Zobrazeno 1 - 10
of 65
pro vyhledávání: '"Wataru Kanda"'
Autor:
Asami Honda, Wataru Kanda, Takao Koyama, Shinichi Takakura, Yasuo Matsunaga, Tatsuji Nishizawa, Satoshi Ikezawa
Publikováno v:
Earth, Planets and Space, Vol 75, Iss 1, Pp 1-15 (2023)
Abstract In 2018, a phreatic eruption occurred at Mt. Motoshirane, a pyroclastic cone group of the Kusatsu-Shirane Volcano in central Japan. The eruption was abrupt, and no signs of volcanic activity have been observed in recent years, in contrast to
Externí odkaz:
https://doaj.org/article/dd23ea6381944fc197ca039557a31a19
Autor:
Takao Koyama, Wataru Kanda, Mitsuru Utsugi, Takayuki Kaneko, Takao Ohminato, Atsushi Watanabe, Hiroshi Tsuji, Taro Nishimoto, Alexey Kuvshinov, Yoshiaki Honda
Publikováno v:
Earth, Planets and Space, Vol 73, Iss 1, Pp 1-11 (2021)
Abstract 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 crucial for understanding the act
Externí odkaz:
https://doaj.org/article/7fb9569233fa4989bee7fbca4e86bc0a
Autor:
Akihiko Terada, Wataru Kanda, Yasuo Ogawa, Taishi Yamada, Mare Yamamoto, Takahiro Ohkura, Hiroshi Aoyama, Tomoki Tsutsui, Shin’ya Onizawa
Publikováno v:
Earth, Planets and Space, Vol 73, Iss 1, Pp 1-17 (2021)
Abstract 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. The tilt records can be explai
Externí odkaz:
https://doaj.org/article/ca998230f62e4cc7bd3d0ec79a7caaf6
Autor:
Koki Aizawa, Shinichi Takakura, Hisafumi Asaue, Katsuaki Koike, Ryokei Yoshimura, Ken’ichi Yamazaki, Shintaro Komatsu, Mitsuru Utsugi, Hiroyuki Inoue, Kaori Tsukamoto, Makoto Uyeshima, Takao Koyama, Wataru Kanda, Tohru Yoshinaga, Nobuo Matsushima, Kazunari Uchida, Yuko Tsukashima, Takeshi Matsushima, Hiroshi Ichihara, Dan Muramatsu, Yoshiko Teguri, Azusa Shito, Satoshi Matsumoto, Hiroshi Shimizu
Publikováno v:
Earth, Planets and Space, Vol 73, Iss 1, Pp 1-12 (2021)
Abstract Crustal earthquake ruptures tend to initiate near fluid-rich zones. However, it is relatively unknown whether fluid-rich zones can further promote or arrest these ruptures. We image the electrical resistivity structure around the focal area
Externí odkaz:
https://doaj.org/article/6acd1be115b24e069e30dddacf443228
Autor:
Taishi Yamada, Aika K. Kurokawa, Akihiko Terada, Wataru Kanda, Hideki Ueda, Hiroshi Aoyama, Takahiro Ohkura, Yasuo Ogawa, Toshikazu Tanada
Publikováno v:
Earth, Planets and Space, Vol 73, Iss 1, Pp 1-15 (2021)
Abstract 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, a phreatic eruption occurred a
Externí odkaz:
https://doaj.org/article/4d7ce9f9af0d4be5ae5ae95ea86125f1
Autor:
Kuo Hsuan Tseng, Yasuo Ogawa, Nurhasan, Sabri Bülent Tank, Naoto Ujihara, Yoshimori Honkura, Akihiko Terada, Yoshiya Usui, Wataru Kanda
Publikováno v:
Earth, Planets and Space, Vol 72, Iss 1, Pp 1-11 (2020)
Abstract 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 to have frequent phreatic erup
Externí odkaz:
https://doaj.org/article/c62ea17006904237b7cb39c183e7ef20
Autor:
Yao-Chong Sun, Makoto Uyeshima, Hengxin Ren, Qinghua Huang, Koki Aizawa, Kaori Tsukamoto, Wataru Kanda, Kaori Seki, Takahiro Kishita, Takao Ohminato, Atsushi Watanabe, Jiangjun Ran, Xiaofei Chen
Publikováno v:
Earth, Planets and Space, Vol 71, Iss 1, Pp 1-24 (2019)
Abstract Coseismic electromagnetic (EM) signals that appear from the P arrival were observed in a volcanic area during the 2016 Kumamoto earthquake. In this study, we conduct numerical simulations to explain the coseismic EM signals observed for a M5
Externí odkaz:
https://doaj.org/article/ee9dbc5c985d4d70b9ab1399887f9bc0
Autor:
Kuo Hsuan Tseng, Yasuo Ogawa, Nurhasan, Sabri Bülent Tank, Naoto Ujihara, Yoshimori Honkura, Akihiko Terada, Yoshiya Usui, Wataru Kanda
Publikováno v:
Earth, Planets and Space, Vol 74, Iss 1, Pp 1-2 (2022)
Externí odkaz:
https://doaj.org/article/12b1eec01f7f4d54848595eacbe682a9
Publikováno v:
Earth, Planets and Space, Vol 71, Iss 1, Pp 1-10 (2019)
Abstract 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 the subsurface structure of this
Externí odkaz:
https://doaj.org/article/8b31bdcf38cc4efca381e07eb4330953
Autor:
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, Yoshiya Usui
Publikováno v:
Earth, Planets and Space, Vol 70, Iss 1, Pp 1-10 (2018)
Abstract 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 activity and geodetic signals c
Externí odkaz:
https://doaj.org/article/932ceb1e7ad940fe9ccf285bb02fb0a9