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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.
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Showing 311 to 320 of 1278 (0.012 seconds)| 311 |
Design, validation and application of a new coastal altimetry strategyPassaro, Marcello January 2015 (has links)
Satellite altimetry has revolutionised our understanding of ocean dynamics thanks to frequent sampling and global coverage. Nevertheless, coastal data have been flagged as unreliable due to land and calm water interference in the altimeter and radiometer footprint and uncertainty in the modelling of high-frequency tidal and atmospheric forcing. This thesis addresses the first issue, i.e. altimeter footprint contamination, presenting ALES, the Adaptive Leading Edge Subwaveform retracker. ALES is potentially applicable to all the pulse-limited altimetry missions and its aim is to process both open ocean and coastal data with the same accuracy using just one algorithm. ALES uses only a portion of the returned echo to estimate sea level and sea state, adapting the width of the estimation window according to the significant wave height. The sea level and the significant wave height estimated by ALES are validated regionally for three different missions: Envisat, Jason-1 and Jason-2. Validation is performed by comparison with in-situ data, i.e. tide gauges and buoys. The results show that ALES is able to provide more reliable 20-Hz data for all three missions in areas where even 1-Hz averages are flagged as unreliable in standard products. The ALES data are applied to improve the analysis of the annual cycle of the sea level in the North Sea-Baltic Sea transition area. The coastal amplitude of the annual cycle estimated from ALES altimetry data is in better agreement with estimations derived from in situ data than the one from the reference data set. In the Indonesian Seas, ALES data are used to cross-calibrate the SAR altimetry product of Cryosat-2 and to derive an empirical sea state bias correction to the SAR altimetry estimations (equal to 5% of the significant wave height), still missing in the official product.
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Haemagglutinins from marine organisms with particular reference to Solieria chordalisTopliss, J. A. January 1981 (has links)
No description available.
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Ocean colour analysis using CZCS dataLawrence, David Hawkesford January 1987 (has links)
No description available.
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Models of large-scale wind and buoyancy driven ocean circulationHines, Adrian January 1997 (has links)
No description available.
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The transmission of water waves under surface obstaclesRobertson, Duncan Neill January 1984 (has links)
No description available.
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Processes of lagoonal sedimentation and patch reef development, Davies Reef, Great Barrier Reef of AustraliaTudhope, Alexander William January 1983 (has links)
No description available.
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Long floating cylinders in three-dimensional random seasBryden, Ian Gordon January 1983 (has links)
No description available.
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Wave forces on cylindersDixon, Anthony Graham January 1980 (has links)
No description available.
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The geology and tectonic evolution of the Western Approaches TroughHillis, Richard R. January 1988 (has links)
No description available.
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Forces on partially submerged cylinders in irregular seasEasson, William James January 1983 (has links)
No description available.
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