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5. Volcanology

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  1. A hot and acid crater lake is located in the Nakadake crater, Aso volcano, Japan. The volume of water in the lake decreases with increasing activity, drying out prior to the magmatic eruptions. Salt-rich mater...

    Authors: Hiroshi Shinohara, Nobuo Geshi, Akihiko Yokoo, Takahiro Ohkura and Akihiko Terada
    Citation: Earth, Planets and Space 2018 70:46
  2. Tenerife has been the subject of numerous studies covering a wide range of fields. Many studies have been focused on characterising the magmatic plumbing system. Even so, a controversy still exists regarding t...

    Authors: Perla Piña-Varas, Juanjo Ledo, Pilar Queralt, Alex Marcuello and Nemesio Perez
    Citation: Earth, Planets and Space 2018 70:14
  3. We analyzed campaign Global Positioning System observation data in Kuchinoerabu-jima during 2006–2014. Most benchmarks located around Shin-dake crater showed crater-centered radial horizontal displacements. Ho...

    Authors: Kohei Hotta and Masato Iguchi
    Citation: Earth, Planets and Space 2017 69:173
  4. 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
  5. 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
  6. A series of uplifts and subsidences of a volcanic complex in the Kussharo caldera in eastern Hokkaido (Japan) has been revealed by interferometric analysis using archived satellite synthetic aperture radar dat...

    Authors: Satoshi Fujiwara, Makoto Murakami, Takuya Nishimura, Mikio Tobita, Hiroshi Yarai and Tomokazu Kobayashi
    Citation: Earth, Planets and Space 2017 69:78
  7. We investigate a volcanic hydrothermal system by using numerical simulation with three key observables as reference: the magnetic total field, vent temperature, and heat flux. We model the shallow hydrothermal...

    Authors: Ryo Tanaka, Takeshi Hashimoto, Nobuo Matsushima and Tsuneo Ishido
    Citation: Earth, Planets and Space 2017 69:39
  8. Mount Ontake erupted at 11:52 am on September 27, 2014, which generated pyroclastic density currents, ballistic projectiles, ash falls, and a small-scale lahar that spouted directly from craters formed by the ...

    Authors: Hisashi Sasaki, Tatsuro Chiba, Hiroshi Kishimoto and Shino Naruke
    Citation: Earth, Planets and Space 2016 68:141
  9. The total mass discharged by the phreatic eruption of Ontake Volcano, central Japan, on September 27, 2014, was estimated using several methods. The estimated discharged mass was 1.2 × 106 t (segment integration ...

    Authors: Shinji Takarada, Teruki Oikawa, Ryuta Furukawa, Hideo Hoshizumi, Jun’ichi Itoh, Nobuo Geshi and Isoji Miyagi
    Citation: Earth, Planets and Space 2016 68:138
  10. 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 2016 68:125

    The Correction to this article has been published in Earth, Planets and Space 2017 69:143

  11. The 2014 Mount Ontake eruption started just before noon on September 27, 2014. It killed 58 people, and five are still missing (as of January 1, 2016). The casualties were mainly caused by the impact of ballis...

    Authors: Kae Tsunematsu, Yasuhiro Ishimine, Takayuki Kaneko, Mitsuhiro Yoshimoto, Toshitsugu Fujii and Koshun Yamaoka
    Citation: Earth, Planets and Space 2016 68:88
  12. The phreatic eruption at Ontake volcano on 27 September 2014, which caused the worst volcanic disaster in the past half-century in Japan, was reconstructed based on observations of the proximal pyroclastic den...

    Authors: Fukashi Maeno, Setsuya Nakada, Teruki Oikawa, Mitsuhiro Yoshimoto, Jiro Komori, Yoshihiro Ishizuka, Yoshihiro Takeshita, Taketo Shimano, Takayuki Kaneko and Masashi Nagai
    Citation: Earth, Planets and Space 2016 68:82
  13. A phreatic eruption at Mount Ontake (3067 m) on September 27, 2014, led to 64 casualties, including missing people. In this paper, we clarify the eruption sequence of the 2014 eruption from recorded images (ph...

    Authors: Teruki Oikawa, Mitsuhiro Yoshimoto, Setsuya Nakada, Fukashi Maeno, Jiro Komori, Taketo Shimano, Yoshihiro Takeshita, Yoshihiro Ishizuka and Yasuhiro Ishimine
    Citation: Earth, Planets and Space 2016 68:79
  14. We present observations of ground deformation at Sakurajima in August 2015 and model the deformation using a combination of GNSS, tilt and strain data in order to interpret a rapid deformation event on August ...

    Authors: Kohei Hotta, Masato Iguchi and Takeshi Tameguri
    Citation: Earth, Planets and Space 2016 68:68
  15. The volcanic ash of the eruption on September 27, 2014 at Ontake volcano consists mostly of altered rock fragments. The ash contains partly altered volcanic rock fragments consisting of primary igneous mineral...

    Authors: Yusuke Minami, Takumi Imura, Shintaro Hayashi and Tsukasa Ohba
    Citation: Earth, Planets and Space 2016 68:67
  16. A phreatic eruption of Mt. Ontake, Japan, started abruptly on September 27, 2014, and caused the worst volcanic calamity in recent 70 years in Japan. We conducted volcanic plume surveys using an electric multi...

    Authors: Toshiya Mori, Takeshi Hashimoto, Akihiko Terada, Mitsuhiro Yoshimoto, Ryunosuke Kazahaya, Hiroshi Shinohara and Ryo Tanaka
    Citation: Earth, Planets and Space 2016 68:49
  17. Volcanic activity generally causes crustal deformation, which sometimes induces groundwater changes, and both of these phenomena are sometimes detected before volcanic eruptions. Therefore, investigations of c...

    Authors: Naoji Koizumi, Tsutomu Sato, Yuichi Kitagawa and Tadafumi Ochi
    Citation: Earth, Planets and Space 2016 68:48
  18. Nondestructive magnetic detection of tephra layers in ice cores will be an important method to identify and correlate stratigraphic horizons of ice bearing volcanic ash particles. Volcanic ash particles were ...

    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 2016 68:39

    The Correction to this article has been published in Earth, Planets and Space 2017 69:139

  19. Preparatory activity preceding the 2014 eruption of Mount Ontake volcano was estimated from vertical deformation detected using a precise leveling survey. Notable uplift (2006–2009) and subsidence (2009–2014) ...

    Authors: Masayuki Murase, Fumiaki Kimata, Yoshiko Yamanaka, Shinichiro Horikawa, Kenjiro Matsuhiro, Takeshi Matsushima, Hitoshi Mori, Takahiro Ohkura, Shin Yoshikawa, Rikio Miyajima, Hiroyuki Inoue, Taketoshi Mishima, Tadaomi Sonoda, Kazunari Uchida, Keigo Yamamoto and Harushisa Nakamichi
    Citation: Earth, Planets and Space 2016 68:9
  20. On 27 September 2014, Ontake volcano, in central Japan, suddenly erupted without precursory activity. We estimated and tracked the source locations of volcanic tremor associated with the eruption at high tempo...

    Authors: Masashi Ogiso, Hirotoshi Matsubayashi and Tetsuya Yamamoto
    Citation: Earth, Planets and Space 2015 67:206
  21. The phreatic eruption of Mt. Ontake in 2014 was preceded for 25 s by a very long period (VLP) seismic event recorded at one broadband and three short-period seismic stations located within 5000 m of the summit...

    Authors: Yuta Maeda, Aitaro Kato, Toshiko Terakawa, Yoshiko Yamanaka, Shinichiro Horikawa, Kenjiro Matsuhiro and Takashi Okuda
    Citation: Earth, Planets and Space 2015 67:187
  22. We studied the origin of deep groundwater in the Joban and Hamadori areas in southern Tohoku, Japan, based on δD, δ18O, 129I/I, 36Cl/Cl, and 3H concentrations. Deep groundwater was collected from the basement roc...

    Authors: Yoko S Togo, Kohei Kazahaya, Yuki Tosaki, Noritoshi Morikawa, Hiroyuki Matsuzaki, Masaaki Takahashi and Tsutomu Sato
    Citation: Earth, Planets and Space 2014 66:131
  23. Multiple observations of subsurface and surface phenomena during volcanic eruptions provide important information about eruption styles, eruption column dynamics, and magma plumbing systems. During the 2011 er...

    Authors: Tomofumi Kozono, Hideki Ueda, Toshiki Shimbori and Keiichi Fukui
    Citation: Earth, Planets and Space 2014 66:139
  24. The variation in water content of arc basaltic magmas in the Northeast Japan arc and the Izu arc was estimated using a simple plagioclase phenocryst hygrometer. In order to construct a plagioclase phenocryst h...

    Authors: Masashi Ushioda, Eiichi Takahashi, Morihisa Hamada and Toshihiro Suzuki
    Citation: Earth, Planets and Space 2014 66:127
  25. Non-volcanic hot springs are generally believed to originate through circulation of meteoric or buried sea water heated at depth. In this study, we report the geochemical characteristics of the Arima and Takar...

    Authors: Chiho Kusuda, Hikaru Iwamori, Hitomi Nakamura, Kohei Kazahaya and Noritoshi Morikawa
    Citation: Earth, Planets and Space 2014 66:119
  26. The composition of continental subduction-zone fluids varies dramatically from dilute aqueous solutions at subsolidus conditions to hydrous silicate melts at supersolidus conditions, with variable concentratio...

    Authors: Yong-Fei Zheng and Joerg Hermann
    Citation: Earth, Planets and Space 2014 66:93
  27. Geochemical signatures of arc basalts can be explained by addition of aqueous fluids, melts, and/or supercritical fluids from the subducting slab to the sub-arc mantle. Partitioning of large-ion lithophile ele...

    Authors: Tatsuhiko Kawamoto, Kenji Mibe, Hélène Bureau, Solenn Reguer, Cristian Mocuta, Stefan Kubsky, Dominique Thiaudière, Shigeaki Ono and Tetsu Kogiso
    Citation: Earth, Planets and Space 2014 66:61
  28. Titanian clinohumite is an accessory phase found in peridotites, and it can be a key repository of volatile and other trace elements in sub-arc mantle. To characterize spectroscopic variations due to volatile ...

    Authors: Kenneth T Koga, Carlos J Garrido, José A Padrón-Navarta, Vicente López Sánchez-Vizcaíno and María T Gómez-Pugnaire
    Citation: Earth, Planets and Space 2014 66:60
  29. First testing of volcanic activity monitoring with a system of continuously operatable seismic sources, named ACROSS, was started at Sakurajima Volcano, Japan. Two vibrators were deployed on the northwestern f...

    Authors: Koshun Yamaoka, Hiroki Miyamachi, Toshiki Watanabe, Takahiro Kunitomo, Tsuyoshi Michishita, Ryoya Ikuta and Masato Iguchi
    Citation: Earth, Planets and Space 2014 66:32
  30. We performed melting experiments of hydrous pyrolite at pressures from 3 to 8 GPa and temperatures from 1,100°C to 1,800°C to identify the origin of chemical variation in cratonic garnet peridotites with high ...

    Authors: Kyoko N Matsukage and Toshisuke Kawasaki
    Citation: Earth, Planets and Space 2014 66:29
  31. Island arc low-K tholeiites are basaltic magmas erupting from frontal arc volcanoes of juvenile arcs associated with the subduction of old and cold plates. We investigated the origins of geochemical variation ...

    Authors: Morihisa Hamada, Yuko Okayama, Takayuki Kaneko, Atsushi Yasuda and Toshitsugu Fujii
    Citation: Earth, Planets and Space 2014 66:15
  32. We applied the Markov random field model, which is a kind of a Bayesian probabilistic method, to the spatial inversion of the porosity and pore shape in rocks from an observed seismic structure. Gaussian Marko...

    Authors: Tatsu Kuwatani, Kenji Nagata, Masato Okada and Mitsuhiro Toriumi
    Citation: Earth, Planets and Space 2014 66:5
  33. The electrical conductivity of brine-bearing quartzite with fluid fractions of 0.19 to 0.30 and salinity of 3 to 17 wt.% was measured at 800 to 1,100 K and 1 GPa. The conductivity of the brine-bearing quartzit...

    Authors: Akira Shimojuku, Takashi Yoshino and Daisuke Yamazaki
    Citation: Earth, Planets and Space 2014 66:2

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