5. Volcanology

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  1. Letter

    Mineralogical study on volcanic ash of the eruption on September 27, 2014 at Ontake volcano, central Japan: correlation with porphyry copper systems

    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...

    Yusuke Minami, Takumi Imura, Shintaro Hayashi and Tsukasa Ohba

    Earth, Planets and Space 2016 68:67

    Published on: 26 April 2016

  2. Full paper

    Volcanic plume measurements using a UAV for the 2014 Mt. Ontake eruption

    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...

    Toshiya Mori, Takeshi Hashimoto, Akihiko Terada, Mitsuhiro Yoshimoto, Ryunosuke Kazahaya, Hiroshi Shinohara and Ryo Tanaka

    Earth, Planets and Space 2016 68:49

    Published on: 22 March 2016

  3. Full paper

    Volcanic ash in bare ice south of Sør Rondane Mountains, Antarctica: geochemistry, rock magnetism and nondestructive magnetic detection with SQUID gradiometer

    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 ...

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

    Earth, Planets and Space 2016 68:39

    Published on: 9 March 2016

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

  4. Full paper

    Preparatory process preceding the 2014 eruption of Mount Ontake volcano, Japan: insights from precise leveling measurements

    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) ...

    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

    Earth, Planets and Space 2016 68:9

    Published on: 22 January 2016

  5. Letter

    Earth’s rotation variability triggers explosive eruptions in subduction zones

    The uneven Earth’s spinning has been reported to affect geological processes, i.e. tectonism, seismicity and volcanism, on a planetary scale. Here, we show that changes of the length of day (LOD) influence eru...

    Gianluca Sottili, Danilo M. Palladino, Marco Cuffaro and Carlo Doglioni

    Earth, Planets and Space 2015 67:208

    Published on: 30 December 2015

  6. Letter

    Source mechanism of a VLP event immediately before the 2014 eruption of Mt. Ontake, Japan

    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...

    Yuta Maeda, Aitaro Kato, Toshiko Terakawa, Yoshiko Yamanaka, Shinichiro Horikawa, Kenjiro Matsuhiro and Takashi Okuda

    Earth, Planets and Space 2015 67:187

    Published on: 24 November 2015

  7. Full paper

    Groundwater, possibly originated from subducted sediments, in Joban and Hamadori areas, southern Tohoku, Japan

    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...

    Yoko S Togo, Kohei Kazahaya, Yuki Tosaki, Noritoshi Morikawa, Hiroyuki Matsuzaki, Masaaki Takahashi and Tsutomu Sato

    Earth, Planets and Space 2014 66:131

    Published on: 20 October 2014

  8. Letter

    Water content in arc basaltic magma in the Northeast Japan and Izu arcs: an estimate from Ca/Na partitioning between plagioclase and melt

    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...

    Masashi Ushioda, Eiichi Takahashi, Morihisa Hamada and Toshihiro Suzuki

    Earth, Planets and Space 2014 66:127

    Published on: 29 September 2014

  9. Full paper

    Arima hot spring waters as a deep-seated brine from subducting slab

    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...

    Chiho Kusuda, Hikaru Iwamori, Hitomi Nakamura, Kohei Kazahaya and Noritoshi Morikawa

    Earth, Planets and Space 2014 66:119

    Published on: 19 September 2014

  10. Frontier letter

    Geochemistry of continental subduction-zone fluids

    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...

    Yong-Fei Zheng and Joerg Hermann

    Earth, Planets and Space 2014 66:93

    Published on: 18 August 2014

  11. Full paper

    Large-ion lithophile elements delivered by saline fluids to the sub-arc mantle

    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...

    Tatsuhiko Kawamoto, Kenji Mibe, Hélène Bureau, Solenn Reguer, Cristian Mocuta, Stefan Kubsky, Dominique Thiaudière, Shigeaki Ono and Tetsu Kogiso

    Earth, Planets and Space 2014 66:61

    Published on: 27 June 2014

  12. Letter

    FTIR and Raman spectroscopy characterization of fluorine-bearing titanian clinohumite in antigorite serpentinite and chlorite harzburgite

    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 ...

    Kenneth T Koga, Carlos J Garrido, José A Padrón-Navarta, Vicente López Sánchez-Vizcaíno and María T Gómez-Pugnaire

    Earth, Planets and Space 2014 66:60

    Published on: 26 June 2014

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