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Organic phosphorus in marine sediments : chemical structure, diagenetic alteration, and mechanisms of preservation
(Massachusetts Institute of Technology, 2000)
Phosphorus, an essential nutrient, is removed from the oceans only through burial with marine sediments. Organic phosphorus (Prog) constitutes an important fraction (ca. 25%) of total-P in marine sediments. However, given ...
Mass, heat and nutrient fluxes in the Atlantic Ocean determined by inverse methods
(Massachusetts Institute of Technology, 1988)
Inverse methods are applied to historical hydrographic data to address two aspects of the general circulation of the Atlantic Ocean. The method allows conservation statements for mass and other properties, along with a ...
The tectonics and three-dimensional structure of spreading centers--microearthquake studies and tomographic inversions
(Massachusetts Institute of Technology, 1987)
Two-thirds of the Earth's surface has been formed along a global system of spreading centers that are presently manifested in several different structural forms, including the classic rift valley of the Mid-Atlantic Ridge, ...
Crustal accretion and evolution at slow and ultra-slow spreading mid-ocean ridges
(Massachusetts Institute of Technology, 2001)
Half of the ocean crust is formed at spreading centers with total opening rates less than 40 km/Myr. The objective of this Thesis is to investigate temporal variations in active ridge processes and crustal aging at ...
Observations and modelling of deep equatorial currents in the central Pacific
(Massachusetts Institute of Technology, 1988)
Analysis of vertical profiles of absolute horizontal velocity collected in January 1981, February 1982 and April 1982 in the central equatorial Pacific as part of the Pacific Equatorial Ocean Dynamics (PEQUOD) program, ...
Fluid flow and sound generation at hydrothermal vent fields
(Massachusetts Institute of Technology, 1988)
Uranium-series radionuclide records of paleoceanographic and sedimentary changes in the Arctic Ocean
(Massachusetts Institute of Technology, 2009)
The radionuclides ²³¹Pa and ²³⁰Th, produced in the water column and removed from the ocean by particle scavenging and burial in sediments, offer a means for paleoceanographers to examine past dynamics of both water column ...
Prediction of continental shelf sediment transport using a theoretical model of the wave-current boundary layer
(Massachusetts Institute of Technology, 1987)
This thesis presents an application of the Grant-Madsen-Glenn bottom boundary layer model (Grant and Madsen, 1979; Glenn and Grant, 1987) to predictions of sediment transport on the continental shelf. The analysis is a ...
A study of the remineralization of organic carbon in nearshore sediments using carbon isotopes
(Massachusetts Institute of Technology, 1986)
A study of the remineralization of organic carbon was conducted in the organic-rich sediments of Buzzards Bay, MA. Major processes affecting the carbon chemistry in sediments are reflected by changes in the stable carbon ...
Particle flux in the Western Black Sea in the present and over the last 5,000 years : temporal variability, sources, transport mechanisms
(Massachusetts Institute of Technology, 1987)