1 Kumamoto, Japan, earthquake to elucidate why and how the rupture of the main shock propagated successfully, assuming a complicated fault geome...

    Authors: Yumi Urata, Keisuke Yoshida, Eiichi Fukuyama and Hisahiko Kubo

    Citation: Earth, Planets and Space 2017 69:150

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  17. Content type: Correction

    After publication of this work (Fukushima et al. 2017) some errors were noticed. In Figures 2b, 2c and 2f the letters ‘N’, ‘N’ and ‘S’ appear in the images, respectively. The original article was corrected. The p...

    Authors: D. Fukushima, K. Shiokawa, Y. Otsuka, M. Kubota, T. Yokoyama, M. Nishioka, S. Komonjinda and C. Y. Yatini

    Citation: Earth, Planets and Space 2017 69:149

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    The original article was published in Earth, Planets and Space 2017 69:112

  18. Content type: Correction

    After publication of this work (Chou and Cheng 2017), an error was noticed. In the Acknowledgements section, the wrong institution name was given as ‘the National Science Council of Taiwan’. However, the correct ...

    Authors: Marty Chou and Chio Zong Cheng

    Citation: Earth, Planets and Space 2017 69:148

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    The original article was published in Earth, Planets and Space 2017 69:122

  19. Content type: Full paper

    In the southern Tibetan plateau, which is considered to be the ongoing India–Eurasia continental collision zone, tracing of the Indian crustal front beneath Tibet is still controversial. We conducted deep subs...

    Authors: Chengliang Xie, Sheng Jin, Wenbo Wei, Gaofeng Ye, Letian Zhang, Hao Dong and Yaotian Yin

    Citation: Earth, Planets and Space 2017 69:147

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  20. Content type: Full paper

    Using data from high-density seismic observation networks installed in the western Nagano Prefecture region in Japan, we precisely determined focal mechanisms and estimated the high-resolution stress field at ...

    Authors: Yoshihisa Iio, Itaru Yoneda, Masayo Sawada, Tsutomu Miura, Hiroshi Katao, Yoichiro Takada, Kentaro Omura and Shigeki Horiuchi

    Citation: Earth, Planets and Space 2017 69:144

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    The Correction to this article has been published in Earth, Planets and Space 2018 70:20

  21. Content type: Correction

    Magnitude–frequency distributions of volcanic explosion earthquakes that are associated with occurrences of vulcanian and strombolian eruptions, or gas burst activity, are examined at six active volcanoes. The...

    Authors: Takeshi Nishimura, Masato Iguchi, Mohammad Hendrasto, Hiroshi Aoyama, Taishi Yamada, Maurizio Ripepe and Riccardo Genco

    Citation: Earth, Planets and Space 2017 69:143

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    The original article was published in Earth, Planets and Space 2016 68:125

  22. Content type: Full paper

    A profile of broadband magnetotelluric stations was acquired between 2009 and 2016 at 35°–36°S in the Southern Volcanic Zone of the Chilean Andes to image the subduction zone and its relation with the volcani...

    Authors: Valentina Reyes-Wagner, Daniel Díaz, Darcy Cordell and Martyn Unsworth

    Citation: Earth, Planets and Space 2017 69:142

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  23. Content type: Full paper

    The Venus Climate Orbiter Akatsuki arrived at Venus in December 2015, and the Longwave Infrared Camera (LIR) onboard the spacecraft started making observations. LIR has acquired more than 8000 images during th...

    Authors: Tetsuya Fukuhara, Makoto Taguchi, Takeshi Imamura, Akane Hayashitani, Takeru Yamada, Masahiko Futaguchi, Toru Kouyama, Takao M. Sato, Mao Takamura, Naomoto Iwagami, Masato Nakamura, Makoto Suzuki, Munetaka Ueno, George L. Hashimoto, Mitsuteru Sato, Seiko Takagi…

    Citation: Earth, Planets and Space 2017 69:141

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  24. Content type: Correction

    Following publication of the original article (Oda et al. 2016), the authors asked to add the following sentence, which should have appeared at the beginning of the acknowledgements: “The authors express sincere ...

    Authors: Hirokuni Oda, Isoji Miyagi, Jun Kawai, Yusuke Suganuma, Minoru Funaki, Naoya Imae, Takashi Mikouchi, Takuya Matsuzaki and Yuhji Yamamoto

    Citation: Earth, Planets and Space 2017 69:139

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    The original article was published in Earth, Planets and Space 2016 68:39

  25. Content type: Express Letter

    Despite strong anisotropy seen in analysis of seismic data from the NoMelt experiment in 70 Ma Pacific seafloor, a previous analysis of coincident magnetotelluric (MT) data showed no evidence for anisotropy in...

    Authors: Tetsuo Matsuno and Rob. L. Evans

    Citation: Earth, Planets and Space 2017 69:138

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  26. Content type: Full paper

    After the arrival of Akatsuki spacecraft of Japan Aerospace Exploration Agency at Venus in December 2015, the radio occultation experiment, termed RS (Radio Science), obtained 19 vertical profiles of the Venus...

    Authors: Takeshi Imamura, Hiroki Ando, Silvia Tellmann, Martin Pätzold, Bernd Häusler, Atsushi Yamazaki, Takao M. Sato, Katsuyuki Noguchi, Yoshifumi Futaana, Janusz Oschlisniok, Sanjay Limaye, R. K. Choudhary, Yasuhiro Murata, Hiroshi Takeuchi, Chikako Hirose, Tsutomu Ichikawa…

    Citation: Earth, Planets and Space 2017 69:137

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  27. Content type: Full paper

    The 1703 Genroku Kanto earthquake and the resulting tsunami caused catastrophic damage in the Kanto region of Japan. Previous modeling of the 1703 earthquake applied inversion analyses of the observed terrestr...

    Authors: Hideaki Yanagisawa and Kazuhisa Goto

    Citation: Earth, Planets and Space 2017 69:136

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  28. Content type: Express Letter

    The performance of Gravity field and steady-state Ocean Circulation Explorer (GOCE) global gravity field models (GGMs), at the end of GOCE mission covering 42 months, is evaluated using geoid undulations and f...

    Authors: Patroba Achola Odera and Yoichi Fukuda

    Citation: Earth, Planets and Space 2017 69:135

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  29. Content type: Full paper

    The aim of this paper is to investigate the ability of various site-condition proxies (SCPs) to reduce ground-motion aleatory variability and evaluate how SCPs capture nonlinearity site effects. The SCPs used ...

    Authors: Boumédiène Derras, Pierre-Yves Bard and Fabrice Cotton

    Citation: Earth, Planets and Space 2017 69:133

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  30. Content type: Full paper

    In Taiwan, the Nantou area is a seismically active region where several moderate events have occurred, causing some disasters during the past century. Here, we applied the strong ground motion simulation with...

    Authors: Yi-Ying Wen, Shen-Yu Chao, Yin-Tung Yen and Strong Wen

    Citation: Earth, Planets and Space 2017 69:132

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  31. Content type: Full paper

    Understanding the effect of the complex fault geometry on the dynamic rupture process and discriminating it from the complexity originating from the rheological properties of faults, is an essential subject in...

    Authors: Ryosuke Ando, Kazutoshi Imanishi, Yannis Panayotopoulos and Tomokazu Kobayashi

    Citation: Earth, Planets and Space 2017 69:130

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  32. Content type: Frontier Letter

    We report on the large-scale evolution of dipolarization in the near-Earth plasma sheet during an intense (AL ~ −1000 nT) substorm on August 10, 2016, when multiple spacecraft at radial distances between 4 and...

    Authors: Rumi Nakamura, Tsugunobu Nagai, Joachim Birn, Victor A. Sergeev, Olivier Le Contel, Ali Varsani, Wolfgang Baumjohann, Takuma Nakamura, Sergey Apatenkov, Anton Artemyev, Robert E. Ergun, Stephen A. Fuselier, Daniel J. Gershman, Barbara J. Giles, Yuri V. Khotyaintsev, Per-Arne Lindqvist…

    Citation: Earth, Planets and Space 2017 69:129

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  33. Content type: Express Letter

    Graphite-bearing polycrystalline olivine and polycrystalline clinopyroxene with submicron to micron grain size were successfully sintered from a single crystal of naturally occurring olivine (Fo88–92Fa12–8: Mg1.7...

    Authors: Yumiko Tsubokawa and Masahiro Ishikawa

    Citation: Earth, Planets and Space 2017 69:128

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  34. Content type: Express Letter

    The source rupture process of the 2016 central Tottori, Japan, earthquake (M JMA 6.6) was estimated from strong motion waveforms using a multiple-time-window kinematic waveform inversion. ...

    Authors: Hisahiko Kubo, Wataru Suzuki, Shin Aoi and Haruko Sekiguchi

    Citation: Earth, Planets and Space 2017 69:127

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  35. Content type: Full paper

    Although rotational seismology has progressed in recent decades, the links between rotational ground motion and site soil conditions are poorly documented. New experiments were performed on Kefalonia Island (G...

    Authors: Sarah Sbaa, Fabrice Hollender, Vincent Perron, Afifa Imtiaz, Pierre-Yves Bard, Armand Mariscal, Alain Cochard and Alain Dujardin

    Citation: Earth, Planets and Space 2017 69:124

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  36. Content type: Full paper

    Combining geometrical optics (GO) and wave optics (WO), the COSMIC data analysis and archive center (CDAAC) retrieved two sets of dry atmosphere temperatures (T) from COSMIC GPS radio occultation (GPS-RO), which ...

    Authors: Noersomadi and Toshitaka Tsuda

    Citation: Earth, Planets and Space 2017 69:125

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  37. Content type: Full paper

    The water-group ion cyclotron waves (ICWs) in Saturn’s magnetosphere were studied using the magnetic field data provided by the MAG magnetometer on board the Cassini satellite. The period from January 2005 to ...

    Authors: Marty Chou and Chio Zong Cheng

    Citation: Earth, Planets and Space 2017 69:122

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    The Correction to this article has been published in Earth, Planets and Space 2017 69:148

  38. Content type: Express Letter

    We estimated the location and magnitude of earthquakes constituting the 1858 earthquake swarm in the central Ryukyu Islands using the felt earthquakes recorded by Father Louis Furet who lived in Naha, Okinawa ...

    Authors: Takuma Oda and Mamoru Nakamura

    Citation: Earth, Planets and Space 2017 69:121

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