Kaskin, Jonathan David

Thesis. 1979. Ocean E.--Massachusetts Institute of Technology. Dept. of Ocean Engineering. / MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING. / Bibliography: leaves 375-376. / Ocean E.

Lisiecki, Lorraine (Lorraine Elissa), 1977-

Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 2000. / Includes bibliographical references (leaves 43-44). / The changing configurations of continents due to plate tectonics is thought to be responsible for some of the variation in climate over the last 600 Ma. Different topological constraints on the oceans may affect their ability to transport heat poleward and change the equilibrium pole-equator temperature of Earth. An ocean model w...

Ji, Ming

Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1997. / Includes bibliographical references (leaves 199-203). / by Ming Qi. / Sc.D.

Chen, Tianrun

Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2009. / Includes bibliographical references (p. 165-175). / When an acoustic field propagates through a multimodal waveguide, the effect of variations in medium properties induced by 3D random inhomogeneities accumulates by multiple forward scattering over range. This causes significant random fluctuations in the received field and greatly affects underwater acoustic sensing and communication systems, such a...

Haven, Scott

Thesis (S.M.)--Joint Program in Applied Ocean Science and Engineering (Massachusetts Institute of Technology, Dept. of Mechanical Engineering; and the Woods Hole Oceanographic Institution), 2012. / Cataloged from PDF version of thesis. / Includes bibliographical references (p. 117-119). / The Acoustic Doppler Current Profiler (ADCP) is a proven technology which is capable of measuring surface wave height and directional information, however it is generally limited to rigid, bottom mounted applic...

Nicolaysen, Kirsten E

Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, February 2001. / Includes bibliographical references. / Tectonically active for the past ~160 million years, the igneous basement of the Indian Ocean basin has formed due to complex interactions between mid-ocean ridges and mantle plumes. Plateaus, ridges and islands associated with the Kerguelen hotspot, the world's second largest, oceanic igneous province, dominate the bathymetry of the ...

Fujimori, Jessica E. (Jessica Eileen)

Thesis: S.B., Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences, June 2014. / "May 12, 2014." Cataloged from PDF version of thesis. / Includes bibliographical references (page 20). / We measured IRD fluxes from 22-5 ka BP in two sediment cores from the Scotia Sea using two different methods. The first, commonly used method, uses the linear sedimentation rate (LSR), dry bulk density, and weight percent of IRD in the sample. The second uses ²³⁰ThTh nor...

Came, Rosemarie Evangeline

Thesis (Ph. D.)--Joint Program in Oceanography/Applied Ocean Science and Engineering (Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences; and the Woods Hole Oceanographic Institution), 2005. / Includes bibliographical references. / Minor and trace element records of planktic and benthic foraminifera from Atlantic sediment cores, as well as output from a coupled OAGCM, were used to investigate the magnitude and distribution of the oceanic response to abrupt...

Juliana Marini Marson

During the last 21,000 years, the planet underwent major changes. The atmospheric CO2 concentration increased ∼50% (Monnin et al., 2001) and the mean global temperature increased 4.0±0.8°C until pre-industrial times (Annan and Hargreaves, 2013). As a consequence of this warming, the huge ice sheets that covered North America, Northern Europe and part of Eurasia melted and the polar and subpolar ocean surface received a large amount of freshwater from these retracting ice sheets. The i...

Wlademir Jose de Santis Junior

Experiments with a coupled atmosphere-ocean-sea ice model using idealized topographies were run to investigate aspects of the role that the lateral ocean constraints play in the climate. The experiments consider an idealized planet covered with a constant deep ocean, where one-grid-wide land barriers were gradually added. The series of experiments allowed the investigation of many aspects of the coupled system equilibrium and variability, ending with an evaluation of the effects of the Indonesia...

Kean, Erika Anne

Includes bibliographical references. / This study covered six oceanic regions within the south Atlantic sector of the Southern Ocean during austral summer 2008/2009. Four transects from Cape Town to Antarctica, Antarctica to South Georgia Island and the return reciprocal legs surveyed the following regions, the Subtropical zone (STZ) north of the Subtropical Front (STF), the Northern Antarctic Circumpolar Current zone (N-ACC) from the STF to the Antarctic Polar Front (APF), the Antarctic zone (A...

Mpheshea, Lerato Elizabeth

Includes bibliographical references. / The region below the 5?S latitude is defined here as southern Africa. This region is subject to high inter-annual rainfall variability attributed to the local and remote SST fluctuations. The main purpose of this study is to investigate the unique impact that SST conditions related to ENSO, Benguela Ni?o and subtropical Indian Ocean Dipole (SIOD) has on summer rainfall over southern Africa. To achieve this, a partial correlation method was employed to analy...

Ru-JunHsiao, 蕭如君

碩士 / 國立成功大學 / 系統及船舶機電工程學系 / 102 / In this paper, a position estimation method for precisely tracing the trajectory of ocean surface vessels under the situation of powerless and losing communication ability via the aid of the ocean current solution and nonlinear estimation method is proposed. The method procedure and contributions for the estimation is addressed as follows: First, a group of momentum equations which is not easy to find the exact solution because of its complexity is proposed for ...

González-Gaya, Belén

Tesi realitzada a l'Institut de Diagnòstic Ambiental i Estudis de l'Aigua (IDAEA-CSIC) i a l'Institut de Química Orgànica General (IQOG-CSIC) / The Open Ocean has been recognized as playing a key role on global dynamics of pollutants due to its large coverage of the planet surface, its high degradation potential and its sink and accumulation capacities towards anthropogenic chemicals. Nevertheless, there is a dearth of measurements of contaminants in the Open Ocean lower atmosphere, water column...

Durant, Douglas Troy, 1965-

xiv, 103 p. : ill. (some col.) / Results from a recent mid-ocean ridge tomography study along the fast-spreading, northern East Pacific Rise (EPR) reveal that the axis of mantle upwelling beneath the ridge is skewed with respect to the spreading axis, giving rise to regions of both rise-centered and off-axis mantle melt accumulation. Here, we investigate the effects of off-axis melt accumulation on the architecture of overlying crust as well as off-axis melt delivery on crustal construction alon...

VanderBeek, Brandon

In this dissertation, I use seismic imaging methods to constrain the evolution of the oceanic upper mantle across the Juan de Fuca (JdF) and Gorda plates. This work begins by studying the geometry of the mantle magmatic system and patterns of mantle flow beneath the northern JdF ridge in relation to ridge-parallel changes in accretionary processes. I find that the dynamics of lithospheric rifting exert the primary control on the distribution of shallow mantle melts and variations in crustal thic...

Amollo, Joseph Odhiambo

Analysis of tide gauge sea level observations of varying durations in the southwest Indian Ocean and the East coast of Africa (Lamu, Mombasa, Zanzibar, Durban, Port La Rue and Port Louis) show variability which are related to global, regional time scales, local weather and climatic changes, oceanographic and hydrological forcing that manifest in both short and long time scales. The investigations on the tide gauge sea level observations are conducted through the separation of the total sea level...

Valdés, Valentina

Le zooplancton est un important fournisseur de composés bioréactifs pour les bactéries par l’excrétion. Cependant, l'interaction entre le zooplancton et la boucle microbienne est mal comprise. Sur la base d'une approche expérimentale, nous déterminons le rôle du zooplancton dans le recyclage de N et du P dans la région d'upwelling du chili et dans le pacifique sud tropical occidental (WTSP). Le DON est le principal produit d’excrétion dans des conditions automne/hiver, et l'ammonium et la DOP au...

Kuun, Patrick John

Carapace length, as the best measure of N. marionis body size, is precisely defined. It is shown that N. marionis is a partially protandric hermaphrodite. N. marionis appear to hatch just before April each year, with a little hatching persisting until May. The vast majority of juveniles develop into males. The majority of males transmutate into females in their third year. By April/May the transmutation is probably complete. Reproduction can occur before all male secondary characteristics have b...

Maoyi, Molulaqhooa Linda

Tropical Cyclones are one of the most devastating natural phenomena. Previous attempts to simulate Tropical Cyclones (TCs) over the South West Indian Ocean (SWIO) have used Global Circulation Models (GCMs) with uniform grid. This study examines the capability of a GCM with adaptive grid stretching (CAM-EULAG, hereafter CEU) in simulating the characteristics of TCs over the SWIO. In the study, the CEU model is applied with a fine horizontal grid resolution (0.5°x0.5°) over the SWIO and coarser re...

Merino, Nacho

Les prochaines modèles climatiques comprendront un modèle de calotte polaire afin de tenir en compte la dynamique de la glace et les interactions glace-océans dans ses projections. D'une part, l'océan Austral (SO) pilote l'accélération des glaciers de l'Antarctique via une augmentation de la fonte basale des ice shelves. D'autre part, l'accélération de la décharge de glace de l'Antarctic Ice Sheet (AIS) contribue à la montée du niveau de la mer et est susceptible de devenir le plus grand contrib...

James Hamilton Rockwell, 羅克威‧詹姆斯

碩士 / 國立交通大學 / 企業管理碩士學程 / 104 / The Porter’s five forces analysis is a widely-adopted framework used to analyze the competitive landscape of an industry. The ocean container shipping industry has experienced recent changes which have resulted in fiercer competition, a division between the large and small companies, and eroded profits. One of the major changes is the formation of large, global alliances between the largest competitors in the industry. In looking at this industry through the len...

Parslow, John Stanley

The anomalous phytoplankton seasonal cycle in the Subarctic Pacific has been attributed to grazing control. In simple classical models of the phytoplankton-zooplankton interaction, grazing thresholds are found to be necessary to obtain this type of control. Weathership observations at O.S.P. are analysed to provide a basis for a more realistic model. Phytoplankton are present at O.S.P. in almost uniformly low concentrations (about 0.4 mg Chla.m⁻³), have low photosynthetic efficiency (<0.5 mg C.m...

Eriksson, Lina M.

The 2006 Swedish parliamentary election was a historic election with the largest bloc transfer of voters in Swedish history. The 2002-2006 incumbent Social Democratic Party (S) received its lowest voter support since 1914 as roughly 150,000, or 8%, of the 2002 S voters went to the main opposition, the conservative Moderate Party (M). This became the most decisive factor in ousting S from power after 12 years of rule. As a result, the M-led Alliance (A) with the People's Party (FP), the Center Pa...

Barrier, Nicolas

Le but de cette thèse est d’analyser les impacts de la variabilité atmosphérique grande échelle sur la circulation océanique. Ceci a déjà fait l’objet de nombreuses publications, dans lesquelles la variabilité atmosphérique est analysée en termes de modes de variabilité, déterminés par analyse en composantes principales (EOF en anglais) des anomalies de pression de surface. Ces modes sont l’Oscillation Nord-Atlantic (NAO), le Pattern Est-Atlantique (EAP) et le Pattern Scandinave (SCAN). La décom...

Smati, Hossem Edine

Les forçages physiques conditionnent la discontinuité dans l'espace et le temps (patchiness) du plancton dans l'océan. La thèse s'est basée sur deux exemples. Le premier concerne le nord-ouest des Sargasses où une série temporelle à du macrozooplankton a été analysée à partir du rétro signal acoustique (Sv) mesuré avec un ADCP 153-KHz. Trois types de tourbillons ont été identifiés: un tourbillon cyclonique productif, la périphérie d'un tourbillon "mode-water", et la périphérie d'un tourbillon an...

Sauzède, Raphaëlle

Les travaux présentés dans cette thèse concernent la paramétrisation de la distribution verticale de la biomasse et de la structure des communautés phytoplanctoniques dans l’océan global. Nous avons d’abord développé une méthode neuronale de calibration de la fluorescence en concentration en chlorophylle a ([Chl]) associée à la biomasse phytoplanctonique totale et à trois classes de taille de phytoplancton. Cette méthode, FLAVOR, a été entrainée et validée à l’aide une base de données de ~900 pr...

Closset, Ivia

La biogéochimie de l’Océan austral joue un rôle crucial dans la régulation de la production primaire marine globale en contrôlant la disponibilité des nutriments dans les eaux de surface des basses latitudes. Les variations du cycle du silicium (Si) sont nombreuses et son couplage avec les autres éléments n’est pas encore bien compris dans cet océan. Les résultats issus de deux approches isotopiques différentes suggèrent qu’une pompe de Si active est rapidement initiée au printemps par la transi...

Llort Jordi, Joan

La production primaire (PP) dans l'Océan Austral joue un rôle crucial dans la capacité des océans à absorber le carbon atmosphérique. Elle est caractérisée par une forte limitation en Fer et par un cycle saisonnier très marqué, présentant un bloom planctonique en fin d'hiver, plus ou moins intense selon les régions. Ma thèse est centrée sur la compréhension des mécanismes qui contrôlent ce bloom et sa variabilité, ainsi que sur les éléments, présents et futurs, qui contrôlent son intensité. J'ai...

Maugendre, Laure

Le plancton a un rôle crucial dans le cycle du carbone. Il est donc primordial de projeter son évolution dans le contexte de changement climatique. Une partie des résultats rapportés au niveau des communautés planctoniques montrent une stimulation de la production primaire avec l’augmentation de concentration en CO2 et très peu d’expériences combinant plusieurs facteurs ont été faites. Qui plus est, les expériences ont été réalisées majoritairement dans des conditions naturellement élevées ou en...

Duncan, Murray

Chrysoblephus puniceus is an over-exploited linefish species, endemic to the coastlines off southern Mozambique and eastern South Africa. Over-exploitation and habitat loss are two of the biggest threats to the sustainability of fisheries globally. Assessing the genetic stock structure (a prerequisite for effective management) and predicting climate related range changes will provide a better understanding of these threats to C. puniceus which can be used to improve the sustainability of the fis...

Vumazonke, Lukhanyiso Unam

Demographic parameters and the general biology of the subantarctic shrimp Nauticaris marionis from the Prince Edward Islands were investigated. The carapace length is the most accurate indicator of body size and it was confirmed that N. marionis is a partially protandric hermaphrodite. Gravid females of N. marionis observed mainly in March with negligible hatching persisting until April/May. The majority of juveniles develop into males. Juveniles are characterised by an appendage on the endopodi...

Lemon, Michael R

Approved for public release; distribution is unlimited. / This thesis is intended to be a reference for solid modeling and Computer Aided Design (CAD) tailored specifically for the Naval Postgraduate School's capstone helicopter design course, AA 4306. The goal is to present the use of AutoCAD R13 software as a central design tool throughout the conceptual design phase of the American Helicopter Society (AHS) Graduate Design Competition project. The specifics of AutoCAD that are essential to per...

Schmid, Moritz

Dt. Titel: Vorhersagemodelle für den Einfluss von Süßwasser Einstrom auf Salzwasser Schichten, Wanderbewegung und Lebenszyklen des Zooplankton im Arktischen Ozean: Szenarien und Trends in der Zukunft

I-Kuan Hu, 胡亦寬

碩士 / 國立臺灣大學 / 大氣科學研究所 / 99 / Contrary to conventional wisdom, the Indian Ocean Basin Mode (IOBM), the most notable response over the Indian Ocean after ENSO peak year, has nothing similar to a uniform monopole. Observational evidences show an uneven structure that SST gradient and asymmetric precipitation pattern stand out despite embedded in basin-wide warming. This inhomogeneous component is found to be an inherited feature of the IOBM and plays a vital role to shape up subsequent events over ...

Wu, Yeong-Chyan,

Thesis (Ph. D.)--University of Washington, 1988. / Vita. Bibliography: leaves [389]-419.

Tombul, Serdar.

Thesis (M.S. in Engineering Acoustics and M.S. in Electrical Engineering)--Naval Postgraduate School, March 2007. / Thesis Advisor(s): John Colosi. "March 2007." Includes bibliographical references (p. 81-82 ). Also available in print.

Lee, Craig M.,

Thesis (Ph.D.)--University of Washington, 1995. / Vita. Includes bibliographical references (p. [147]-157).

Li, Changhui,

Thesis (Ph. D.)--Texas A&M University, 2006. / "Major Subject: Physics" Title from author supplied metadata (automated record created on Feb. 23, 2007.) Vita. Abstract. Includes bibliographical references.

Moazam, Farhat.

Thesis (Ph. D.)--University of Virginia, 2004. / Includes bibliographical references (leaves 278-292). Also available online through Digital Dissertations.

Abell, Jeffrey Thomas,

Thesis (Ph. D.)--University of Washington, 2003. / Vita. Includes bibliographical references (p. 148-154).

Luque, Sebastian P.

.

Okada, Hisatake

Hokkaido University (北海道大学) / 博士 / 理学

This paper surveys and interprets the attitudes of scientists to the use of flux adjustments in climate projections with coupled Atmosphere Ocean General Circulation Models. The survey is based largely on the responses of 19 climate modellers to several questions and a discussion document circulated in 1995. We interpret the responses in terms of the following factors: the implicit assumptions which scientists hold about how the environmental policy process deals with scientific uncertainty over...

Losee, James P.

Recent research conducted throughout the Northern California Current (NCC) on the ecology of Pacific salmon (Oncorhynchus spp.) indicates that variable ocean conditions affect the community composition of zooplankton in the nearshore environment which, in turn, can affect the quality of prey for fish, sea birds and mammals. Interannual variability in the quality and composition of the copepod community in the NCC during early marine residency of some Pacific salmon populations is related to sur...

Jiang, Xingjian

The OSU global coupled atmosphere/ocean general circulation model (A/O GCM) has been used to simulate the present (lxCO₂) climate and to investigate a CO₂-induced (2xCO₂) climate change. Previous analysis of the lxCO₂ simulation showed distinct errors in the simulated sea surface temperature (SST) and sea ice which were attributed primarily to the atmospheric GM (AGCM). Analysis of the 2xCO₂ simulation showed that the CO₂-induced warming penetrated into the ocean; this caused a delay in the equi...

Chaichitehrani, Nazanin

The first part of this thesis includes evaluating and developing empirical band ratio algorithms for the estimation of colored dissolved organic matter (CDOM) and dissolved organic carbon (DOC) for SeaWiFS, MODIS and MERIS ocean color sensors for the northern Gulf of Mexico. For CDOM, matchup comparison between SeaWiFS-derived CDOM absorption coefficients and in situ absorption measurements at 412 nm (aCDOM(412)) were examined using the DSa et al. (2006) and the Mannino et al. (2008) algorithms....

Torosian, Rojé, Elmehag, Elin

I dagens samhälle är energi av essentiell vikt. Energi behövs för transport, elektricitet och uppvärmning. Fossila bränslen, som är en begränsad resurs, är idag den dominerande energikällan som används. Allteftersom indu-strier och konsumenter världen över använder mer energi för vardag blir det allt viktigare att belysa hur viktigt det är att minska på den globala efterfrågan på energi. Fossila bränslen behöver ersättas med förnyelsebara energikällor, såsom sol-, vind- och tidvattenkraft, för a...

Looney, Christopher Michael

Thesis (M.S.)--University of Hawaii at Manoa, 2006. / Includes bibliographical references. / vii, 49 leaves, bound ill. 29 cm

Gural, Nicholas D.

No description available.