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5. Volcanology

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  1. We conducted waveform inversions of an ultra-long-period (~ 240-s) event associated with the phreatic eruption of Mount Kusatsu–Shirane on January 23, 2018. We used broadband seismic and tilt records from thre...

    Authors: Ryohei Takahashi, Yuta Maeda and Toshiki Watanabe
    Citation: Earth, Planets and Space 2022 74:85
  2. Magnetic petrological investigations were conducted on the pumice fall deposits of the 1783 eruption of Asama volcano to examine relationships between bulk magnetic properties and petrological features related...

    Authors: Tatsuo Kanamaru, Kuniyuki Furukawa, Xiangyu Zhao and Yusuke Suganuma
    Citation: Earth, Planets and Space 2022 74:53
  3. In December 2019, a new activity started at Nishinoshima volcano in the southern part of the Izu–Ogasawara arc, Japan. This is now referred to as Episode 4 of a series of activities that began in 2013. We anal...

    Authors: Takayuki Kaneko, Fukashi Maeno, Mie Ichihara, Atsushi Yasuda, Takao Ohminato, Kenji Nogami, Setsuya Nakada, Yoshiaki Honda and Hiroshi Murakami
    Citation: Earth, Planets and Space 2022 74:34
  4. We modeled the vertical deformation detected from a leveling survey in Jigokudani valley, Tateyama volcano, central Japan. In Jigokudani valley, uplift of 4 cm/year was previously detected during the period fr...

    Authors: Kohei Hotta, Shigekazu Kusumoto, Hidenori Takahashi and Yuichi S. Hayakawa
    Citation: Earth, Planets and Space 2022 74:32
  5. The activity of the 20182019 eruption of Kuchinoerabujima Volcano in Japan changed from continuous ejection of ash-laden plumes between October 21 and the middle of December, to intermittent explosive activity a...

    Authors: Yusuke Minami, Keiko Matsumoto, Nobuo Geshi and Hiroshi Shinohara
    Citation: Earth, Planets and Space 2022 74:21
  6. Defining the variations in petrological characteristics of erupted magmas within a high-resolution chronostratigraphy provides a necessary framework for monitoring the long-term activity and eruption potential...

    Authors: Nobuo Geshi, Teruki Oikawa, Derek J. Weller and Chris E. Conway
    Citation: Earth, Planets and Space 2022 74:20
  7. Understanding seismic tremor wavefields can shed light on the complex functioning of a volcanic system and, thus, improve volcano monitoring systems. Usually, several seismic stations are required to detect, c...

    Authors: Ivan Melchor, Javier Almendros, Marcia Hantusch, Sergey Samsonov, Dominique Derauw, Enzo Martínez and Alberto Caselli
    Citation: Earth, Planets and Space 2022 74:3
  8. We performed zircon U–Pb dating on the Pliocene Tanigawa-dake granites (Makihata and Tanigawa bodies) and the Cretaceous Minakami quartzdiorite, Northeast Japan Arc. Concordia ages were estimated to be 3.95 ± ...

    Authors: Saki Minami, Mitsuhiro Nagata, Shigeru Sueoka, Shoma Fukuda, Yuya Kajita, Yasuhiro Ogita, Saya Kagami, Tatsunori Yokoyama and Takahiro Tagami
    Citation: Earth, Planets and Space 2021 73:231
  9. Ocean bottom electromagnetometers (OBEMs) installed on the seafloor around Nishinoshima Island (Bonin Islands) were missing after a December volcanic eruption. In February 2021, one was found on a beach on Iri...

    Authors: Noriko Tada, Haruka Nishikawa, Hiroshi Ichihara, Hiromi Kayama Watanabe and Tatsu Kuwatani
    Citation: Earth, Planets and Space 2021 73:224
  10. Two-thirds of the 111 active volcanoes in Japan are covered with snow for several months during winter and demonstrate high hazard and risk potentials associated with snow-related lahars during and after erupt...

    Authors: Kyoko S. Kataoka, Kae Tsunematsu, Takane Matsumoto, Atsushi Urabe and Katsuhisa Kawashima
    Citation: Earth, Planets and Space 2021 73:220
  11. The Whakaari/White Island volcano, located ~ 50 km off the east coast of the North Island in New Zealand, has experienced sequences of quiescence, unrest, magmatic and phreatic eruptions over the last decades....

    Authors: Corentin Caudron, Társilo Girona, Arthur Jolly, Bruce Christenson, Martha Kane Savage, Roberto Carniel, Thomas Lecocq, Ben Kennedy, Ivan Lokmer, Alexander Yates, Ian Hamling, Iseul Park, Geoff Kilgour and Agnès Mazot
    Citation: Earth, Planets and Space 2021 73:195
  12. A volcanic eruption transmits both seismic and infrasound signals. The seismo-acoustic power ratio is widely used to investigate the eruption behaviors and the source dynamics. It is often the case that seismi...

    Authors: Mie Ichihara, Kazuya Yamakawa and Dan Muramatsu
    Citation: Earth, Planets and Space 2021 73:180
  13. Volcano-hydrothermal systems are governed by complex interactions between fluid transport, and geochemical and mechanical processes. Evidence of this close interplay has been testified by distinct spatial and ...

    Authors: Santina Chiara Stissi, Rosalba Napoli, Gilda Currenti, Andrey Afanasyev and Giordano Montegrossi
    Citation: Earth, Planets and Space 2021 73:179
  14. Subvolcanic hydrothermal systems can lead to hydrothermal eruptions as well as unrest phenomena without an eruptive event. Historical eruptions and recent unrest events, including ground inflation, demagnetiza...

    Authors: Ryo Tanaka, Yusuke Yamaya, Makoto Tamura, Takeshi Hashimoto, Noritoshi Okazaki, Ryo Takahashi and Toru Mogi
    Citation: Earth, Planets and Space 2021 73:172
  15. We estimate the mass and energy budgets for the 2018 phreatic eruption of Mt. Motoshirane on Kusatsu–Shirane volcano, Japan, based on data obtained from a network of eight tiltmeters and weather radar echoes. ...

    Authors: Akihiko Terada, Wataru Kanda, Yasuo Ogawa, Taishi Yamada, Mare Yamamoto, Takahiro Ohkura, Hiroshi Aoyama, Tomoki Tsutsui and Shin’ya Onizawa
    Citation: Earth, Planets and Space 2021 73:157

    The Correction to this article has been published in Earth, Planets and Space 2021 73:184

  16. A volcanic ash eruption began on March 1, 2018, and a lava flow was observed on March 6 at Shinmoedake volcano in the Kirishima Volcano Group. The small ash eruptions continued until June 27, 2018. The amounts...

    Authors: Yasuhisa Tajima
    Citation: Earth, Planets and Space 2021 73:156
  17. Natural springs containing volcanic and magmatic components occur in association with these activities. However, features of deeply originated fluids and solutes were less documented from fields, where active ...

    Authors: Takahiro Hosono and Chikashige Yamanaka
    Citation: Earth, Planets and Space 2021 73:155
  18. An electrical resistivity model beneath Azumayama Volcano, NE Japan, is explored using magnetotelluric method to probe the magma/hydrothermal fluid distribution. Azumayama is one of the most concerning active ...

    Authors: Masahiro Ichiki, Toshiki Kaida, Takashi Nakayama, Satoshi Miura, Mare Yamamoto, Yuichi Morita and Makoto Uyeshima
    Citation: Earth, Planets and Space 2021 73:150
  19. Basaltic magma becomes more viscous, solid-like (elastic), and non-Newtonian (shear-thinning, non-zero yield stress) as its crystal content increases. However, the rheological effects on bubble bursting and ai...

    Authors: Kana Hashimoto and Ikuro Sumita
    Citation: Earth, Planets and Space 2021 73:143
  20. This study presents the first hydrogeochemical model of the hydrothermal systems of Turrialba and Irazú volcanoes in central Costa Rica, manifested as thermal springs, summit crater lakes, and fumarolic degass...

    Authors: D. Rouwet, R. Mora-Amador, C. Ramírez, G. González, E. Baldoni, G. Pecoraino, S. Inguaggiato, B. Capaccioni, F. Lucchi and C. A. Tranne
    Citation: Earth, Planets and Space 2021 73:142
  21. On January 23, 2018, a small phreatic eruption (VEI = 1) occurred at the Motoshirane Pyroclastic Cone Group in the southern part of Kusatsu-Shirane Volcano in central Japan. The eruption ejected ash, lapillus,...

    Authors: Nobuko Kametani, Yasuo Ishizaki, Mitsuhiro Yoshimoto, Fukashi Maeno, Akihiko Terada, Ryuta Furukawa, Ryo Honda, Yoshihiro Ishizuka, Jiro Komori, Masashi Nagai and Shinji Takarada
    Citation: Earth, Planets and Space 2021 73:141
  22. Kusatsu-Shirane volcano is one of the active volcanoes in Japan. Phreatic explosions occurred in Mt. Shirane in 1983 and most recently, in 2018, in Mt. Motoshirane. Information on the subsurface structure is c...

    Authors: Takao Koyama, Wataru Kanda, Mitsuru Utsugi, Takayuki Kaneko, Takao Ohminato, Atsushi Watanabe, Hiroshi Tsuji, Taro Nishimoto, Alexey Kuvshinov and Yoshiaki Honda
    Citation: Earth, Planets and Space 2021 73:139
  23. A phreatic eruption suddenly occurred at Motoshirane (Kusatsu-Shirane volcano, Japan) at 10:02 JST on January 23, 2018. A member of the Japan Self-Defense Force was killed by volcanic blocks during training in...

    Authors: Eiichi Sato
    Citation: Earth, Planets and Space 2021 73:117

    The Correction to this article has been published in Earth, Planets and Space 2021 73:128

  24. Direct sampling and analysis of fumarolic gas was conducted at Ebinokogen Ioyama volcano, Japan, between December 2015 and July 2020. Notable changes in the chemical composition of gases related to volcanic ac...

    Authors: Takeshi Ohba, Muga Yaguchi, Urumu Tsunogai, Masanori Ito and Ryo Shingubara
    Citation: Earth, Planets and Space 2021 73:81
  25. Since the beginning of the twenty-first century, volcanic unrest has occurred every 2–5 years at Hakone volcano. After the 2015 eruption, unrest activity changed significantly in terms of seismicity and geoche...

    Authors: Kazutaka Mannen, Yuki Abe, Yasushi Daita, Ryosuke Doke, Masatake Harada, George Kikugawa, Naoki Honma, Yuji Miyashita and Yohei Yukutake
    Citation: Earth, Planets and Space 2021 73:80
  26. The effusion rate of lava is one of the most important eruption parameters, as it is closely related to the migration process of magma underground and on the surface, such as changes in lava flow direction or ...

    Authors: Takayuki Kaneko, Atsushi Yasuda and Toshitsugu Fujii
    Citation: Earth, Planets and Space 2021 73:37
  27. Kusatsu-Shirane volcano hosts numerous thermal springs, fumaroles, and the crater lake of Yugama. Hence, it has been a particular study field for hydrothermal systems and phreatic eruptions. On 23 January 2018...

    Authors: Taishi Yamada, Aika K. Kurokawa, Akihiko Terada, Wataru Kanda, Hideki Ueda, Hiroshi Aoyama, Takahiro Ohkura, Yasuo Ogawa and Toshikazu Tanada
    Citation: Earth, Planets and Space 2021 73:14

    The Correction to this article has been published in Earth, Planets and Space 2021 73:184

  28. The Iwo-yama volcano of the Kirishima Volcanic Complex in Japan had a small phreatic eruption in April 2018, which newly formed multiple vents. The activity was recorded by two infrasound sensors and two monit...

    Authors: Dan Muramatsu, Takeshi Matsushima and Mie Ichihara
    Citation: Earth, Planets and Space 2021 73:8
  29. Quantitative analysis of bubble textures in a large number of volcanic pyroclasts is critical to investigating the eruption dynamics in a volcanic conduit. Here, we used a digital stereo microscope with low-an...

    Authors: Masatoshi Ohashi, Mie Ichihara, Fukashi Maeno, Ben Kennedy and Darren Gravley
    Citation: Earth, Planets and Space 2020 72:185
  30. Infrasonic stations are sparse at many volcanoes, especially those on remote islands and those with less frequent eruptions. When only a single infrasound station is available, the seismic–infrasonic cross-cor...

    Authors: Aika K. Kurokawa and Mie Ichihara
    Citation: Earth, Planets and Space 2020 72:171
  31. We aimed to perform three-dimensional imaging of the underlying geothermal system to a depth of 2 km using magnetotellurics (MT) at around the Yugama crater, the Kusatsu–Shirane Volcano, Japan, which is known ...

    Authors: Kuo Hsuan Tseng, Yasuo Ogawa, Nurhasan, Sabri Bülent Tank, Naoto Ujihara, Yoshimori Honkura, Akihiko Terada, Yoshiya Usui and Wataru Kanda
    Citation: Earth, Planets and Space 2020 72:161

    The Correction to this article has been published in Earth, Planets and Space 2022 74:81

  32. The formation of aggregates consisting of snow, water, and tephra has been reported in small-scale experiments on three-phase flows containing tephra, water, and snow, representing lahars triggered by snowmelt...

    Authors: Hirofumi Niiya, Kenichi Oda, Daisuke Tsuji and Hiroaki Katsuragi
    Citation: Earth, Planets and Space 2020 72:148
  33. We present detailed maps of local-scale 3D deformation preceding the 2018 phreatic eruption at Iwo-yama volcano (south of Kyushu Island, Japan), using a combination of airborne and spaceborne Interferometric S...

    Authors: Shohei Narita, Taku Ozawa, Yosuke Aoki, Masanobu Shimada, Masato Furuya, Youichiro Takada and Makoto Murakami
    Citation: Earth, Planets and Space 2020 72:145
  34. Improving the ability to detect and characterize long-duration volcanic tremor is crucial to understand the long-term dynamics and unrest of volcanic systems. We have applied data reduction methods (permutatio...

    Authors: Ivan Melchor, Javier Almendros, Roberto Carniel, Kostas I. Konstantinou, Marcia Hantusch and Alberto Caselli
    Citation: Earth, Planets and Space 2020 72:134
  35. The GCOM-C (SHIKISAI) satellite was developed to understand the mechanisms of global climate change. The second-generation global imager (SGLI) onboard GCOM-C is an optical sensor observing wavelengths from 38...

    Authors: Takayuki Kaneko, Atsushi Yasuda, Kenji Takasaki, Shun Nakano, Toshitsugu Fujii, Yoshiaki Honda, Kouji Kajiwara and Hiroshi Murakami
    Citation: Earth, Planets and Space 2020 72:115
  36. Brine samples from the wells in the Kashio mineral spring (an “Arima-type” hot spring at Ooshika-Mura, central Japan) were analyzed to determine the original chemical and isotopic compositions of the deep brin...

    Authors: Fumitake Kusuhara, Kohei Kazahaya, Noritoshi Morikawa, Masaya Yasuhara, Hidemi Tanaka, Masaaki Takahashi and Yuki Tosaki
    Citation: Earth, Planets and Space 2020 72:107
  37. The phreatomagmatic eruption at Aso volcano on October 8, 2016, released PDC and fallout up to 320 km from the vent, providing an opportunity to study the dispersal and sedimentation of tephra bearing wet and ...

    Authors: Tomohiro Tsuji, Naoki Nishizaka and Kozo Ohnishi
    Citation: Earth, Planets and Space 2020 72:104
  38. Reconstruction of the eruption history of an active volcano is necessary to elucidate its volcanic activity and to assess the probability of its volcanic eruption. Yokodake volcano in central Japan is the only...

    Authors: Hiroya Nitta, Takeshi Saito and Yorinao Shitaoka
    Citation: Earth, Planets and Space 2020 72:103

    The Correction to this article has been published in Earth, Planets and Space 2020 72:127

  39. We have observed very long period earthquakes (VLPs) over the period 2007 to the end of 2019 at Whakaari/White Island volcano, New Zealand. The earthquakes exhibit similitude between waveforms which suggests r...

    Authors: Iseul Park, Arthur Jolly, Ivan Lokmer and Ben Kennedy
    Citation: Earth, Planets and Space 2020 72:92
  40. 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
  41. 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
  42. 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
  43. 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
  44. 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

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