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Sinking particle properties from polyacrylamide gels during the KErguelen Ocean and Plateau compared Study (KEOPS): Zooplankton control of carbon export in an area of persistent natural iron inputs in the Southern Ocean
Sinking particle properties polyacrylamide gels during the KErguelen Ocean Zooplankton control area persistent natural iron inputs the Southern Ocean
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2014/4/21
The Kerguelen ocean and plateau compared study (KEOPS) examined the origin of elevated phytoplankton biomass in naturally iron-fertilized waters over the Kerguelen plateau during midsummer (January-Fe...
Diel periodicity in both sei whale vocalization rates and the vertical migration of their copepod prey observed from ocean gliders
Diel periodicity whale vocalization rates
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2014/4/18
The daily activity cycles of marine predators may be dictated in large part by the timing of prey availability.
For example, recent studies have observed diel periodicity in baleen whale vocalization...
Monitoring and Observatories: Multidisciplinary, Time-Series Observations at Mid-Ocean Ridges
China shipping volcanoes geochemistry and biology hyperplasia of the earth's crust
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2015/7/22
Mid-ocean ridges represent one of the few environments where it is possible to directly and regularly observe the connectivity among tectonic, volcanic, geochemical, and biological processes. This int...
Ridge-Hotspot Interactions: What Mid-Ocean Ridges Tell Us About Deep Earth Processes
The earth heat engine thermal transfer heat material buoyancy
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2015/7/22
Earth is a thermal engine that dissipates its internal heat primarily through convection. The buoyant rise of hot material transports heat to the surface from the deep interior while colder material s...
Mantle Melting Beneath Mid-Ocean Ridges
Plate tectonics the earth's surface the magma oceanic crust
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2015/7/22
The plate-tectonic revolution was initially "kinematic"—a description of plate motions across Earth's surface. Plate tectonics is now recognized as the surface manifestation of a greater process—circu...
Drilling the Crust at Mid-Ocean Ridges: An "In Depth" Perspective
Basalt sediments oceanic crust
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2015/7/22
In April 1961, 13.5 m of basalts were drilled off Guadalupe Island about 240 km west of Mexico's Baja California, together with a few hundred meters of Miocene sediments, in about 3500 m of water. Thi...
Riverine input of macronutrients, iron, and organic matter to the coastal ocean off Oregon, U.S.A., during the winter
Riverine input macronutrients iron organic matter ocean off Oregon U.S.A. during the winter
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2014/5/5
Three cross-shelf transects were conducted off northern Oregon in February, 2003, coincident with flooding of Coast Range rivers, to assess the riverine impact on coastal ocean biogeochemistry. During...
Modeling vertical excursions of the redox boundary in sediments: Application to deep basins of the Arctic Ocean
Modeling vertical excursions redox boundary in sediments deep basins of the Arctic Ocean
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2014/5/4
A diagenetic reaction-transport model was used to simulate how the sediment redox boundary migrates in response to persistent or episodic changes in the deposition flux of degradable organic matter an...
Zinc availability and alkaline phosphatase activity in Emiliania huxleyi: Implications for Zn–P co-limitation in the ocean
Zinc availability alkaline phosphatase activity
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2014/4/23
Zinc (Zn) serves as a cofactor in several extracellular phosphatases, which allow microorganisms to acquire
phosphorus from organic P compounds. In oligotrophic ocean water, where both phosphate and ...
Metabolic poise in the North Atlantic Ocean diagnosed from organic matter transports
Metabolic poise North Atlantic Ocean diagnosed organic matter transports
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2014/5/19
Recently there has been discussion about the metabolic state of the ocean, with arguments questioning whether the open ocean is net autotrophic or net heterotrophic. Accurately determining the metabol...
Mechanisms maintaining sympatric distributions of two ladyfish (Elopidae: Elops) morphs in the Gulf of Mexico and western North Atlantic Ocean
sympatric distributions two ladyfish the Gulf of Mexico western North Atlantic Ocean
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2014/5/19
Two morphs of ladyfish exist in the western North Atlantic and adjacent waters: Elops saurus, a high-count morph (79-87 myomeres or vertebrae) in the north, and Elops sp., a low-count morph (73-78 myo...
Use of Keeling plots to determine sources of dissolved organic carbon in nearshore and open ocean systems
dissolved organic carbon ocean systems
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2014/5/14
Abstract—We apply a Keeling mixing model commonly used in atmospheric sciences to oceanic
dissolved organic carbon (DOC)
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C and concentrations to demonstrate that DOC distribution across
spatial...
Ultraviolet radiation blocks the organic carbon exchange between the dissolved phase and the gel phase in the ocean
Ultraviolet radiation blocks the dissolved phase
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2014/5/21
Dissolved organic carbon (DOC) is one of the major reservoirs of active organic carbon on Earth. Although the
bulk of the marine DOC pool is largely composed of small refractory polymeric material, n...
Does 234Th/238U disequilibrium provide an accurate record of the export flux of particulate organic carbon from the upper ocean?
234Th/238U disequilibrium provide accurate record particulate organic carbon the upper ocean
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2014/5/20
The magnitude of the flux of biogenic particulate organic carbon (POC) exported from the surface waters of the world ocean and remineralized at depth is critical to constraining models of the global c...
Trophic relationships among Southern Ocean copepods and krill: Some uses and limitations of a stable isotope approach
Southern Ocean copepods kril
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2014/5/20
The use of stable isotopes to study food webs has increased rapidly, but there are still some uncertainties in their
application. We examined the d
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N and d
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C values of Antarctic euphausiids...