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Diver selection and performance monitoring for deep (#>#300 msw) working divesBrooke, Samuel T. January 1989 (has links)
No description available.
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Aggregations of Arctic deep-sea scavenging amphipods at large food falls = Ökologische Untersuchungen nekrophager Amphipoden in der arktischen Tiefsee /Premke, Katrin. January 2006 (has links)
Univ., Diss.--Bremen, 2003. / Enth. außerdem 4 Originalpublikationen.
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Self deployable deep sea moorings /Berteaux, H. O. Kery, S. M. Walden, R. G. January 1900 (has links)
"January 1992." / "Technical report." "Funding was provided by the Office of Naval Research through Contract no. N00014-90-C-0098." Includes bibliographical references (p. 37-38).
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On the abyssal temperatures of the world oceansOlson, Boyd Ellertson. January 1900 (has links)
Thesis--Oregon State University. / Photocopy of typescript. Ann Arbor, Mich. : Xerox University Microfilms, 1976. -- 21 cm. Bibliography: leaves 126-129.
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Reliability assessment of foundations for offshore mooring systems under extreme environmentsChoi, Young Jae, January 1900 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 2007. / Vita. Includes bibliographical references.
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Ecology, physiology, and phylogeny of subseafloor thermophiles from mid-ocean ridge environments /Summit, Melanie. January 2000 (has links)
Thesis (Ph. D.)--University of Washington, 2000. / Vita. Includes bibliographical references (leaves 158-185).
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Eguchipsammia fistula Microsatellite Development and Population AnalysisMughal, Mehreen 12 1900 (has links)
Deep water corals are an understudied yet biologically important and fragile ecosystem under threat from recent increasing temperatures and high carbon dioxide emissions. Using 454 sequencing, we develop 14 new microsatellite markers for the deep water coral Eguchipsammia fistula, collected from the Red Sea but found in deep water coral ecosystems globally. We tested these microsatellite primers on 26 samples of this coral collected from a single population. Results show that these corals are highly clonal within this population stemming from a high level of asexual reproduction. Mitochondrial studies back up microsatellite findings of high levels of genetic similarity. CO1, ND1 and ATP6 mitochondrial sequences of E. fistula and 11 other coral species were used to build phylogenetic trees which grouped E. fistula with shallow water coral Porites rather than deep sea L. Petusa.
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Forward seismic modelling and spectral decomposition of deepwater slope deposits in outcrop and subsurfaceSzuman, Magdalena Katarzyna January 2009 (has links)
This project aimed to constrain the interpretation uncertainties associated with reflection seismic data of deep-water slope deposits. The basic premise of the project is that seismic data is affected by small-scale architectural elements and even conventional low-frequency data may contain clues of the sub-seismic geometries. These can be decoded by understanding the interaction between internal elements and the seismic wavelet. A series of outcrop-derived forward seismic models was created, representing different types of outcrop based slope deposits. The seismic interpretation of the forward models was based on amplitude analysis supplemented by instantaneous attributes and spectral decomposition. In order to create realistic synthetic seismograms, input models included geometries whose thickness was as low as 1% of the resolution limit. By revealing the influence of small-scale structures on synthetic seismic data at the high end of the spectrum (70Hz to 100Hz), the knowledge of tuning effects and the interaction between interfering reflections at lower frequencies (i.e. 20, 40 and 60Hz) could potentially be significantly improved. The gained experience was then applied to real seismic data. It was proven that small-scale geometries have an additional, highly significant effect on the composite reflection. Because of the inherent non-uniqueness in seismic reflection, the specific seismic forward models of particular outcrop analogues can only be used as guides to the seismic interpretation of the particular architectural elements of a subsurface deposit and not as definite models against which one can definitely pattern match real and modelled seismic data. as burial depth increases, so does the non-uniqueness of the seismic interpretation of seismic data from deposits whose internal geometries are around/below the tuning thickness.
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A Study on Certification Mechanism Design for Deep Sea Water ApplicationsLuo, Wen-yan 03 August 2006 (has links)
Characterized as rich mineral substances, low temperature, few bacteria, and stability with numerous implementation aspects on aquaculture, food, drinking, and leisure, the development of deep sea water (DSW) has become a governmental policy and a new industry. The eastern region in Taiwan owns outstanding pumping DSW conditions and a prosperity on its industry applications is expected if the development project goes well. However, a design on the inspection mechanism is critical to the industry development due to water's indifference characteristics. This study aims at inspection problems relevant with certification mechanism to construct an overall certification operation system. An investigation is designed to understand the current inspection system status while implementation for the use of lab function requirements, inspection operation, and product inspection process considerations. A management conceptual mechanism is also provided for DSW industry development in the future
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Reliability assessment of foundations for offshore mooring systems under extreme environmentsChoi, Young Jae, 1970- 28 August 2008 (has links)
Mooring systems for floating facilities that are used offshore to produce oil and gas, consisting of individual mooring lines and foundations, are currently designed on the basis of individual components and on a case-by-case basis. The most heavily loaded line and anchor are checked under extreme loading conditions (hurricane and loop current) with the system of lines intact and with one line removed. However, the performance of the entire mooring system depends more directly on the performance of the system of lines and foundations rather than on the performance of a single component. In this study, a floating production system design originally developed by the industry consortium, DeepStar, was chosen for study. The mooring system was designed for three different nominal water depths: 1000, 2000 and 3000 m. It is a classic spar with steel mooring lines in 1000 m of water and polyester mooring lines in deeper depths. Based on simulated results of loads on mooring lines and foundations using a numerical model, reliability analyses were conducted using representative probabilistic descriptions of the extreme met-ocean conditions, hurricanes and loop currents, in the Gulf of Mexico. The probability of failure of individual mooring line components during a 20-year design life is calculated first, followed by that of a complete mooring line which consists of top and bottom chains, a steel cable or polyester rope at the middle and a suction caisson foundation, and finally that of the mooring system. It is found that foundations have failure probabilities that are more than an order of magnitude smaller than those for lines under extreme loading. Mooring systems exhibit redundancy in that the failure of the most heavily loaded component during an extreme event does not necessarily lead to failure of the system. The system reliability and redundancy are greater for the taut versus semi-taut systems and is greater for designs governed by loop current versus hurricane events. Although this study concerns about the mooring systems of a classical spar, the methodology of the reliability analysis and the conclusions made in this study may have important implications to the other deepwater mooring systems / text
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