Results 81 to 90 of about 26,766 (257)
The South China Sea is one of the regions with the richest marine biodiversity in the world, featuring a variety of ecological environment such as deep-sea plains, seamounts, and cold springs. Currently, studies on the biodiversity of the South China Sea
Xiaofei Chen, Hui Jia, Hui Zhang
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Crustal structure and growth of the Forearc region of Izu-Ogasawara arc [PDF]
(独)海洋研究開発機構(JAMSTEC)では、2002年から伊豆・小笠原・マリアナ島弧において、大陸地殻の生成過程を明らかにすることを目的に構造調査を進め、現在の島弧地殻のボリュームより多くの玄武岩マグマが必要で島弧地殻を生成する過程でマフィックな島弧地殻の一部をマントル内に戻していること(Takahashi et al., 2007, 2008; Tatsumi et al., 2008)、火山フロントと背弧側の地殻の厚さ分布には相関があり過去のリフティングが検出されたこと(Kodaira et al.
KAIHO, Yuka +15 more
core
Abstract Coral biomineralization typically yields either aragonite (in most scleractinians) or calcite (in octocorals), yet the drivers of this polymorph choice remain debated. Here we report a deep‐sea gorgonian coral (Callogorgia sp.) with a coaxial calcite–aragonite–calcite skeleton.
Miaohong He +8 more
wiley +1 more source
Undersea volcano production versus lithospheric strength from satellite altimetry [PDF]
All seamount signatures apparent in the SEASAT altimeter profiles were located and digitized. In addition to locating the seamount signatures, their amplitudes were also estimated. The second phase consisted of determining what basic characteristics of a
Sandwell, D. T., Tapley, B. D.
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Abstract Ocean bottom pressure recordings are a key observation for both ocean circulation and seafloor geodesy. New self‐calibrating instruments may solve a long‐time issue of instrument drift, allowing new high precision observations. However, instruments on the seafloor may settle over days to months, potentially contaminating results.
Nicholas Harmon +8 more
wiley +1 more source
Rising demand for minerals and metals, including for use in the technology sector, has led to a resurgence of interest in exploration of mineral resources located on the seabed.
Kathryn A. Miller +4 more
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Seamounts represent crust-mantle activities and are areas of petrological deviations, biodiversity, seismicity and hydrothermal events. An estimated ~50 million tons/year of basalts are required to produce seamounts suggesting intense oceanic volcanism.
Iyer, S. D. +3 more
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2. Wochenbericht SO201/1b [PDF]
SO201 Leg 1b KALMAR Wochenbericht Nr. 2 (18.06.
Werner, Reinhard
core
Abstract Biogeochemical reactions produce volatile halocarbons and semi‐ to nonvolatile dissolved organic halogens (DOX) in marine systems. The former has a large influence on atmospheric chemistry, but little is known about DOX. Here, we present depth profiles of dissolved organic bromine (DOBr) and ‐iodine (DOI) isolated from the Central North ...
Leanne C. Powers +3 more
wiley +1 more source
Les montagnes du Schakalsberg du Sperrgebiet en Namibie sont considerees comme partie integrante de la Ceinture Neo proterozoique de Gariep (745-550 Ma), qui est connue pour le gisement de metaux de base de Rosh Pinah (30 millions de tonnes, Zn-Pb-Cu-Ag).
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