Ciavaglia, Elisa <1976>

The present issue analyses bluefin tuna (Thynnus thunnus) and swordfish (Xiphias glaudis) diet, caught by professional long-line fishing in the middle Adriatic Sea (Pomo pit). These species represent apex predators in pelagic environment that may play key roles in determining food web structure and ecosystem dynamics. The studies about their feedings habits, based upon stomach contents analysis, are important for the comprehension of biological and ecological interaction. Over the years, many s...

Adani, Mario <1977>

No description available.

Kuan, Michela <1976>

Il mar Mediterraneo è un bacino acquifero peculiare per la recente colonizzazione di specie aliene, per l’evento geologico legato alla Crisi di salinità del Messiniano e per l’ampio range di salinità. L’individuazione dei meccanismi di colonizzazione si è incentrata sullo studio morfologico, istologico e molecolare delle specie Asperarca nodulosa ed Anadara demiri (Arcidae-Bivalvia-Mollusca). La ricerca si è basata sulla caratterizzazione morfologica, con utilizzo del microscopio elettronic...

Manak, Davinder Kaur

No description available.

Muli'aumaseali'i, S.

No description available.

Laventure, Reginald S.

The Champlain Sea sediments are the parent materials of some of the most important agricultural soils of Quebec. They contain a high proportion of clay-size particles which are primary minerals derived from igneous and metamorphic rocks. The mineralogy and mode of deposition give rise to unusual properties. The physical properties of these sediments have stimulated many studies of their geotechnical properties but only limited information is available for chemical properties. [...]

Schwerdtfeger, Peter.

Determination of the energy fluxes resulting from incident solar radiation is fundamental to an understanding of the physical conditions pre- vailing at any point on the earth's surface. Comprehensive work on the balance of thermal energy in temperate regions has been performed and reported, particularly by Thornthwaite and Halstead, (TH54). However, results of similar completeness are lacking for oceanic regions, a fact illustrated by the omission of detail for these areas in Budyko's world atl...

Dansereau, Véronique

Current sea-ice models evolve towards higher spatial resolutions and levels of convergence of their numerical solution, which refines their simulated ice deformation fields, while still employing the values of the dynamic parameters used in earlier models. In this work, we investigate the effect of spatial resolution and convergence on the choice of optimal model parameters by comparing drag coefficients and ice compressive and shear strength sensitivity studies conducted with a viscous-plastic ...

Leighton, Patrick

The introduced small Asian mongoose (Herpestes javanicus) is a widespread predator of sea turtle eggs and hatchlings in the Caribbean. I studied the behavioural ecology of mongoose predation on the nests of critically endangered hawksbill sea turtles (Eretmochelys imbricata) in Barbados. Combining short-term field experiments with seven years of hawksbill nesting data, I investigated how mongoose foraging behaviour, antipredator behaviour and landscape use explain the spatial and temporal patter...

Tufaro, Francis.

Eggs of many organisms contain a store of mRNA which supports protein synthesis during early embryonic development and various regions of the egg cytoplasm are not identical with respect to developmental potential. I investigated the extent to which sea urchin embryogenesis results from a progression of developmental events directed by the embryo, or an expression of a pre-formed maternal program. By the use of two-dimensional electrophoresis I demonstrated that cellular determination during emb...

DeTracey, Brendan

An uncoupled, modified Hibler ice model has been applied to the Gulf of St. Lawrence for three different winters of varying severity, in order to examine interannual sea ice variability. The simulation was initialized with observed November sea surface temperatures, and forced by weekly geostrophic winds, monthly averaged meteorological data and model geostrophic surface currents. / Results showed a general correlation with observations, reproducing differences in the sea ice cover between the y...

Crocker, Gregory B.

No description available.

Seol, Jiwoong, Koh, Dongyeon, Cha, Minjun, Lee, Huen, Lee, Youngjoo, Kim, Jihoon

The chloride anion is known to be the most abundant salt ion in sea water. At the regions such as ODP Sites 1249 and 1250 the highly enriched chloride concentration is observed in a zone extended from near the sediment surface (~1 mbsf) to depths about 25 mbsf. Here, we designed the in-situ electric circuit system for measuring chloride concentration within reliable accuracy. In the cylindrical cell the 5-10 tubes having holes on the wall and electrodes were equipped around clay mixture. Th...

Pritchett, John W., Garg, Sabodh K.

We have developed a one-dimensional numerical computer model (simulator) to describe methane hydrate formation, decomposition, reformation, and distribution with depth below the seafloor in the marine environment. The simulator was used to model hydrate distributions at Blake Ridge (Site 997) and Hydrate Ridge (Site 1249). The numerical models for the two sites were conditioned by matching the sulfate, chlorinity, and hydrate distribution measurements. The constrained models were then used to in...

Chang, Biao

Sea level rise (SLR) is one of the most damaging impacts associated with climate change. The objective of this study is to develop a comprehensive framework to identify the spatial patterns of sea level in the historical records, project regional mean sea levels in the future, and assess the corresponding impacts on the coastal communities. The first part of the study suggests a spatial pattern recognition methodology to characterize the spatial variations of sea level and to investigate the sea...

Hordnes, Ivar

Tip vortices produced by marine propellers can be suppressed by attaching tip devices to the propeller blades, which will obstruct the roll-up process and reduce the strength of the vortices. This will decrease the induced drag on the blades and delay onset of the cavitation associated with the low pressure near the core of the vortices. However, most of the previously tested tip devices have suffered large drag penalties due to the added parasite drag of the device, which have resulted in...

James, Zachary D.

Climate modelling and high-latitude marine navigation require improved information on sea-ice floe extents and dynamics. New satellite sensors provide raw data of this nature but the volume of information makes human analysis impractical. To address this problem, a software system for automatic tracking of sea-ice floes in satellite imagery has been designed and evaluated. Using a recurrent neural network model, experiments were conducted to discover suitable design parameters. Simulated imagery...

Cserjesi, Peter

The structure and gene expression of a number of metallothionein (MT) genes of the sea urchin Lytechinus pictus were characterized. The MT genes in this species are members of a small gene family composed of 7 to 10 copies per haploid genome. A genomic library was constructed and 81 clones containing MT sequences were isolated of which 8 were analyzed. The complete sequence of one clone (LpMT1) and the promoter region of 7 others was determined. LpMT1 encodes a primary transcript of 3042 bp comp...

Dixit, Bharat

No description available.

Lemieux, Jean Francois

This thesis presents the development of a high-resolution viscous-plastic (VP) sea ice model. Because of the fine mesh and the size of the domain, an efficient and parallelizable numerical scheme is desirable. In a first step, we have implemented the nonlinear solver used in existing VP models (referred to as the standard solver). It is based on a linear solver and an outer loop (OL) iteration. For the linear solver, we introduced the preconditioned Generalized Minimum RESidual (p...

Younglao, Deborah

No description available.

Sim, Ryan

Numerous studies project that climate change will accelerate the rise in global sea levels, leading to increased coastal inundation, greater potential damage from storm surge events, beach erosion and other coastal impacts which threaten vital infrastructure and facilities that currently support the economies of island nations. There is a broad consensus amongst experts that small island developing states (SIDS) face the greatest risk to the projected impacts of climate change. Unfortunately, ...

Yu, Peter

The mapping of sea ice is an important task for understanding global climate and for safe shipping. Currently, sea ice maps are created by human analysts with the help of remote sensing imagery, including synthetic aperture radar (SAR) imagery. While the maps are generally correct, they can be somewhat subjective and do not have pixel-level resolution due to the time consuming nature of manual segmentation. Therefore, automated sea ice mapping algorithms such as the multivariate iterative region...

Mihailovici, Cristina Steliana

The scope of this thesis is to searching the potential ofthe maritime traffic in the Black Sea, the good application of the INCOTERMS in this region and the opportunities of maritime transport with the others seas. The research project conducted in this thesis uses qualitative methods: interviews with people that working in the maritime transport in the Black Sea that were made through e-mail to get a practical view on the topic, statistics and studies makes by me in the practice. The results in...

Pennsäter, Maria

Seawater and wastewater all around the world contain toxins and pollutants, not the least drug residues, including hormoneswhich disturb the ecosystems and antibiotics with growing multi-drug resistance of bacteria as a result. The effects onecosystems and mankind can be severe and with this general fact the need for proper analysis devices increases. This haspromoted further studies to establish devices for detection of analytes with high selectivity and high sensitivity. In this thesis Ipresen...

Miravalles Diez, Daniel

The increasing interest on the Arctic areas has brought us new challenges that have not been met before in other locations due to the peculiarities of these latitudes. In this thesis the interaction between sea-ice and berm breakwaters has been studied. This work introduces new variables to the study of this interaction that have not been reported before, including higher interaction velocities and 3D effects, by varying the ice concentrations and sizes of the ice floes. The other variables test...

Isaac, Merkevia

Sea-level rise is one of the most certain impacts of climate change that will have major long-term implications for tourism in the Caribbean. Sea-level rise will impact coastal tourism through inundation and erosion, damage to tourism infrastructure, (e.g., hotels/resorts, transportation) and also essential coastal resources (e.g., beaches and coral reefs). The study examines the implications of projected scenarios of sea-level rise for tourism in St. Lucia. Using geospatial analysis that inte...

Hansson, Lina

The Gaoping Slope, off the south west coast of Taiwan, is a tectonically active sedimentation environment attaining most of its sediment from the Gaoping River. This study examines sediment cores from two localities at 375 m and 495 m water depth by using X-radiography, Grain size- and 210Pb analysis, with the purpose of comparing the sedimentation environment at the two sites and examine how they were both affected by high sediment delivery during typhoon Morakot.The shallow site has coarse bio...

Heinicke, Susanne

Seismic interpretation of 13 lines has been conducted in the Hammerfest and Tromsø basin areas in the southwestern Barents Sea. Based on interpretations, a 3D Geomodel comprising 10 layers has been constructed. Depth conversion of the Geomodel was accomplished after building of the herein required velocity model. Paleobathymetric reconstruction was performed for 9 time intervals from Top Oxfordian/Late Jurassic until Intra Sotbakken/Base Pliocene utilizing SINTEF´s basin modeling tool SEMI Paleo...

Manson, Daniel

It has become commonplace for asylum seekers in Canada to be represented by politicians and popular media as bogus refugees out to abuse the generosity of Canadians. This process has involved the inversion of the notion that the risk faced by asylum seekers warrants state protection. Instead it is the asylum seeker that is presented as a risky border crosser, often provoking renewed state and public interest in fortifying Canadian borders. This thesis will argue that ‘fear’ has played a crucial ...

Sjöberg, Kjell

The river lamprey (Lampetra fluviatilis) was previously caught in large numbers in Europe when migrating up in the rivers during autumn for spawning the next spring. It was used as food and was also used as bait in cod fishing in the North Sea. Today the river lamprey has decreased in numbers over much of it’s distribution range, but in the Baltic Sea area, the population is still at a fairly good level, and fishing for lampreys as food (a tradition going back to at least the fifteenth century) ...

Jarméus, Christoffer

The aim of this study was to compare the production of biodiesel or biogas from macro algae harvested from the Baltic Sea from an energy perspective. The macro algae were considered to be harvested from an area along the southern coast of Sweden, between Malmö and Simrishamn. The gathering of algae is an attempt to reduce the current eutrophication in the Baltic Sea by removing nutrients that the algae have assimilated. The algae also contain some amounts of heavy metals, so the amounts of heavy...

Xia, Peiyao

As a part of the Cyrosphere ecosystem, Arctic sea ice is one of the focal points when studying Arctic climate change. Arctic sea ice image has been documented by remotely sensed data since the 1970s. By examining these data, some climate patterns can be revealed. In this research, Arctic region is divided into 9 sections to analyze the regional differences of the ice coverage and variability. Data used are bootstrapped 1979 to 2006 SSM/I and SMMR images from NSIDC to perform a time series analys...

Palmlöv, Erik

No description available.

Franck, Martin, Holm Roos, Malin

This study was conducted with the purpose of furthering the knowledge of collisionsinvolving Swedish icebreakers in the Baltic Sea. It strived to identify the causes and directeffects of this type of collision. It also sought to establish if regulations and operationalguidelines, governing Swedish icebreakers and icebreaker assistance, were sufficient and ifthey were being adhered to.The method used to accomplish this was a qualitative literature study of all data regardingSwedish icebreaker col...

Pegas, Fernanda V.

This study evaluated how three conservation approaches implemented by the Brazilian Sea Turtle Conservation Program (the TAMAR Project) are related to local support for sea turtle conservation in Praia do Forte, Brazil. Four species of sea turtles nest in Praia do Forte. In Praia do Forte, locals harvested sea turtles for their meat and eggs on a regular basis to support subsistence needs. The three conservation strategies analyzed are employment opportunities and alternative sources of income f...

Schrader, Wendy Jane

Relating the behavior of predators to prey density is an important aspect of foraging theory. Changes in prey accessibility may have contributed to a greater-than 80% decline in Steller sea lions (Eumetopias jubatus) throughout the western portion of their range during the last 30 years. A new method was developed for inferring prey accessibility to juveniles of this otariid, from observable features of diving and ranging behavior. Seventeen juveniles (9F, 8M) were monitored in multiple seasons ...

Stover, Christina Lee

A new high-resolution climatology and volumetric θ-S census (Δθ = 0.1°C, ΔS = 0.01) is constructed for the Ross Sea. Property maps (potential temperature, salinity, and dissolved oxygen) along 40 depth levels and 21 neutral density (γn) surfaces are analyzed. A major inflow of Antarctic Surface Water (AASW) is observed branching off the westward-flowing coastal current near Cape Colbeck. One portion continues poleward hugging the coast while the other follows the shelf break to...

Wei, Chih-Lin

Macrobenthos of the deep, northern Gulf of Mexico have been sampled with large box cores along multiple cross-depth transects extending from depths of 200 m out to 3700 m. Four major depth zones have been identified based on the faunal similarities (beta diversity) between geographic sites, with the two intermediate-depth zones being divided horizontally down the middle of the basin. The input of food resources appears to control the observed patterns. Each zone and sub-zone can be described by ...

Karakaya, Dilek

This thesis analyzes the Organization of Black Sea Economic Cooperation and Turkey&#039 / s role in this international organization. This thesis argues that contrary to scholars who view institutional weaknesses of BSEC as the main reason of its failure in achieving sufficient level of cooperation among its members, political problems emanating from member states constitute the main reason of BSEC&#039 / s ineffectiveness as an international organization. There are six chapters of this thesis. F...

Derebay, Saygin Kemal

The swell waves which are an important component of wind generated waves have significant effects on small craft and fisheries. The swell wave climate has an important role in the design and operation of fishing harbors and harbors for small craft. Despite this fact the swell wave climate is not well known for the Turkish coasts. The purpose of the present study was to identify the swell wave climate along the Aegean and Mediterranean Sea coastline of T&uuml / rkiye. For this purpose wind and sw...

Caban, Seckin

Winds and wind wave climate are two important phenomena for Black Sea basin. Wind wave climate has an important role on design of coastal structures and naval transportation. Despite this fact the wind wave climate is not well known for the Turkish coasts because of limited studies on this subject. The purpose of the present study was to further understand wind and wind wave climate along the Black Sea coastline of T&uuml / rkiye. For this purpose wind and wind wave data for every 65 months is o...

Celebi, Billur

In this thesis, the distribution and state of Posidonia oceanica meadows along the Turkish coast of the north eastern Mediterranean was investigated. The study area was a unique site due to the presence of eastern geographical limit of Posidonia oceanica meadows in Mediterranean Sea. It was aimed to assess the possible reasons of the absence and/or regression in relation to environmental changes. The study was conducted from September 2004 to January 2007 in 5 main regions between Anamur/Mersin ...

Berkun, Ugur

The swell waves which are an important component of wind generated waves have significant effects on small craft and fisheries. The swell wave climate has an important role in the design and operation of fishing harbors and harbors for small craft. Despite this fact the swell wave climate is not well known for the Turkish coasts. The purpose of the present study was to identify the swell wave climate along the Black Sea coastline of T&uuml / rkiye. For this purpose wind and swell wave data for a...

Uzel, Meltem

This thesis attempts to describe the role of the British Admiralty&rsquo / s oil related naval policies from 1909 to 1914 in the formation of British oil diplomacy in the northern hinterlands of the Persian Gulf. On the basis of this attempt, it examines the precise beginning of oil security concerns of Britain and its articulation on the southwest Persian and Mesopotamian oil basins in light of the transition of the Royal Navy from coal to oil burning internal combustion engines. It delineates ...

Reath, Kevin Andrew

The Salton Sea Geothermal Field is an active 20 km2 region in southern California, which lies along the Calipatria Fault; an offshoot of the San Andreas Fault. Several geothermal fields (including the Davis-Schrimpf and Sandbar fields) and ten power plants generating 340 MW lie within this region. To better understand the mineral and thermal distribution of the surface, hyperspectral thermal infrared (TIR) data were acquired by The Aerospace Corporation using the Spatially Enhanced Broadchannel ...

Hassouna, Djehane Abdel Hay

Writers have relentlessly acknowledged the influence of water on their poetic vision. The Romantic malaise found its solace in the proximity of a body of water. Offering the same ambiguity as the human character, the influence of the sea can be both beneficial and detrimental. My dissertation discusses the multivalence of a Romantic Sea in French, Italian and Spanish Literatures. Through a thematic as well as a comparative approach, I study numerous transnational examples revolving around the im...

Ana Filipa Moreno Contente Costa

No description available.

Rudd, Bethany A

No description available.

In undersea remote sensing change detection is the process of detecting changes from pairs of multi-temporal sonar images of the seafloor that are surveyed approximately from the same location. The problem of change detection, subsequent anomaly feature extraction, and false alarms reduction is complicated due to several factors such as the presence of random speckle pattern in the images, variability in the seafloor environmental conditions, and platform instabilities. These complications make ...