Results 171 to 180 of about 6,387 (218)

Coupled hydrothermal venting and hydrocarbon seepage discovered at Conical Seamount, Papua New Guinea. [PDF]

Sci Rep
Brandl PA, Sander SG, Beier C, Schmidt M, Falkenberg JJ, Kihara T, Meyn K, Genske F, Zitoun R, McInnes BIA, Hannington MD, Petersen S, Ranta EJ, Jourdan F, Gautreau LM, Hansteen TH, Heyde I, Konabe S, Espi JO, SO299 Shipboard Scientific Party.   +19 more
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Back-arc rifting in the Okinawa Trough

Marine and Petroleum Geology, 1985
Abstract Geological and geophysical data reveal that the Okinawa Trough shows incipient continental rifting, and crustal separation started from about 2 Ma. The early extensional movements in the trough are probably of Miocene age. In addition to the Miocene phase, two main periods of extension are recognized: a Pleistocene phase between 1.9 and 0.5 ...
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Intermediate and deep water formation in the Okinawa Trough

Journal of Geophysical Research: Oceans, 2013
Water mass formation in the intermediate and deep layers of the Okinawa Trough is investigated using two distinct data sets: a quasi‐climatological data set of the water properties of the minimum salinity surface produced from Argo float profiles and historical CTD data, and a velocity data set in the Kerama Gap measured by moored current meters during
Nakamura, Hirohiko, Nishina, Ayako, Liu, Zhaojun, Tanaka, Fumiyo, Wimbush, Mark, Park, Jae Hun   +5 more
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Heat flow in the southwestern Okinawa Trough

Earth and Planetary Science Letters, 1981
Abstract Lying to the southeast of the East China Sea continental shelf, the Okinawa Trough is believed to have been formed by crustal spreading behind the Ryukyu island arc. It has the highest mean heat flow among the Pacific marginal basins. The mean of 18 reliable measurements is3.34±2.75HFU.
R.S. Lu, J.J. Pan, T.C. Lee
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Methane in Izena Cauldron, Okinawa Trough

Journal of Oceanography, 1995
Methane in the deep water of Izena Cauldron (maximum depth: ca. 1650 m) at the east side of mid-Okinawa Trough was studied by casting a CTD system with 12 Niskin bottles for water sampling at 11 stations inside and outside the cauldron. The water contained much methane up to 706 nmoles/l.
Shuichi Watanabe, Nobuo Tsurushima, Masashi Kusakabe, Shizuo Tsunogai   +3 more
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Microseismicity in the middle Okinawa trough

Journal of Geophysical Research: Solid Earth, 1989
We conducted a microearthquake survey with ocean bottom seismometers (OBS) in the middle Okinawa trough in 1984. During about one month of operation, very active microseismicity was observed. The microearthquake activity was characterized by the ceaseless occurrence of numerous small earthquakes in the vicinity of OBS stations.
Toru Ouchi, Hisatosi Kawakami, Shozaburo Nagumo, Junzo Kasahara, Sadayuki Koresawa   +4 more
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Black Ore Cultivation Program in the Okinawa Trough

Offshore Technology Conference, 2014
JAMSTEC has an international patent for the environmentally-friendly cultivation system of hydrothermal chimney as the accessory product of scientific drilling program in the Okinawa Trough. We introduce the characteristics of natural and artificial hydrothermal vents in the Okinawa Trough, how this field was developed with special devices in the IODP ...
T. Saruhashi, M. Kyo, I. Sawada, T. Nozaki, T. Yokoyama, C. Seneviratne, A.C. Lim, K.K Goi, S.G. Teo   +8 more
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Microearthquakes and faulting in the southern Okinawa Trough

Tectonophysics, 2003
Abstract Southern Okinawa Trough represents an early stage of back-arc rifting and is characterized by normal faulting and microearthquakes. Earthquake distribution and deep structure of fault was investigated to clarify active rifting in the southern Okinawa Trough, where two parallel grabens are located. A network of ocean bottom seismometers (OBSs)
Mamoru Nakamura, Hiroshi Katao
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Okinawa Trough: Origin of a back-arc basin

Marine Geology, 1980
Abstract The sequence of back-arc basin development in the southwestern part of Okinawa Trough has apparently been crustal thinning, involving normal faulting and fault block rotation, rifting, and crustal separation with associated magmatic intrusion.
Chao-Shing Lee, George G. Shor, L.D. Bibee, Richard S. Lu, Thomas W.C. Hilde   +4 more
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Crustal nature and lithospheric structure of the Okinawa Trough

Geological Journal, 2020
The Okinawa Trough (OT) is a back‐arc basin located in the eastern edge of the Eurasian Plate. The stage of back‐arc spreading and the exact crustal thickness of the OT are still controversial. To determine the crustal nature and lithospheric structure of the OT, the Moho discontinuity depth of the OT is calculated through the Parker–Oldenburg ...
Gang Wang, Suhua Jiang, Sanzhong Li, Huixuan Zhang, Wei Cao, Feiyu Zhao, Jianping Lei, Song Gao   +7 more
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