Zobrazeno 1 - 10
of 199
pro vyhledávání: '"Takashi Tonegawa"'
Autor:
Shunsuke Takemura, Yohei Hamada, Hanaya Okuda, Yutaro Okada, Kurama Okubo, Takeshi Akuhara, Akemi Noda, Takashi Tonegawa
Publikováno v:
Earth, Planets and Space, Vol 75, Iss 1, Pp 1-22 (2023)
Abstract Slow earthquakes occur at deep and shallow plate boundaries along the Nankai Trough. Deep slow earthquakes are continuously distributed along the 30–40 km depth contours of the upper surface of the subducted Philippine Sea Plate. In contra
Externí odkaz:
https://doaj.org/article/8a5b7b920af44b449f37395046e88d8a
Autor:
Takashi Tonegawa, Yoshio Fukao
Publikováno v:
Earth, Planets and Space, Vol 74, Iss 1, Pp 1-9 (2022)
Abstract Meteotsunamis (forced waves) triggered by atmospheric disturbances of Lamb waves due to the 2022 Hunga–Tonga volcanic eruption have been observed in coastal areas surrounding the Pacific Ocean. However, the spatiotemporal evolution of the
Externí odkaz:
https://doaj.org/article/18c8050fda1847c1b2605ce52e7cc2df
Publikováno v:
Journal of Market Access & Health Policy, Vol 10, Iss 1 (2022)
Background Although medical costs need to be controlled, there are no easily applicable cost prediction models of transfer to palliative care (PC) for terminal cancer patients.Objective Construct a cost-saving prediction model based on terminal cance
Externí odkaz:
https://doaj.org/article/e62b2a07278d44cf8113373b04b80878
Autor:
Masayuki Obayashi, Junko Yoshimitsu, Daisuke Suetsugu, Hajime Shiobara, Hiroko Sugioka, Aki Ito, Takehi Isse, Yasushi Ishihara, Satoru Tanaka, Takashi Tonegawa
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
Abstract We investigated the seismological structure beneath the equatorial Melanesian region, where is tectonically unique because an immense oceanic plateau, a volcanic chain and subduction zones meet. We conducted a multi-frequency P-wave tomograp
Externí odkaz:
https://doaj.org/article/0b446d8ae42d4b52b70be238bba6cd22
Autor:
Takashi Tonegawa, Toshinori Kimura, Kazuya Shiraishi, Suguru Yabe, Yoshio Fukao, Eiichiro Araki, Masataka Kinoshita, Sanada Yoshinori, Seiichi Miura, Yasuyuki Nakamura, Shuichi Kodaira
Publikováno v:
Earth, Planets and Space, Vol 73, Iss 1, Pp 1-17 (2021)
Abstract Lateral spatial variations of weak portions at the plate boundary in subduction zones have been estimated primarily by the distribution of slow earthquakes mainly occurring around seismogenic zones. However, the detailed depth profile of wea
Externí odkaz:
https://doaj.org/article/3e43b91e5cbd490e8b4e3a82d5cbb8f9
Autor:
Hiroyuki Matsumoto, Eiichiro Araki, Toshinori Kimura, Gou Fujie, Kazuya Shiraishi, Takashi Tonegawa, Koichiro Obana, Ryuta Arai, Yuka Kaiho, Yasuyuki Nakamura, Takashi Yokobiki, Shuichi Kodaira, Narumi Takahashi, Robert Ellwood, Victor Yartsev, Martin Karrenbach
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
Abstract A ship-based seismic survey was conducted close to a fiber-optic submarine cable, and 50 km-long distributed acoustic sensing (DAS) recordings with air-gun shots were obtained for the first time. We examine the acquired DAS dataset together
Externí odkaz:
https://doaj.org/article/ed3c6ae66ce0407797cc3133815c9688
Autor:
Aki Ito, Takashi Tonegawa, Naoki Uchida, Yojiro Yamamoto, Daisuke Suetsugu, Ryota Hino, Hiroko Sugioka, Koichiro Obana, Kazuo Nakahigashi, Masanao Shinohara
Publikováno v:
Earth, Planets and Space, Vol 71, Iss 1, Pp 1-23 (2019)
Abstract We applied tomographic inversion and receiver function analysis to seismic data from ocean-bottom seismometers and land-based stations to understand the structure and its relationship with slow slip events off Boso, Japan. First, we delineat
Externí odkaz:
https://doaj.org/article/4b28cfc841f148268f2fea4b05c25b62
Autor:
Daisuke Suetsugu, Hajime Shiobara, Hiroko Sugioka, Aki Ito, Takehi Isse, Yasushi Ishihara, Satoru Tanaka, Masayuki Obayashi, Takashi Tonegawa, Junko Yoshimitsu, Takumi Kobayashi
Publikováno v:
Earth, Planets and Space, Vol 71, Iss 1, Pp 1-9 (2019)
Abstract The Ontong Java Plateau (OJP) in the southwest Pacific is the largest oceanic large igneous provinces (LIP) on Earth. Detailed seismic structure of the plateau has not been understood well because of sparse seismic stations. We investigated
Externí odkaz:
https://doaj.org/article/8dd3815f15ed4751a24dab606847ed18
Publikováno v:
Frontiers in Earth Science, Vol 8 (2021)
Ambient noise correlation is capable of retrieving waves propagating between two receivers. Although waves retrieved using this technique are primarily surface waves, the retrieval of body waves, including direct, refracted, and reflected waves, has
Externí odkaz:
https://doaj.org/article/2b0e01d72f1442c89a902fa2f8f52fd5
Publikováno v:
Earth, Planets and Space, Vol 70, Iss 1, Pp 1-12 (2018)
Abstract The uppermost structures of incoming oceanic plates have been investigated by seismic exploration surveys, primarily based on two-dimensional profiles. However, their regional-scale lateral variations and shear wave velocity structures with
Externí odkaz:
https://doaj.org/article/24406f7dc68d4a6aa3534e455d822a6d