Analysis of 2-axis pencil beam sonar microbathymetric measurements of mine burial at the Martha's Vineyard Coastal Observatory

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dc.contributor.authorGotowka, Brendan Reed.
dc.contributor.corporateCIVINS (Civilian Institutions)
dc.contributor.corporateWoods Hole Oceanographic Institution
dc.date.accessioned2012-03-14T17:32:55Z
dc.date.available2012-03-14T17:32:55Z
dc.date.issued2005-09
dc.descriptionCIVINS (Civilian Institutions) Thesis documenten_US
dc.description.abstractThe changing state of warfare has driven the US Navy's area of operations closer to shore into littoral coastal waters. Mine Warfare has been proven as an extremely effective means of battlespace control in these waters. Mines can be inexpensively mass produced and rapidly deployed over large areas. The most common type of mine in use is the bottom placed mine, an object with simple geometry that sits on the seafloor. These mines often exhibit scour induced burial below the seafloor, making detection through traditional mine hunting methods difficult or impossible, while the mines themselves remain lethal. The Office of Naval Research (ONR) has developed a computer model that predicts the extent of mine burial to aid mine hunting and mine clearing operations. Investigations under ONR's Mine Burial Program are presently being conducted to calibrate and validate this model. This thesis uses data from the deployment of an acoustically instrumented model mine near the Martha's Vineyard Coastal Observatory in part of a larger, 16 total object investigation. A 2-axis pencil beam sonar was deployed concurrently with the mine to obtain microbathymetric measurements of the scour pit development and the progression of mine burial. Data correction techniques to correct for beam pattern induced bathymetry errors and a transformed coordinate system are detailed within. An analysis of scour pit dimensions includes scour depth, area, and volume as well as a look into percent burial by depth as a characteristic measurement important for operational mine hunting. The progression of mine burial is related to the wave climate, unsteady flow hydrodynamic forcing, and bed-load transport. The analysis examines the relative roles of these mechanisms in the scour-infill-bury process.en_US
dc.description.distributionstatementApproved for public release; distribution is unlimited.
dc.description.urihttp://archive.org/details/analysisofaxispe109451736
dc.format.extent98 p. : ill. (some col.) ;en_US
dc.identifier.oclc62300952
dc.identifier.urihttps://hdl.handle.net/10945/1736
dc.language.isoen_US
dc.publisherMonterey California. Naval Postgraduate Schoolen_US
dc.relation.ispartofseriesCIVINS (Civilian Institutions) Theses and Dissertations
dc.rightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.en_US
dc.subject.lcshMines (Military explosives)en_US
dc.subject.lcshSonaren_US
dc.subject.lcshWHOI thesesen_US
dc.titleAnalysis of 2-axis pencil beam sonar microbathymetric measurements of mine burial at the Martha's Vineyard Coastal Observatoryen_US
dc.typeThesisen_US
dspace.entity.typePublication
etd.thesisdegree.disciplineComputer Science and M.S. in Information Technology Managementen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.nameMaster of Sciencesen_US
etd.thesisdegree.nameM.S.en_US
etd.verifiednoen_US
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