Zobrazeno 1 - 10
of 87
pro vyhledávání: '"Makoto Uyeshima"'
Autor:
Dieno Diba, Makoto Uyeshima, Masahiro Ichiki, Shin’ya Sakanaka, Makoto Tamura, Yiren Yuan, Marceau Gresse, Yusuke Yamaya, Yoshiya Usui
Publikováno v:
Earth, Planets and Space, Vol 75, Iss 1, Pp 1-10 (2023)
Abstract Many active volcanoes and various types of seismic activities exist in the southern part of the Northeast Japan subduction zone. One of the geologically most interesting features in this area is the sequential explosive eruptions of a group
Externí odkaz:
https://doaj.org/article/9a6a69d76bb3470f9fffbb7fec8e083c
Publikováno v:
Communications Earth & Environment, Vol 3, Iss 1, Pp 1-9 (2022)
Electric field changes generated by the movement of shallow groundwater can be regarded as a precursor to phreatic volcanic eruptions, according to near-vent geophysical observations of Iwo-Yama volcano in the Kirishima complex, Japan.
Externí odkaz:
https://doaj.org/article/69e891fc8fc94ef68034d51edfd58d13
Autor:
Masahiro Ichiki, Toshiki Kaida, Takashi Nakayama, Satoshi Miura, Mare Yamamoto, Yuichi Morita, Makoto Uyeshima
Publikováno v:
Earth, Planets and Space, Vol 73, Iss 1, Pp 1-30 (2021)
Abstract 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 volcanoes capable of producing a
Externí odkaz:
https://doaj.org/article/8de65e1f9d27459497ec28064a27323f
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:
Nobuo Matsushima, Mitsuru Utsugi, Shinichi Takakura, Tadashi Yamasaki, Maki Hata, Takeshi Hashimoto, Makoto Uyeshima
Publikováno v:
Earth, Planets and Space, Vol 72, Iss 1, Pp 1-20 (2020)
Abstract 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 100 measurement sites in and a
Externí odkaz:
https://doaj.org/article/47906b775264438e814e003ca8735992
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:
Agnis Triahadini, Koki Aizawa, Yoshiko Teguri, Takao Koyama, Kaori Tsukamoto, Dan Muramatsu, Keita Chiba, Makoto Uyeshima
Publikováno v:
Earth, Planets and Space, Vol 71, Iss 1, Pp 1-13 (2019)
Abstract We conducted a broadband magnetotelluric (MT) survey along a north–south transect across Unzen graben, Japan. The MT survey line is located ~ 2 km west of the most recent lava dome and consisted of 27 stations along a 9-km profile. We esti
Externí odkaz:
https://doaj.org/article/6a16a47c53604dc793eb9b6b6b478d39
Autor:
Haruhiro Inagaki, Makoto Uyeshima, Mitsuru Utsugi, Hiroki Saito, Yasuhiro Fujimitsu, Keigo Kitamura, Koki Aizawa, Takao Koyama, Nobuo Matsushima, Shinichi Takakura
Publikováno v:
Geophysical Journal International. 228:755-772
SUMMARYMagnetotelluric (MT) observations have revealed subvertical electrical conductors that extend from shallow depths into the mid-crust at various geothermal zones, active volcanoes and active faults worldwide. These deeply rooted subvertical con
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b717667d4d9c0e7b53de6d99945a0882
https://doi.org/10.1093/gji/ggab368
https://doi.org/10.1093/gji/ggab368
The southern part of Tohoku, Northeast Japan, is an area with significant in-land activities owing to the ongoing subduction mechanism. Among these are active volcanoes distributed on the volcanic front and back-arc, active faults throughout the area
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cac50966268189308d12e4f0f3dd0847
https://doi.org/10.21203/rs.3.rs-2114098/v1
https://doi.org/10.21203/rs.3.rs-2114098/v1
Autor:
Makoto Uyeshima, Satoshi Miura, Mare Yamamoto, Yuichi Morita, Masahiro Ichiki, Takashi Nakayama, Toshiki Kaida
Publikováno v:
Earth, Planets and Space, Vol 73, Iss 1, Pp 1-30 (2021)
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 volcanoes capable of producing a potentia
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e31fc6109cfb2580daa054e44ddd397c
https://doaj.org/article/8de65e1f9d27459497ec28064a27323f
https://doaj.org/article/8de65e1f9d27459497ec28064a27323f