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Akademický článek

Correlation between induced polarization and sulfide content of rock samples obtained from seafloor hydrothermal mounds in the Okinawa Trough, Japan

Autor: Yusuke Ohta, Tada-nori Goto, Katsuaki Koike, Koki Kashiwaya, Weiren Lin, Osamu Tadai, Takafumi Kasaya, Toshiya Kanamatsu, Hideaki Machiyama

Publikováno v: Earth, Planets and Space, Vol 76, Iss 1, Pp 1-17 (2024)

Abstract The physical properties of seafloor massive sulfides are crucial for interpreting sub-seafloor images from geophysical surveys, shedding light on the evolution of seafloor mineral deposits. While some studies have explored the relationship b

Externí odkaz: https://doaj.org/article/157296ef55f54299b8444c4b36679e51

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Akademický článek

Origins of sediments and fluids in submarine mud volcanoes off Tanegashima Island, northern Ryukyu Trench, Japan

Autor: Akira Ijiri, Ryoma Setoguchi, Yuki Mitsutome, Tomohiro Toki, Masafumi Murayama, Kyoko Hagino, Yohei Hamada, Takeyasu Yamagata, Hiroyuki Matsuzaki, Wataru Tanikawa, Osamu Tadai, Kazuya Kitada, Tatsuhiko Hoshino, Takuro Noguchi, Juichiro Ashi, Fumio Inagaki

Publikováno v: Frontiers in Earth Science, Vol 11 (2023)

Mud volcanoes are topographic features through which over-pressurized sediments are intruded upward and erupted, transporting fluids and sediments from the deep subsurface to the surface/seafloor. To understand material and biogeochemical cycling thr

Externí odkaz: https://doaj.org/article/91a8207ba86e420e8ab089ff145e49d4

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Akademický článek

Thermal Conductivity Profile in the Nankai Accretionary Prism at IODP NanTroSEIZE Site C0002: Estimations From High‐Pressure Experiments Using Input Site Sediments

Autor: Weiren Lin, Takehiro Hirose, Osamu Tadai, Wataru Tanikawa, Kazuya Ishitsuka, Xiaoqiu Yang

Publikováno v: Geochemistry, Geophysics, Geosystems, Vol 21, Iss 7, Pp n/a-n/a (2020)

Abstract Depth profiles of sediment thermal conductivity are required for understanding the thermal structure in active seismogenic zones. During the Nankai Trough Seismogenic Zone Experiment (NanTroSEIZE), a scientific drilling project of the Intern

Externí odkaz: https://doaj.org/article/ef8b8fd7c50a4479b6b09e7238e2c406

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Akademický článek

Geophysical constraints on microbial biomass in subseafloor sediments and coal seams down to 2.5 km off Shimokita Peninsula, Japan

Autor: Wataru Tanikawa, Osamu Tadai, Yuki Morono, Kai-Uwe Hinrichs, Fumio Inagaki

Publikováno v: Progress in Earth and Planetary Science, Vol 5, Iss 1, Pp 1-17 (2018)

Abstract To understand the ability of microbial life to inhabit a deep subseafloor coalbed sedimentary basin, the correlation between fluid transport properties and the abundance of microbial cells was investigated based on core samples collected dow

Externí odkaz: https://doaj.org/article/9fffe5a797ca4231bba111812a38ff6c

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Akademický článek

Depth profiles of resistivity and spectral IP for active modern submarine hydrothermal deposits: a case study from the Iheya North Knoll and the Iheya Minor Ridge in Okinawa Trough, Japan

Autor: Shogo Komori, Yuka Masaki, Wataru Tanikawa, Junji Torimoto, Yusuke Ohta, Masato Makio, Lena Maeda, Jun-ichiro Ishibashi, Tatsuo Nozaki, Osamu Tadai, Hidenori Kumagai

Publikováno v: Earth, Planets and Space, Vol 69, Iss 1, Pp 1-10 (2017)

Abstract Submarine hydrothermal deposits are one of the promising seafloor mineral resources, because they can store a large amount of metallic minerals as sulfides. The present study focuses on the electrical properties of active modern submarine hy

Externí odkaz: https://doaj.org/article/268821a1a6fa4d08a79573d7dfd33f50

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Correlation between induced polarization and sulfide content of rock samples obtained from seafloor hydrothermal mounds of the Okinawa Trough, Japan

Autor: Yusuke Ohta, Tada-nori Goto, Katsuaki Koike, Koki Kashiwaya, Weiren Lin, Osamu Tadai, Takafumi Kasaya, Toshiya Kanamatsu, Hideaki Machiyama

Physical properties of seafloor massive sulfides provide a basis for interpreting of sub-seafloor images obtained from geophysical surveys. They are useful for elucidating the evolution of seafloor mineral deposits. A few reports have described studi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9ea0c5795d2ed585d825062aee68cbff
https://doi.org/10.21203/rs.3.rs-2513713/v1

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Strength characteristics of sediments from a gas hydrate deposit in the Krishna–Godavari Basin on the eastern margin of India

Autor: Shun Nomura, Hung Y. Wu, Natsue Abe, Takamitsu Sugihara, Wataru Tanikawa, Weiren Lin, Yuka Masaki, Lallan P. Gupta, Yohei Hamada, Yasuhiro Yamada, Takehiro Hirose, Osamu Tadai, Masataka Kinoshita, Kentaro Hatakeda

Publikováno v: Marine and Petroleum Geology. 108:348-355

Knowledge of the strength of sediments overlying sub-seafloor gas-hydrate deposits is crucial for predicting borehole and seafloor stability during hydrate extraction. Ideally, sediment strength should be determined along a continuous downhole profil

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e3b1e5fafb6d6ba42a4eb714ad6c5cb7
https://doi.org/10.1016/j.marpetgeo.2018.08.017

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