- About
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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
Search results
Showing 31 to 40 of 1009 (0.014 seconds)| 31 |
Effect of bubbly liquid on underwater sound transmission楊兆麟, Yeung, Siu-lun, Patrick. January 1998 (has links)
published_or_final_version / Mechanical Engineering / Doctoral / Doctor of Philosophy
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Wave-induced sound in the oceanGuo, Y. P. January 1986 (has links)
No description available.
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Subsea inspection, non-destructive testing and cognitive dysfunction in commercial diversLeach, John W. P. January 1986 (has links)
No description available.
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Investigations into the possibility of using the echo spectrum as a method of classifying fish targetsSmith, Andrew Ritchie January 1997 (has links)
No description available.
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Profile monitoring and object recognition using image processingWu, Ji January 1992 (has links)
No description available.
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Hardware efficient beamforming and its application to an underwater acoustic data linkPowell, D. G. January 1991 (has links)
No description available.
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Development and simulation of signal processing algorithms for high resolution wide band direction finding and multipath cancellationLumsdon, Parivash January 1995 (has links)
No description available.
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Scour around pipeline under marine environmentsIbrahim, A. A. January 1986 (has links)
No description available.
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Earthmoving in submerged sandsGrinsted, T. W. January 1985 (has links)
No description available.
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Distribution of deep-sea bioluminescence across the Mid-Atlantic Ridge and Mediterranean Sea : relationships with surface productivity, topography and hydrographyCraig, Jessica January 2012 (has links)
Bioluminescence is widespread in the deep sea. In this study, the density of bioluminescent zooplankton (BL) in the deep Mediterranean Sea (MS) and at the Mid- Atlantic Ridge (MAR) was measured using low light video cameras, including a novel Image intensified Charge coupled device for Deep-sea research (ICDeep). Sampling across the MS was undertaken to assess the potential optical interference from bioluminescent zooplankton at sites under consideration for the construction of a large volume deep-sea neutrino telescope. This revealed a general decrease in deep pelagic BL densities from the western to the eastern MS. Deep mesopelagic (500- 1000 m depth) BL density was significantly correlated (p<O.Ol) to Chlorophyll a concentrations in overlying surface waters. Investigation of temporal variation across the Ionian Sea revealed a deep (500-2400 m depth) peak in BL density on the western side, present in the autumn (mean BL density: 14.92 m-3) and absent the following spring (4.52 rrr"). Deep water of Adriatic origin flows into this region and may seasonally affect the supply of organic material, increasing deep zooplankton populations. Near-bed (0-400 m above bed, mab) BL density in the MS was found to decrease exponentially with seafloor depth; by a factor of 4.2 every 1000 m. BL densities were consistently lower in the MS than at the MAR. On the MAR, at ca. 2500 m depth, an investigation of altitude effects within the near seafloor region revealed a weak increase (0.016 m-3 mab': p<O.OOl) in BL and inacroparticle (>430 urn] densities from 100 to 5 mab attwo sites south of the Charlie-Gibbs Fracture Zone. At 2500 m depth on the MAR, a rate of naturally occurring bioluminescent events was observed to be 155 times higher (3.1 min+) than literature based predictions, prompting a reappraisal of the visual environment in relation to complex topography of the deep-sea floor.
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