Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Hiromitsu Oshima"'
Autor:
Keiko Tamura, Kenji Satake, Yuichiro Tanioka, Reo Kimura, Naoyuki Kato, Masato Iguchi, Hiroe Miyake, Hiromitsu Oshima, Kazuki Koketsu, Yuichi Morita, Yoshihiko Kuroda
Publikováno v:
Journal of Disaster Research. 15:152-164
In order to contribute to the field of disaster science, various research in Japan currently focus on the clarification of the phenomenon called “disaster.” Due to society’s demand for disaster prevention and disaster mitigation, these research
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::471a0ff3b68f5e0fe9f081aad6fb84ed
https://doi.org/10.20965/jdr.2020.p0152
https://doi.org/10.20965/jdr.2020.p0152
Publikováno v:
Pure and Applied Geophysics. 174:1061-1070
We performed three-dimensional density modeling of Showa-Shinzan lava dome, Usu, Japan, by joint inversion of the gravity anomaly and recently obtained muon radiography data. Our multilayer emulsion muon detector significantly reduces the background
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::717b4f22fc4d38eed860c45dee4c53a2
https://doi.org/10.1007/s00024-016-1430-9
https://doi.org/10.1007/s00024-016-1430-9
Autor:
Jun Oikawa, Satoru Tanaka, Tsuneomi Kagiyama, Hiroki Miyamachi, Tomoki Tsutsui, Yasushi Ikeda, Hiroaki Katayama, Norimichi Matsuo, Hiromitsu Oshima, Yuichi Nishimura, Keigo Yamamoto, Toshiki Watanabe, Fumihito Yamazaki
Publikováno v:
Bulletin of the Earthquake Research Institute, University of Tokyo / Tokyo Daigaku Jishin Kenkyūjo Ihō; 2021, Vol. 96 Issue 1/2, p1-10, 10p
Autor:
Yoshiyuki Tanaka, Hiromitsu Oshima, Ryuichi Nishiyama, Shuhei Okubo, Hiroyuki Tanaka, Tokumitsu Maekawa
Publikováno v:
Journal of Geophysical Research: Solid Earth. 119:699-710
We have developed an integrated processing method for muon radiography and gravity anomaly data for determining the 3-D density structures of volcanoes with a higher spatial resolution than is possible by conventional gravity inversion. In the presen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f677d67415006e2170ef21c782af6121
https://doi.org/10.1002/2013jb010234
https://doi.org/10.1002/2013jb010234
Autor:
Hiromitsu Oshima, Sadato Ueki, Shuhei Okubo, Yoshiyuki Tanaka, Yuichi Imanishi, Tokumitsu Maekawa
Publikováno v:
Earth, Planets and Space. 65:563-571
We report here on continuous absolute gravity measurements made between February 2011 and March 2012 and repeated relative gravity measurements in the vicinity of Shinmoe-dake volcano, which commenced erupting in late January 2011. We find that 20 of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::03d917bfdf4ebccfa72183a736136c1a
https://doi.org/10.5047/eps.2013.03.014
https://doi.org/10.5047/eps.2013.03.014
Autor:
Takeshi Hashimoto, Hiromitsu Oshima, Tomokadu Kobayashi, Takeshi Tameguri, Shin'ya Onizawa, Hiroshi Aoyama, Hitoshi Mori
Publikováno v:
Journal of Volcanology and Geothermal Research. 187:203-217
Post-eruptive crustal activity after the 2000 eruption of Usu volcano was investigated by seismic and geodetic field observations. Remarkable features of the magmatic eruptions that occur almost every 30 years include lava dome formation and strong p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::24b60b3e8ae575b1e4a6481a69f8d704
https://doi.org/10.1016/j.jvolgeores.2009.09.009
https://doi.org/10.1016/j.jvolgeores.2009.09.009
Autor:
Takehiko Mori, Keigo Yamamoto, Takeshi Matsushima, Hiroki Miyamachi, Jun Oikawa, Hiromitsu Oshima, Shin'ya Onizawa, Hiroshi Aoyama, Norimichi Matsuwo, Tokumitsu Maekawa, Toru Shiga, Tomoki Tsutsui, Satoru Tanaka, Atsuo Suzuki
Publikováno v:
Journal of Volcanology and Geothermal Research. 183:245-253
We investigate the basement structure of the Hokkaido Komagatake volcano, Japan, by an artificial seismic survey. By inverting first arrival time data, a three-dimensional P-wave velocity model down to 3 km b.s.l. is obtained. The resultant velocity
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::63405951cb0ae8774dfdfe61a451d3c3
https://doi.org/10.1016/j.jvolgeores.2009.03.013
https://doi.org/10.1016/j.jvolgeores.2009.03.013
Autor:
Hiroki Miyamachi, Norimichi Matsuwo, Hiromu Okada, Taka'aki Taira, Keigo Yamamoto, Tokumitsu Maekawa, Hitoshi Mori, Shin'ya Onizawa, Hiroshi Aoyama, Jun Oikawa, Hiromitsu Oshima, Takao Ohminato, Takehiko Mori, Tomoki Tsutsui, Atsuo Suzuki
Publikováno v:
Journal of Volcanology and Geothermal Research. 160:175-194
The three-dimensional P-wave velocity structure of Usu volcano, Japan, is investigated by using first arrival time data of the 2001 active seismic survey. The velocity structure down to the Pre-Neogene basement below the volcano is revealed. The most
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::30e65a9c8b0c5266a7ea979f0b3b20d7
https://doi.org/10.1016/j.jvolgeores.2006.10.005
https://doi.org/10.1016/j.jvolgeores.2006.10.005
Publikováno v:
Earth, Planets and Space. 56:1049-1058
¶Continuous and repeated geomagnetic observations have been performed at 8 stations in the eastern part of Hokkaido, NE Japan, to confirm a detailed picture of geomagnetic secular changes. The observation delineated anomalously large secular changes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b2743c7429e82cc74a571fe511750262
https://doi.org/10.1186/bf03352547
https://doi.org/10.1186/bf03352547
Publikováno v:
Journal of Volcanology and Geothermal Research. 115:33-42
Field explosion experiments using dynamite were carried out to investigate the effect of explosion energy and depth on the nature of explosion cloud. The scaling law of explosion was established among the energy, depth, and the nature of explosion cl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dd12f26d1bee10cd6b2fe6615df9c5a2
https://doi.org/10.1016/s0377-0273(01)00307-9
https://doi.org/10.1016/s0377-0273(01)00307-9