Results 141 to 150 of about 906 (177)

On tectonic problems of the Okinawa Trough

Chinese Journal of Oceanology and Limnology, 2001
The Okinawa Trough is a very active tectonic zone at the margin of the Northwest Pacific and is typical of back-are-rifting at the young stage of tectonic evolution. Many scientists from Japan, China, Germany, France, the U.S.A. and Russia have done a lot of geologic and geophysical investigations there.
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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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Deep countercurrent beneath the Kuroshio in the Okinawa Trough [PDF]

Journal of Geophysical Research, 2008
The Okinawa Trough is geographically separated into the northern and southern parts by the Kerama Gap, and the northern part is composed of the northern, central and southern subbasins formed by bights of the continental slope. Previous observations have indicated that a deep countercurrent is present beneath the Kuroshio on the continental slope in ...
Hiroshi Ichikawa, Hirohiko Nakamura, Hideharu Sasaki   +2 more
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Origin and model of transform faults in the Okinawa Trough

Marine Geophysical Research, 2017
Transform faults in back-arc basins are the key to revealing the opening and development of marginal seas. The Okinawa Trough (OT) represents an incipient and active back-arc or marginal sea basin oriented in a general NE-SW direction. To determine the strikes and spatial distribution of transform faults in the OT, this paper dissects the NW- and NNE ...
Bo Liu, Sanzhong Li, Suhua Jiang, Yanhui Suo, Lingli Guo, Yongming Wang, Huixuan Zhang   +6 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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Sea of Japan and Okinawa Trough

1985
The northeastern margin of the Asiatic continent is fringed by trench—arc—back-arc systems. Best known is a system consisting of the Japan Trench—Nankai Trough, Japanese island arcs, and the Sea of Japan. The Sea of Japan is, as a whole, a marginal sea with an area of about 1 million km2, bounded on the north by Sikhote Alin eastern Siberia, on the ...
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Heat flow anomaly in the middle Okinawa Trough

Tectonophysics, 1989
Abstract Heat flow measurements in the Okinawa Trough were carried out on three cruises in 1984 and 48 new values were obtained. Non-linear temperature-depth profiles were obtained at some stations and interpreted as showing the results of hydrothermal circulation.
Makoto Yamano, Seiya Uyeda, Jean-Paul Foucher, Jean-Claude Sibuet   +3 more
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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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Monoterpinenes as terrigenous markers in Okinawa Trough sediments

Geochemistry, 1984
Monoterpinenes were isolated from Okinawa Trough sediments at the 1000-m water depth by thin-layer chromatography (TLC) and identified by gas chromatography (GC) and gas chromatography-mass spectrometry-data system (GC-MS-DS). Identification has revealed cyclohexene, 1-methyl-5-(1-methylethenyl), cyclohexene, 1-methyl-3-(1-methylethenyl), and ...
Shanchun Jiang, Jiamo Fu
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Basic geochemical characteristics of sediments in the Okinawa trough

Chinese Journal of Oceanology and Limnology, 1986
A total of 21 elements, Si, Al, K, Na, Ca, Mg, Fe, Mn, Ti, P, Cu, Co, Ni, Zn, Pb, Cr, Rb, Sr Ba, Cd and Corg(organic carbon), was determined in the trough. Average contents of most elements were found to be higher in the trough bottom than in the western and eastern slopes.
Zhao Yiyang, He Lijuan, Zhang Xiulian, Jia Fengmei, Xia Qing   +4 more
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