Ahiska, Kenan

In this thesis, control and guidance algorithms for unmanned sea surface vehicles are studied. To design control algorithms of different complexity, first a mathematical model for an unmanned sea surface vehicle is derived. The dynamical and kinematical equations for a sea surface vehicle are obtained, and they are adapted to real life conditions with necessary additions and simplifications. The forces and torques effecting on the vehicle are investigated in detail. Control algorithms for under-...

Sancak, Serkan

SeaWiFS was collecting ocean color data since 1997. This means chlorophyll-a data for more than ten years. Since, SeaWiFS Chl-a data is validated for Black Sea this data set can be used for analysis. Nevertheless, the data is not gap free due to cloud effect. One of the main objectives of this work is to obtain a gap free, complete Chl-a data set for the Black Sea. For this purpose DINEOF method will be used.

Senol, Gokberk

The transmission rate and reliability are the most crucial elements of a communication system on sea platforms. In this thesis, the performance of a high speed and reliable communication system that can be used on ship to ship sea platforms will be evaluated. The two ray channel model is used in order to characterize the channel considering the refraction and reflection. Using the channel model, the path loss and the Shannon channel capacities are obtained for different systems. In order to incr...

Abbasova, Tahira

The Caspian Region includes the Caspian Sea and five littoral states: Azerbaijan, Iran, Turkmenistan, Kazakhstan and Russian. 40% of the Caspian coastal zone is arid, 69% of this territory undergone desertification according to international reports. Among the reasons are soil erosion caused by water, wind and irrigation, the salinization of soil, intense bioresources usage, and soil pollution due to oil extraction and production. Desertification is a serious problem, at global, national and loc...

Wu, Ruichao

The methods to predict long term extreme structure responses induced by environmental loads are reviewed. Due to the variability of both environmental condition and response in a given environmental condition, the prediction should be performed statistically. Generally, one should carry out a full long term response analysis, i.e. convoluting the variability of response in a given environmental condition with the variability of environmental characteristics. One may consider the response distrib...

Kumar, G V Krishna

Internal waves (IWs) owe their existence to the stratification in the medium. These waves affect acoustic transmission greatly. Impact of these waves on acoustic transmission in deep water is fairly well understood due to better performance of well-celebrated Garrett-Munk (GM) model. However, in shallow waters, predicting these waves is not as easy, because of interactions with the bottom and surface. Hence two experiments, one during October 2002 and the other during October 2004 were conduc...

Arason, Pórdur

In this thesis anomalous downcore shallowing of paleomagnetic inclinations is interpreted to be caused by sediment compaction. Thus, compaction-induced inclination shallowing may influence tectonic reconstructions that are based on inclinations from deep-sea sediment cores. Progressive downcore shallowing of the remanent inclination was observed in a 120-m section of Plio- Pleistocene sediments at Deep Sea Drilling Project (DSDP) site 578 in the northwest Pacific. Near the top of the section the...

Stanford, Harold Milford

Graduation date: 1971

Griggs, Gary B.

Graduation date: 1969

Ness, Gordon Everett

Surveyor Deep-Sea Channel extends for approximately 700 km over the northern Alaskan Abyssal Plain. It originates near the base of the continental slope opposite Dry Bay and Alsek Strath and terminates in the Aleutian Trench south of Kodiak Island. East of Giacomini Seamount, the axial gradient of the channel is in the order of 10 m/km and its morphology is in agreement with prediction, assuming a depositional equilibrium with channelized turbidity currents. West of Giacomini Seamount, the axial...

Haefner, James W.

Graduation date: 1973

Rossknecht, Gary Francis

Graduation date: 1972

Bilyard, Gordon Richard

Graduation date: 1980

Zintzen, Vincent

The seabed of the Southern Bight of the North Sea is mostly composed of sandy soft sediments. Natural hard substrates like pebbles are rare and only occur locally. Lost cargos or shipwrecks lie on the seabed as results of unintentional processes, but because of their inherent structure, they effectively act as artificial reefs deprived of an a priori defined set of functions. On Belgian waters, 231 shipwrecks and other artificial hard structures are dispersed on the continental shelf. Together w...

Eklöf, Tobias

<p>Title: The Code of the Hero in Ernest Hemingway's The Old Man and the Sea</p><p>Author: Tobias Eklöf</p><p>English C, 2006</p><p>Abstract: By examining the depiction of Santiago, his actions, life style and role models as well as his close relation to the author I show how he grows from an old worn out man into a true hero by following a particular stance towards life; a code. The protagonist's approach to life and being put to the supreme test of overcoming bad luck, through the struggle wit...

Stensland, Hege

A palaeodepositional model and an analysis of the diagenetic evolution of the Upper Triassic Snadd Formation in the Barents Sea are here presented. Attention has especially been given to the pedogenic structures dominating the sediments. The interpretations are based on core logging and thin section analyses including three shallow, stratigraphic wells from the south- western Barents Sea area. The data from the Nordkapp Basin represent a sediment succession of only a few meter thicknesses, and t...

Al-Hajri, Ghanem Mohamed

The following research looks into the concept of sea-air intermodality, a combination of two or more modes of transport for the carriage of goods from origin to destination. The study examines why and how this form of transport evolved to become a viable alternative to the conventional single modes of ocean and air transport. The viability of the sea-air mode depends on various equally important factors which are analysed in depth, with a special emphasis on the sea-air transfer port. fn this co...

Moideen, Hisham

This research was done to develop tools to predict parametric roll motion of ships in regular and irregular sea and provide guidelines to avoid parametric roll during initial design stage. A post Panamax hull form (modified C11 Hull form, Courtesy of MARIN) was used to study parametric roll in ships. The approach of the study has been to simplify the roll equation of motion to a single degree of freedom equation so as to utilize the tools available to analyze the system retaining the non-linear ...

Batchvarov, Kroum Nickolaev

In the early 1980s Bulgarian archaeologists of the newly established Centre for Underwater Archaeology at Sozopol discovered the remains of a post-medieval ship in the southern Bay of Kitten, in the lee of Cape Urdoviza. Between 2000 and 2003, the Institute of Nautical Archaeology at Texas A&M University and a team from the Bulgarian Centre for Underwater Archaeology returned to the site to complete the first excavation of a post-medieval shipwreck in the Black Sea. The well-preserved vessel, lo...

Cunha, Tamar B. Saturen

Thesis (M.S.)--University of Hawaii at Manoa, 2006. / Includes bibliographical references (leaves 28-33). / 50 leaves, bound ill. 29 cm

Vasseur, Erik

Härtill 14 uppsatser

Bäckström, Sverker

Härtill 9 uppsatser. Uppsatserna saknas.

O'Brien, Joseph Roderick

published_or_final_version / Comparative Asian Studies / Master / Master of Arts

Andrade, Olavo Amorim de.

No description available.

Wells, Linton

No description available.

Simmons, Vernon Pitkin

No description available.

Astorquiza Vivar, Gustavo Mario

No description available.

Butler, William Aubrey

No description available.

Pogue, Edward Wayne.

No description available.

Froman, F. David.

No description available.

Horianopoulos, Emmanuel

Propulsion losses are increased by added drag due to steering of the ship. A carefully designed automatic steering control provides the desired heading while it simultaneously minimizes the rudder activity and holds the potentials for reducing propulsive losses. A computer model of the SL-7 containership along with a cascaded controller (one pole, One zero) were coupled to a function minimization subroutine and a sea state generator program. This scheme provided the appropriate controller parame...

Bretschneider, Dale Emil

No description available.

Dreves, Donald A.

No description available.

Jacoby, Lowell Edwin

No description available.

Bornholdt, Robert Alan.

No description available.

Galanis, Minas.

No description available.

Wright, William Harry.

No description available.

Nelson, Thomas Swan.

No description available.

St. Laurent, Charles Manfred

No description available.

Crisp, Marvin Howard

The principles of invariance form the foundation of the study of irradiance fields in the sea. By review of the existing theory, it is shown how these principles may be applied to imbedded layers to derive complete reflectance and transmittance factors for the containing layer. These complete factors in turn yield the desired irradiance fields. They are also used to develop local invariance principles and the associated local transmittance and reflectance factors. Differential equations for refl...

Sterba, John R.

Changes in the global situation resulting from the demise of the Soviet Union have led to major restructuring in United States' military. As a result the Navy and Marine Corps have reevaluated amphibious concepts, resulting in Operational Maneuver From the Sea (OMFTS), and Sea Based Logistics (SBL). OMFTS supposed by SBL rely on a "sea-base" to act as the staging area for the dissemination of supplies to the amphibious units ashore. This close integration of Navy and Marine Corps logistics requi...

McMillan, John Gabriel

No description available.

Lawrence, Ketihy D.

No description available.

Lymberis, Panagiotis

The Hellenic Navy is confronted with a set of mission-related challenges that can not be efficiently supported by existing information systems. However, the transition to more modern information systems needs to fulfill a basic principle of command and control, "unity of purpose". This thesis uses the unifying concept of information architectures to identify some desired characteristics for future HN information systems. Two real-life projects are reviewed to substantiate the analytical suggest ...

Sermarini, Joseph T.

This research investigates the feasibility, benefits, impacts and costs of replacing F-76 with JP-5 and adopting JP-5 as the single "universal fuel at sea". Joint Publication 4-03, Joint Bulk Petroleum Doctrine states, "Department of Defense components should minimize the number of bulk petroleum products that must be stocked and distributed". DoD currently stores and distributes two fuels, F-76 and JP-5, for shipboard use. As the universal fuel at sea JP-5 would replace F-76. All shipboard syst...

Keller, Joe, Ivey, James, Dalakos, Antonios, Okan, Orhan, Kuchler, Ryan, Cooke, Rabon, Stallings, Brad, Searles, Scot, Gokee, Mersin, Lashomb, Pete, Byers, David, Papoulias, Fotis, Ciezki, John, Ng, Ivan

Includes supplemental material. / This report outlines the results of a two quarter Total Ship Systems Engineering (TSSE) Capstone design project undertaken by the students at the Naval Postgraduate School. The project was under the direction of Professors C.N. Calvano and R.Harney. / Currently, no system exists that provides a sea-based distributed aviation platform capability. The emergence of Unmanned Air Vehicles (UAVs) / Unmanned Combat Air Vehicles (UCAVs), the continued U.S. Navy focus o...

Filipovic, Marko

Perfluoroalkyl acids (PFAAs) are man-made chemicals. Their unique properties make them beneficial for a wide range of industrial and consumer applications, such as constituents in fire fighting foams, hydraulic oils and food packaging materials.PFAAs have shown to be highly persistent in the environment, and the toxicological potential of long chain PFAA homologues is of a concern. International regulation and voluntary actions by the industry have been implemented and led to reduced primary emi...

Matthews, John Brian Robin

Ocean uptake of anthropogenic CO2 causes ocean acidification, a secular, global-scale decline in the pH of seawater. In order to better understand the implications of contemporary acidification for marine organisms and ecosystems, there is a need to better characterise natural variability in carbonate chemistry. In this thesis, climatological seasonal variability of sea surface pH and aragonite saturation state (OmegaA) in the open ocean is indirectly derived from other parameters of the marin...

Godlovitch, Daniel

Thickness distributions of sea ice (g(h)) display a ubiquitous exponential decay (’tail’) in ice above approximately 2 meters thick. This work uses idealised models to examine the root causes of the exponential tail of the sea ice thickness distribution. The ice of thickness greater than 2 meters is formed through the fracture and piling of ice caused by interactions between floes, driven by winds and currents. The material properties of sea ice are complex and mathematical descriptions of ...

Lienert, Fabian

The first part of this thesis is an assessment of the ability of global climate models to reproduce observed features of the leading Empirical Orthogonal Function (EOF) mode of North Pacific sea surface temperature (SST) anomalies known as the Pacific Decadal Oscillation (PDO). The simulations from 13 global climate models I am analyzing were performed under phase 3 of the coupled model intercomparison project (CMIP3). In particular, I am investigating whether these climate models capture t...