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  • About
  • 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.
41

A study of Barnegat inlet, New Jersey and related shoreline phenomena ...

Lucke, John B. January 1900 (has links)
Thesis (Ph. D.)--Princeton University, 1933. / "Reprinted from Shore and beach, journal of the American shore and beach preservation association, vol. II, no. 2., April, 1934." Bibliography: p. 54.
42

Impact of natural and artificial ebb channel position realignment on oceanfront shoreline change

Rose, John W. January 2009 (has links)
Thesis (M.S.)--University of North Carolina Wilmington, 2009. / Title from PDF title page (February 23, 2010) Includes bibliographical references (109-111)
43

Hierarchical spatial structure and levels of resolution of intertidal grazing and their consequences on predictability and stability at small scales /

Diaz Diaz, Eliecer Rodrigo. January 2008 (has links)
Thesis (Ph.D. (Zoology & Entomology)) - Rhodes University, 2009.
44

The sedimentology, morphology and evolution of Two Gravel Barachois, Placentia Bay, Newfoundland /

Boger, Rebecca A., January 1997 (has links)
Thesis (M. Sc.)--Memorial University of Newfoundland, 1997. / Blbliography: leaves 278-293.
45

The influence of inlet modifications, geologic framework, and storms on the recent evolution of Masonboro Island, NC /

Doughty, S. David. January 2006 (has links) (PDF)
Thesis (M.S.)--University of North Carolina at Wilmington, 2006. / Includes bibliographical references (leaves: 95-98)
46

Predicting the longshore-variable coastal response to hurricanes /

Stockdon, Hilary F. January 1900 (has links)
Thesis (Ph. D.)--Oregon State University, 2006. / Printout. Includes bibliographical references (leaves 111-117). Also available on the World Wide Web.
47

Longshore sediment transport on a mixed sand and gravel lakeshore : a thesis submitted in fulfilment of the requirements for the degree of Doctor of Philosophy in Geograpghy in the University of Canterbury, Christchurch, New Zealand /

Dawe, Iain Nicholas. January 2006 (has links)
Thesis (Ph. D.)--University of Canterbury, 2006. / Typescript (photocopy). Includes bibliographical references (p. 343-364). Also available via the World Wide Web.
48

Drift modelling of marine mammal carcases in coastal waters

Bedington, Michael January 2015 (has links)
A floating object's drift is governed by its buoyancy, shape, and the wind, waves and currents it experiences. Here, I develop a drift modelling framework for marine mammal carcases in coastal waters. The resulting models were run forwards and backwards in time to provide insights into strategies for environmental monitoring under two scenarios. The first explored the beach search options for carcases resulting from potentially fatal collisions between tidal-stream turbines and marine mammals. The second applied the reverse problem for known-location mass strandings to highlight potential at-sea mortality sites. The drift properties of carcase-like objects were assessed in at-sea experiments. Wave transport was found to be greater than Stokes drift alone and in a complex coastal area could not be represented by a downwind multiplier as many previous models have assumed. A high resolution unstructured grid wave model was set up to complement existing wind and current models for the West Coast of Scotland, and these components were combined to build a carcase drift model. In the forward case, from tidal turbine locations, the drift model showed a wide spread of potential stranding sites, suggesting monitoring a limited number of beaches is unlikely to be fruitful. However, selecting beaches in response to immediate wind direction would improve efficiency. Stranding locations alone can only provide evidence of turbine interactions if the number of animals affected is large. In the reverse case, when applied to a mass stranding in Chile, the drift model showed the ability to exclude areas of origin, even though it could not pinpoint an exact mortality site. This work advances understanding of wave transport of surface floating objects, of carcase drift modelling, and of the feasibility of strandings monitoring. The decomposition rate of carcases is a source of uncertainty in the model where further work should be undertaken.
49

Correlações e interações de longo alcance em meios desordenados: linhas costeiras e transição de Anderson / Correlations and long-range interactions in disordered media: shorelines and Anderson transition

Morais, Pablo Abreu de January 2012 (has links)
MORAIS, Pablo Abreu de. Correlações e interações de longo alcance em meios desordenados: linhas costeiras e transição de Anderson. 2012. 117 f. Tese (Doutorado em Física) - Programa de Pós-Graduação em Física, Departamento de Física, Centro de Ciências, Universidade Federal do Ceará, Fortaleza, 2012. / Submitted by Edvander Pires (edvanderpires@gmail.com) on 2015-10-22T18:47:42Z No. of bitstreams: 1 2012_tese_pamorais.pdf: 35280964 bytes, checksum: 5f9fe894e56c156657d642fac9435302 (MD5) / Approved for entry into archive by Edvander Pires(edvanderpires@gmail.com) on 2015-10-22T21:32:50Z (GMT) No. of bitstreams: 1 2012_tese_pamorais.pdf: 35280964 bytes, checksum: 5f9fe894e56c156657d642fac9435302 (MD5) / Made available in DSpace on 2015-10-22T21:32:50Z (GMT). No. of bitstreams: 1 2012_tese_pamorais.pdf: 35280964 bytes, checksum: 5f9fe894e56c156657d642fac9435302 (MD5) Previous issue date: 2012 / Many physical phenomena have strong dependence on the disorder of the medium in which they occur. The {it Anderson} theory localization, for example, states that the introduction of disorder in electronic systems can promote the metal-insulator transition, also known as {it Anderson} transition. However, for low dimensional systems, according to the same theory, any finite degree of uncorrelated disorder is able to promote the exponential localization of all electronic functions. The general {it Anderson} theory localization is violated when long-range correlations and long-range interactions are used. In this scenario, the metal-insulator transition also occurs for low dimensional systems. In network problems, the long-range connections are responsible for the short average distance between individuals belonging to the same social network. This phenomenon is popularly known as six degrees of separation. Furthermore, {it Kleinberg} showed that the introduction of a power-law distribution of long-range links in a network produces a minimum in the transmission time information from a source site to a target site network . In this thesis, we investigate how the long-range disorder changes the universality class of two mathematical models that represent the following physical problems: the erosion process in correlated landscapes and the delocalization-localization transition of the normal modes of a harmonic chain with long range connections restricted by a cost function. In the first model, we show that long-range spatial correlations in the geological properties of the coast, in the critical regime of our model, generates a spectrum of fractals shorelines whose fractal dimensions vary between {it D} = 1.33 and 1.00 when we vary the {it Hurst} exponent in the range $0< H <1$. Furthermore, when we use uncorrelated surfaces, the shoreline, for very intense sea erosion, are self-affine and belong to the same universality class of the interfaces described by the equation of {it Kardar-Parisi-Zhang} ({it KPZ}). In the second model, we show that long-range links in a chain harmonic inserted with a probability with decreasing size of the bond, $p sim r^{-alpha}$, restricted by a cost function proportional to chain length, promotes a delocalization-localization transition of the normal modes for the exponent $ alpha simeq 1.25$. / Muitos fenômenos físicos têm forte dependência da desordem do meio no qual ocorrem. A teoria de localização de Anderson, por exemplo, estabelece que a introdução de desordem em sistemas eletrônicos pode promover a transição metal-isolante, também conhecida como transição de Anderson. Contudo, para sistemas de baixa dimensionalidade, segundo essa mesma teoria, qualquer grau finito de desordem pode promover a localização exponencial de todas as funções eletrônicas. No entanto, foi mostrado que a teoria geral de localização de Anderson é violada quando correlações e interações de longo alcance são utilizadas. Nesse cenário, a transição metal-isolante ocorre também para sistemas de baixa dimensionalidade. Nos problemas relacionados com redes, as ligações de longo alcance são responsáveis pela pequena distância média entre indivíduos pertencentes à mesma rede social. Esse fenômeno é popularmente conhecido como os seis graus de separação. Além disso, Kleinberg mostrou que a introdução de uma distribuição em lei de potência de ligações de longo alcance em uma rede substrato gera um mínimo no tempo de envio de uma informação de um sítio fonte a um sítio alvo da rede. Nesta tese, investigamos como a desordem de longo alcance altera a classe de universalidade de dois modelos matemáticos que representam os seguintes problemas físicos: o processo de erosão na costa de paisagens correlacionadas e a transição deslocalização-localização dos modos normais de vibração de uma cadeia harmônica com ligações de longo alcance restritas por uma função custo. No primeiro modelo, mostramos que correlações espaciais de longo alcance nas propriedades geológicas da costa, no regime crítico do nosso modelo, gera um espectro de linhas costeiras fractais cujas dimensões fractais variam entre D=1.33 e 1.00 quando variamos o expoente de Hurst no intervalo 0.
50

Solution Pits

Bell, John Robert 04 1900 (has links)
Littoral solution pits were studied along 4 shorelines in the Guelph and Amabel Formations of the Bruce Peninsula. Pit depths, diameters, and densities were measured at several elevations above and below water, and various distances from the shoreline. Differences in pit characteristics were related to differences in shoreline energies, lithologies, and fluctuating lake levels in the post glacial period. Pit depths above water are shallower than pit depths below water. This conclusion supports previous hypotheses proposed by Cowell (1976) and Ford (in Goodchild, 1984) that the depth of solution pits increase with increasing water depth. The conclusions also indicate that pits are initiated above water, and that solutional deepening of pits can occur underwater. / Thesis / Bachelor of Science (BSc)

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