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dc.contributor.advisorWright, Stephen G. (Stephen Gailord), 1943-
dc.contributor.advisorGilbert, Robert B. (Robert Bruce), 1965-
dc.creatorNodine, Mary Catherine
dc.date.accessioned2017-07-05T20:22:17Z
dc.date.available2017-07-05T20:22:17Z
dc.date.issued2007-08
dc.identifierdoi:10.15781/T2VH5CT3N
dc.identifier.urihttp://hdl.handle.net/2152/47434
dc.description.abstractThis study involves the examination of wave-induced submarine mudslides caused by recent major hurricanes in the Mississippi Delta region of the Gulf of Mexico, including the development of a model that can be used to analyze and predict these mudslides. Reports of mudslides caused by Hurricane Ivan in 2004 and Hurricane Katrina in 2005 were collected and studied to determine locations of mudslide activity. A simple limit equilibrium model was developed to calculate a factor of safety against mudslide occurrence given the soil shear strength, the water depth, the slope angle, and the wave height and period at a site. The limit equilibrium model was verified using a more rigorous deformation model, and parametric analyses were performed to determine the sensitivity of the model to changes in input parameters. Results of the limit equilibrium model generally agreed well with reports of mudslides, though due to the difficulty in obtaining site-specific shear strength data and the variability in shear strength over the area of study, the most successful analyses were those that took variation in soil shear strength into account. The limit equilibrium model was used to formulate conclusions regarding the characteristics of ocean wave-induced mudslides. Mudslides were generally found to be rare events, occurring only in instances of major hurricanes over most of the Mississippi Delta region, but more frequently in water depths less than about 100 feet. The slope angle was found to be a relatively insignificant factor in mudslide vulnerability when compared to other parameters. Analyses suggested that mudslides are small in areal extent - on the order of a few thousand feet in length and width - and that mudslides are unlikely to result in movement of soil over long distances. Risk analyses were performed in order to determine the return periods of mudslides, both on a site-specific scale and on a regional scale.en_US
dc.format.mediumelectronicen_US
dc.language.isoengen_US
dc.relation.ispartofUT Electronic Theses and Dissertationsen_US
dc.rightsCopyright © is held by the author. Presentation of this material on the Libraries' web site by University Libraries, The University of Texas at Austin was made possible under a limited license grant from the author who has retained all copyrights in the works.en_US
dc.subjectSubmarine mudslidesen_US
dc.subjectGulf of Mexicoen_US
dc.subjectHurricanesen_US
dc.titleWave-induced mudslides during recent hurricanes in the Mississippi Delta Region of the Gulf of Mexicoen_US
dc.typeThesisen_US
dc.description.departmentCivil, Architectural, and Environmental Engineeringen_US
dc.type.genreThesisen_US
thesis.degree.departmentCivil, Architectural, and Environmental Engineeringen_US
thesis.degree.disciplineCivil Engineeringen_US
thesis.degree.grantorUniversity of Texas at Austinen_US
thesis.degree.levelMastersen_US
thesis.degree.nameMaster of Scienceen_US
dc.rights.restrictionRestricteden_US


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