Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 67 for “"Inner shelf"”.
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Dredge spoil dispersion from an inner shelf dump-mound
… of dredge spoil from a dump-mound on the inner shelf in 11-17 m water depth, 3 km offshore from Tauranga Harbour, New Zealand. Graphic and volumetric analysis of bathymetric changes over the dump-mound and its near vicinity, between 1978 and 1988, showed that based on echo-sounding surveys …
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Inner Shelf Circulation in Coastal Virginia: A Data Assimilation Approach
… the tidal and subtidal flow patterns over the inner shelf of the Delmarva Peninsula, located in the Mid-Atlantic Bight of the United States (36.6–38.0 N), north of the Chesapeake Bay. The objective is pursued with a combination of direct measurements and numerical assimilative techniques. The …
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Hydrodynamic variability and bedform dynamics at an inner shelf artificial reef
… hydrodynamics and seabed morphodynamics on the inner continental shelf are having increasing relevance with continued development of near shore structures, offshore energy technologies and artificial reef construction. Characterizing the stresses on and response of the seabed near and around …
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Inner Shelf Circulation off Cartagena De Indias, Caribbean Coast of Colombia
<p>This work studies temporal variability of the inner shelf circulation using experimental data collected near the city of Cartagena de Indias on the Colombian Caribbean Sea, from water depths varying from 7 to 20 m. The analysis has focused in two particular time scales: subtidal and diurnal. The …
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Nearshore and inner shelf sedimentation on the east Coromandel coast, New Zealand
… for possible use of the adjacent continental shelf as a repository for dredge and mining tailings, and extraction of commercial aggregate and mineral deposits. This has raised the question of dynamic links between the continental shelf and local beach systems I and resulting impacts on the …
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Shore-parallel sediment transport by waves and tides in inner shelf waters
In shallow waters the combined action of waves and currents significantly affects the motion of sediment on the bottom, and hence the nature and phase of their interactions with each other contribute to the shaping of the beach. Using pressure and velocity data collected just outside the surfzone …
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Seasonal variability of sediment oxygen demand and biogeochemistry on the Namibian inner shelf
The Central Benguela inner shelf is characterised by hypoxic to anoxic sub-thermocline water conditions on a semi-permanent basis. Historical understanding of the incidence of hypoxia is that the inner shelf area off Namibia is one of the main areas of formation of low oxygen water (LOW) in the …
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Geological mapping of the inner shelf off Cape Town's Atlantic Seaboard, South Africa
The Atlantic Seaboard is an 18 km stretch of coastline located on the Cape Peninsula, South Africa, roughly between the Cape Town suburbs of Mouille Point in the north and Hout Bay in the south. It borders heavy shipping traffic and contains a mix of urban and natural environments including …
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Quaternary Seismic Stratigraphy of the Inner Shelf and Coastal Zone, Southern Delmarva Peninsula, Virginia
… stratigraphic record beneath the Virginia inner shelf is largely unknown. On the adjacent lower Atlantic Coastal Plain of southeastern Virginia, the Pleistocene record consists of seven stacked transgressive sequences, while on the southern Delmarva Peninsula, a series of three …
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The sediment, river plume, and inner shelf variability in a bay with multiple fluvial inputs
… environments where in-situ observations of cross-shelf sediment transport are spatially limited and are difficult to maintain over representative periods of time. How these river plumes respond to environmental conditions, and where sediment is initially deposited from the river plumes are …
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The geology of the diamondiferous inner shelf off Namaqualand between Stompneus Bay and White Point just north of the Buffels River
… the geology and late Quaternary history of the inner shelf just north of the Buffels River off Namaqualand. In this area the inner· shelf is only 2km to 3.5km wide. An "inner-shelf platform" slopes gently (1°) out to -40m. An "inner-shelf slope11 then grades relatively more steeply (2-3°) down …
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Wind-driven circulation on a shallow, stratified shelf
Data from the Coastal Ocean Processes Inner Shelf Study are analyzed to determine atmospheric forcing characteristics and the heat balance of the inner shelf, and are used as motivation for a numerical study of inner shelf circulation during upwelling and downwelling. Variation in meteorological …
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High-Resolution Sequence Stratigraphy of Paleogene, Nontropical Mixed Carbonate/Siliciclastic Shelf Sediments, North Carolina Coastal Plain, U. S. A.
… sands and shell beds (estuarine/lagoon/protected inner shelf facies); clean quartz sands and sandy mollusk-fragment grainstones (shoreface/shallow shelf); phosphatic hardgrounds (current and wave-swept shoreface and shallow shelf); bryozoan and echinoderm grainstones/packstones (storm reworked …
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The effect of stratification on wind-driven, cross-shelf circulation and transport on the inner continental shelf
… from a three-year field program on the inner shelf south of Martha's Vineyard, MA and a numerical model are used to describe the effect of stratification on inner shelf circulation, transport, and sediment resuspension height. Thermal stratification above the bottom mixed layer is shown …
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The effect of stratification on wind-driven, cross-shelf circulation and transport on the inner continental shelf
… from a three-year field program on the inner shelf south of Martha's Vineyard, MA and a numerical model are used to describe the effect of stratification on inner shelf circulation, transport, and sediment resuspension height. Thermal stratification above the bottom mixed layer is shown …
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Circulation of the Western Antarctic Peninsula: Implications for Biological Production
… western Antarctic Peninsula (wAP) continental shelf is characterized by large persistent populations of Antarctic krill (<em> Enphausia superba</em>) and by regions of enhanced concentrations of marine mammals and other predators (hot spots). This study focused on understanding the role of …
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Storm-dominated shelf sedimentation marginal to a delta: an example from the Devonian of southwestern Virginia and eastern West Virginia
… fair-weather deposits of mud rock. The Chemung shelf is envisaged as a very low-gradient (<0.5 ft./mile) clastic ramp extending hundreds of miles toward the craton interior. Transport of sand from the nearshore onto the shelf over distances up to 200 miles was facilitated by storm generated …
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High Resolution Circulation of the Hawkesbury Shelf Region, SE Australia: Mean, Variability and Transport Pathways
… open ocean and coastal waters within continental shelf systems is driven by complex circulation processes making it hard to measure and observe. They are highly productive regions, sustaining marine ecosystems and are often nursery areas for many organisms, providing the basis for a variety of …
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