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5. Volcanology

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  1. Previous studies of the major eruption at Shinmoe-dake volcano, Japan, in January 2011 suggested that gradual injection of magma from a deep source into a shallow reservoir began in December 2009 and led to th...

    Authors: Ken’ichi Yamazaki, Yusuke Yamashita and Shintaro Komatsu

    Citation: Earth, Planets and Space 2020 72:83

    Content type: Full paper

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  2. Nevado del Ruiz Volcano (NRV) had a phreatomagmatic eruption in 1985. The eruption partially melted the volcano’s ice cap leading to floods and lahars flowing down to nearby towns, which killed at least 25,000...

    Authors: Lina Marcela Castaño, Carlos Alberto Ospina, Oscar Ernesto Cadena, Beatriz Galvis-Arenas, John Makario Londono, Carlos Andrés Laverde, Takayuki Kaneko and Mie Ichihara

    Citation: Earth, Planets and Space 2020 72:81

    Content type: Full paper

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  3. A sequence of eruptions in the lower East Rift Zone (LERZ) of the Kilauea, Hawaii volcano commenced in early May 2018 and caused serious damage and residential evacuation. The post-eruption drainage and collap...

    Authors: Kuan-Fu Feng, Hsin-Hua Huang and Yih-Min Wu

    Citation: Earth, Planets and Space 2020 72:74

    Content type: Full paper

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  4. Kusatsu–Shirane Volcano is an active Quaternary andesitic-to-dacitic volcano located in the Central Japan Arc. We conducted a detailed petrological investigation of orthopyroxene (opx)–magnetite (mt) symplecti...

    Authors: Kenta Ueki, Mutsuko Inui, Kenta Matsunaga, Naoya Okamoto and Kazuki Oshio

    Citation: Earth, Planets and Space 2020 72:68

    Content type: Full paper

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  5. We investigated the magmatic–hydrothermal system of Aso Volcano, Japan, using broadband magnetotelluric (MT) data. To establish the nature of the shallow crust, a previous resistivity model based on data from ...

    Authors: Nobuo Matsushima, Mitsuru Utsugi, Shinichi Takakura, Tadashi Yamasaki, Maki Hata, Takeshi Hashimoto and Makoto Uyeshima

    Citation: Earth, Planets and Space 2020 72:57

    Content type: Full paper

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  6. The phreatic eruption of Mount Ontake in 2014 caused local-scale subsidence and a mass discharge of water–vapor plumes from vents. A previous study of InSAR data analysis modeled the local subsidence as a defl...

    Authors: Shohei Narita, Makoto Murakami and Ryo Tanaka

    Citation: Earth, Planets and Space 2019 71:145

    Content type: Full paper

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    The Correction to this article has been published in Earth, Planets and Space 2020 72:17

  7. Nishinoshima volcano suddenly resumed eruptive activity in April 2017 after about 1.5 years of dormancy since its previous activity in 2013–2015. Nishinoshima is an uninhabited isolated island. We analyzed the...

    Authors: Takayuki Kaneko, Fukashi Maeno, Atsushi Yasuda, Minoru Takeo and Kenji Takasaki

    Citation: Earth, Planets and Space 2019 71:140

    Content type: Full paper

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  8. On June 29, 2015, a small phreatic eruption occurred in the most intensively steaming area of Hakone volcano, Japan. A previous magnetotelluric survey for the whole volcano revealed that the eruption center ar...

    Authors: Kazutaka Mannen, Toshikazu Tanada, Akira Jomori, Takashi Akatsuka, George Kikugawa, Yui Fukazawa, Hiroyuki Yamashita and Koichiro Fujimoto

    Citation: Earth, Planets and Space 2019 71:135

    Content type: Full paper

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  9. This study examined the frequency-size distribution of 6117 landslides spread over 440 km2 in Iburi Subprefecture, Hokkaido, Japan, induced by the Hokkaido Eastern Iburi Earthquake (Mw 6.6) on September 6, 2018. ...

    Authors: Mio Kasai and Takashi Yamada

    Citation: Earth, Planets and Space 2019 71:89

    Content type: Full paper

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  10. 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

    Content type: Full paper

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  11. 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

    Content type: Frontier letter

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  12. 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

    Content type: Express Letter

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  13. 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

    Content type: Full paper

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  14. 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

    Content type: Full paper

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  15. 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

    Content type: Express Letter

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  16. 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

    Content type: Full paper

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  17. 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

    Content type: Full paper

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  18. 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

    Content type: Express Letter

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  19. 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

    Content type: Full paper

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  20. 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

    Content type: Express Letter

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  21. 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

    Content type: Express Letter

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  22. 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

    Content type: Full paper

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  23. 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

    Content type: Full paper

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  24. 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

    Content type: Express Letter

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  25. 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

    Content type: Full paper

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  26. 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

    Content type: Express Letter

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

  27. 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

    Content type: Full paper

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  28. 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

    Content type: Full paper

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  29. 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

    Content type: Full paper

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  30. 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

    Content type: Express Letter

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  31. 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

    Content type: Full paper

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  32. 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

    Content type: Full paper

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  33. 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

    Content type: Express Letter

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  34. 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

    Content type: Full paper

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  35. 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

    Content type: Full paper

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  36. 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

    Content type: Full paper

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  37. 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

    Content type: Full paper

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  38. 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

    Content type: Frontier letter

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  39. 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

    Content type: Express Letter

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  40. 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

    Content type: Express Letter

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  41. 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

    Content type: Express Letter

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  42. 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

    Content type: Full paper

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  43. 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

    Content type: Express Letter

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