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5. Volcanology

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  1. Definite increases in the components ratios of CO2/H2O, CO2/H2S, CO2/CH4 and He/CH4 were observed at the fumarolic gases from Owakudani geothermal area located at the center of Hakone volcanic caldera (Honshu Isl...

    Authors: Takeshi Ohba, Muga Yaguchi, Kana Nishino, Nozomi Numanami, Yasushi Daita, Chiho Sukigara, Masanori Ito and Urumu Tsunogai
    Citation: Earth, Planets and Space 2019 71:48
  2. The 2014–2015 eruption of the Nakadake first crater at Aso Volcano in southwestern Japan was characterized by continuous ash emissions and intermittent strombolian eruptions. In this paper, we present the dist...

    Authors: Yasuo Miyabuchi and Chihoko Hara
    Citation: Earth, Planets and Space 2019 71:44
  3. During the past two decades, studies of the Aso volcano in Japan have improved our understanding of the shallow hydrothermal system that exists beneath the active crater of this volcano. Detailed knowledge of ...

    Authors: Wataru Kanda, Mitsuru Utsugi, Shinichi Takakura and Hiroyuki Inoue
    Citation: Earth, Planets and Space 2019 71:37
  4. On 27 April 2016, White Island erupted in a multi-pulse, phreatic event that lasted for ~ 40 min. Six, variably sized pulses generated three ballistic ejections and at least one pyroclastic surge out of the in...

    Authors: Geoff Kilgour, Stephanie Gates, Ben Kennedy, Aaron Farquhar, Ame McSporran and Cameron Asher
    Citation: Earth, Planets and Space 2019 71:36
  5. At approximately 09:36 UTC on 27 April 2016, a phreatic eruption occurred on Whakaari Island (White Island) producing an eruption sequence that contained multiple eruptive pulses determined to have occurred ov...

    Authors: Braden Walsh, Jonathan Procter, Ivan Lokmer, Johannes Thun, Tony Hurst, Bruce Christenson and Arthur Jolly
    Citation: Earth, Planets and Space 2019 71:25
  6. The present contribution investigates the temporal changes in volcaniclastic sediment transport over the 2-year period after the 2014 eruption of Ontake Volcano in two small drainage basins where increased tur...

    Authors: Kyoko S. Kataoka, Takane Matsumoto, Takeshi Saito, Yoshitaka Nagahashi and Tsutomu Iyobe
    Citation: Earth, Planets and Space 2019 71:15
  7. Strombolian explosions are one of the most studied eruptive styles and are characterized by intermittent explosions. The mechanism of a Strombolian explosion is modeled as a large gas pocket (slug) migrating t...

    Authors: Kyoka Ishii, Akihiko Yokoo, Tsuneomi Kagiyama, Takahiro Ohkura, Shin Yoshikawa and Hiroyuki Inoue
    Citation: Earth, Planets and Space 2019 71:13
  8. Monochromatic infrasound waves are scarcely reported volcanic infrasound signals. These waves have the potential to provide constraints on the conduit geometry of a volcano. However, to further investigate the...

    Authors: Akihiko Yokoo, Kyoka Ishii, Takahiro Ohkura and Keehoon Kim
    Citation: Earth, Planets and Space 2019 71:12
  9. At many volcano observatories, measurements of the plume height are frequently applied. On the other hand, the recent development of the satellite measurements enables the monitoring of the SO2 mass emitted by th...

    Authors: Masaaki Morita
    Citation: Earth, Planets and Space 2019 71:7
  10. Continuous measurements of soil CO2 flux are useful for understanding degassing processes and for monitoring volcanic activities. Recent studies at many volcanoes have revealed that soil CO2 flux variations are s...

    Authors: Masaaki Morita, Toshiya Mori, Akihiko Yokoo, Takahiro Ohkura and Yuichi Morita
    Citation: Earth, Planets and Space 2019 71:1
  11. Rootless eruption is caused by lava flow entering inland water or wet sediment and forms craters and cones far from the actual vent. Since the rootless eruption can be significantly explosive, the possibility ...

    Authors: Rina Noguchi, Ai Hamada, Ayako I. Suzuki and Kei Kurita
    Citation: Earth, Planets and Space 2018 70:208
  12. When an explosive eruption, such as a Plinian eruption, occurs, in order to estimate ash fall around the volcano and for hazard mitigation, a numerical model is often used. Simulation by a numerical model need...

    Authors: Kensuke Ishii
    Citation: Earth, Planets and Space 2018 70:202
  13. Petrological observations and chemical analyses of melt inclusions in scoria were used to investigate the magma ascent and eruption processes of the 1979, 1989, and 2014 eruptions of Nakadake, Aso volcano, Jap...

    Authors: Genji Saito, Osamu Ishizuka, Yoshihiro Ishizuka, Hideo Hoshizumi and Isoji Miyagi
    Citation: Earth, Planets and Space 2018 70:197
  14. In 2014, a phreatic eruption occurred at the Ontake Volcano in Central Japan causing multiple deaths and missing persons. Interferometric Synthetic Aperture Radar data showed local-scale subsidence around the ...

    Authors: Shohei Narita and Makoto Murakami
    Citation: Earth, Planets and Space 2018 70:191
  15. We successfully monitored the ground deformation of an eruption center during the 2015 phreatic eruption of Hakone volcano, Japan, using ground-based interferometric synthetic aperture radar (GB-InSAR). GB-InS...

    Authors: Senro Kuraoka, Yuichi Nakashima, Ryosuke Doke and Kazutaka Mannen
    Citation: Earth, Planets and Space 2018 70:181
  16. The April 27, 2016 eruption sequence at White Island was comprised of 6 discrete eruptive events that occurred over a 35-min period. Seismicity included three episodes of VLP activity: the first occurring ~ 2 ...

    Authors: Arthur Jolly, Ivan Lokmer, Bruce Christenson and Johannes Thun
    Citation: Earth, Planets and Space 2018 70:177
  17. Volcanic eruptions bring high-temperature gas or magma to the surface. Therefore, thermal observations of volcanic eruptions can be used to investigate the timeline of eruptive sequences. Eruptive activity inc...

    Authors: Takayuki Kaneko, Atsushi Yasuda, Yoshito Yoshizaki, Kenji Takasaki and Yoshiaki Honda
    Citation: Earth, Planets and Space 2018 70:175

    The Correction to this article has been published in Earth, Planets and Space 2018 70:187

  18. Imaging the shallow velocity structures beneath Aso caldera is necessary to further understand volcanism at the volcano and in the region. The network for monitoring Aso volcano has been progressively renewed ...

    Authors: Yu-Chih Huang, Takahiro Ohkura, Tsuneomi Kagiyama, Shin Yoshikawa and Hiroyuki Inoue
    Citation: Earth, Planets and Space 2018 70:169
  19. This study investigates phreatic eruptions at two similar volcanoes, Kawah Ijen (Indonesia) and White Island (New Zealand). By carefully processing broadband seismic signals, we reveal seismic signatures and c...

    Authors: Corentin Caudron, Benoit Taisne, Jurgen Neuberg, Arthur D. Jolly, Bruce Christenson, Thomas Lecocq, Suparjan, Devy Syahbana and Gede Suantika
    Citation: Earth, Planets and Space 2018 70:168
  20. Typical eruptions of Taal Volcano in the Philippines are frequent and violently explosive. The last devastating phreatomagmatic eruption from 1965 to 1977 resulted in the death of about 200 persons. For this a...

    Authors: Jacques Zlotnicki, Y. Sasai, M. J. S. Johnston, F. Fauquet, E. Villacorte and J. M. Cordon Jr.
    Citation: Earth, Planets and Space 2018 70:159
  21. Global navigation satellite system data from Hakone volcano, central Japan, together with GEONET data from the Geospatial Information Authority of Japan, were used to investigate the processes associated with ...

    Authors: Masatake Harada, Ryosuke Doke, Kazutaka Mannen, Kazuhiro Itadera and Mikio Satomura
    Citation: Earth, Planets and Space 2018 70:152
  22. Volcanic gas composition measurement by Multi-GAS was repeated during the eruptive period in 2014–2015 as well as the quiet period preceding the eruption at Nakadake crater, Aso volcano. The eruptive activity ...

    Authors: Hiroshi Shinohara, Akihiko Yokoo and Ryunosuke Kazahaya
    Citation: Earth, Planets and Space 2018 70:151
  23. We performed a simultaneous survey of self-potential and plume turbidity using an autonomous underwater vehicle (AUV) above the Sunrise deposit in the Myojin Knoll caldera of the Izu-Ogasawara arc. A 10-m-long...

    Authors: Yoshifumi Kawada and Takafumi Kasaya
    Citation: Earth, Planets and Space 2018 70:142
  24. During the last magmatic eruption period of Aso volcano (November 2014 to May 2015), a controlled-source electromagnetic volcano monitoring experiment (ACTIVE) was conducted. Here, we interpret the temporal va...

    Authors: Takuto Minami, Mitsuru Utsugi, Hisashi Utada, Tsuneomi Kagiyama and Hiroyuki Inoue
    Citation: Earth, Planets and Space 2018 70:138
  25. The most recent and largest caldera-forming eruption occurred at ~ 90 ka at Aso Volcano, SW Japan, and is known as the “Aso-4 eruption.” We performed chemical analyses of amphibole phenocrysts from Aso-4 pyroc...

    Authors: Hidemi Ishibashi, Yukiko Suwa, Masaya Miyoshi, Atsushi Yasuda and Natsumi Hokanishi
    Citation: Earth, Planets and Space 2018 70:137
  26. Volcanic tremor is often observed to be associated with an increase in volcanic activity and during periods approaching eruptions. It is therefore of crucial importance to study this phenomenon. The opening of...

    Authors: Misa Ichimura, Akihiko Yokoo, Tsuneomi Kagiyama, Shin Yoshikawa and Hiroyuki Inoue
    Citation: Earth, Planets and Space 2018 70:125
  27. The 2015 unrest of the Hakone volcano in Japan, which began on April 26, generated earthquake swarms accompanied by long-term deformation. The earthquake swarm activity reached its maximum in mid-May and gradu...

    Authors: Ryou Honda, Yohei Yukutake, Yuichi Morita, Shin’ichi Sakai, Kazuhiro Itadera and Kazuya Kokubo
    Citation: Earth, Planets and Space 2018 70:117
  28. In association with the September 2014 phreatic eruption (VEI 1–2) at Ontake Volcano, a syn-eruptive and two post-eruptive lahars occurred in the Akagawa–Nigorigawa River, southern flank of the volcano. The pr...

    Authors: Kyoko S. Kataoka, Takane Matsumoto, Takeshi Saito, Katsuhisa Kawashima, Yoshitaka Nagahashi, Tsutomu Iyobe, Akihiko Sasaki and Keisuke Suzuki
    Citation: Earth, Planets and Space 2018 70:113
  29. A simple and rapid technique to effectively remove volcanic smoke (vapor-dominated white plume) from visible or thermal infrared images of active craters is proposed, in which multiple photographs taken in a f...

    Authors: Takeshi Hashimoto, Akihiko Terada and Ryo Tanaka
    Citation: Earth, Planets and Space 2018 70:109
  30. We herein estimated the end of the ongoing deflation at Sinabung volcano, Indonesia, which began in 2014 under the assumption that the magma is incompressible and behaves as a Bingham fluid. At first, we estim...

    Authors: Kohei Hotta, Masato Iguchi, Takahiro Ohkura, Muhamad Hendrasto, Hendra Gunawan, Umar Rosadi and Estu Kriswati
    Citation: Earth, Planets and Space 2018 70:107
  31. An explosive eruption occurred at the Naka-dake first crater of Aso volcano at 1:46 on October 8, 2016 (JST). According to the field survey conducted by Kumamoto University, Kyoto University, the National Inst...

    Authors: Eiichi Sato, Keiichi Fukui and Toshiki Shimbori
    Citation: Earth, Planets and Space 2018 70:105
  32. Volcanic activity involves processes that can change over short periods of time, which are sometimes closely related to the eruptive mode or the timing of its transitions. Eruptions bring high-temperature magm...

    Authors: Takayuki Kaneko, Kenji Takasaki, Fukashi Maeno, Martin J. Wooster and Atsushi Yasuda
    Citation: Earth, Planets and Space 2018 70:89
  33. We investigate a volcanic hydrothermal system using numerical simulations, focusing on change in crater temperature. Both increases and decreases in crater temperature have been observed before phreatic erupti...

    Authors: Ryo Tanaka, Takeshi Hashimoto, Nobuo Matsushima and Tsuneo Ishido
    Citation: Earth, Planets and Space 2018 70:72
  34. The 2015 eruption of Hakone volcano was a very small phreatic eruption, with total erupted ash estimated to be in the order of only 102 m3 and ballistic blocks reaching less than 30 m from the vent. Precursors, ...

    Authors: Kazutaka Mannen, Yohei Yukutake, George Kikugawa, Masatake Harada, Kazuhiro Itadera and Jun Takenaka
    Citation: Earth, Planets and Space 2018 70:68
  35. The thermal signature of Aso Volcano (Nakadake) during unrest episodes has been analyzed by combining the MODIS-MIROVA data set (2000–2017) with high-resolution images (LANDSAT 8 OLI and Sentinel 2) and ground...

    Authors: Corrado Cigolini, Diego Coppola, Akihiko Yokoo and Marco Laiolo
    Citation: Earth, Planets and Space 2018 70:67
  36. On 29 June 2015, a small phreatic eruption occurred at Hakone volcano, Central Japan, forming several vents in the Owakudani geothermal area on the northern slope of the central cones. Intense earthquake swarm...

    Authors: Ryokei Yoshimura, Yasuo Ogawa, Yohei Yukutake, Wataru Kanda, Shogo Komori, Hideaki Hase, Tada-nori Goto, Ryou Honda, Masatake Harada, Tomoya Yamazaki, Masato Kamo, Shingo Kawasaki, Tetsuya Higa, Takeshi Suzuki, Yojiro Yasuda, Masanori Tani…
    Citation: Earth, Planets and Space 2018 70:66
  37. Remote sampling of water from Yugama crater lake at Kusatsu-Shirane volcano, Japan, was performed using a drone. Despite the high altitude of over 2000 m above sea level, our simple method was successful in re...

    Authors: Akihiko Terada, Yuichi Morita, Takeshi Hashimoto, Toshiya Mori, Takeshi Ohba, Muga Yaguchi and Wataru Kanda
    Citation: Earth, Planets and Space 2018 70:64
  38. Although the 2015 Hakone Volcano eruption was a small-scale phreatic eruption with a discharged mass of only about 100 tons, interferometric synthetic aperture radar successfully detected surface deformations ...

    Authors: Ryosuke Doke, Masatake Harada, Kazutaka Mannen, Kazuhiro Itadera and Jun Takenaka
    Citation: Earth, Planets and Space 2018 70:63
  39. 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
  40. 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
  41. 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
  42. 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
  43. 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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