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Melting history of the Patagonian Ice Sheet during Termination I inferred from marine sediments
Patagonian Ice Sheet Termination I melting history Al2O3 flux marine sediments
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2017/4/11
To investigate the melting history of the Patagonian Ice Sheet (PIS) during the last deglaciation, we reconstructed
Al2O3 flux in sediments from the Magellanes fjord (53°S) and southern Patagonia (55...
Termination of an Equatorial Jet in a Gulf
Equatorial Jet Gulf
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2009/1/6
Motivated by the observed branching of the Equatorial Undercurrent in the Gulf of Guinea, an idealized model is developed here to examine the termination of an equatorial jet in a gulf. Similarity sol...
Entrainment and the Termination of the Equatorial Undercurrent
Equatorial Undercurrent upper mixed layer
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2009/1/5
An ideal fluid model of the Equatorial Undercurrent is modified by the addition of a specified, cross-isopycnal entrainment of fluid into the upper mixed layer. The entrainment is limited to a narrow ...
Valuable mineral resources are widely distributed throughout the seabed. autonomous underwater vehicles (AUVs) are preferable to remotely-operated vehicles (ROVs) when probing for such mineral resources as the extensive exploration area makes it difficult to maintain contact with operators. AUVs depend on batteries, so their power consumption should be reduced to extend exploration time. Power for conventional marine instrument systems is incorporated in their waterproof sealing. External intermittent control of this power source until termination of exploration is challenging due to limitations imposed by the underwater environment. Thus, the AUV must have a power control system that can improve performance and maximize use of battery capacity. The authors developed such a power control system with a three-step algorithm. It automatically detects underwater operational states and can limit power, effectively decreasing power consumption by about 15%.
surface piercing propeller boundary element method hydrodynamic characteristics
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2011/9/13
Demand for high-speed marine vehicles (HSMVs) is high among both commercial and naval users. It is the duty of the marine vessel’s designer to provide a hull and propulsion system that diminishes drag...
The evolution and termination of an iron-induced mesoscale bloom in the northeast subarctic Pacific
The evolution iron-induced mesoscale bloom
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2014/5/13
We initiated and mapped a diatom bloom in the northeast subarctic Pacific by concurrently adding dissolved iron
and the tracer sulfur hexafluoride to a mesoscale patch of high-nitrate, lo...