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dc.contributor.advisorJoseph, John E.
dc.contributor.advisorReeder, Davis B.
dc.contributor.authorCollins, Jeffrey D. II
dc.date.accessioned2019-05-15T19:37:35Z
dc.date.available2019-05-15T19:37:35Z
dc.date.issued2019-03
dc.identifier.urihttp://hdl.handle.net/10945/62239
dc.descriptionApproved for public release. distribution is unlimiteden_US
dc.description.abstractDuring Ice Exercise (ICEX) 2018, a 120-kHz echosounder was used to investigate the ocean environment underneath the Arctic ice sheet in the southern Beaufort Sea down to a depth of 200 meters. Returns from the echosounder, coupled with data from an Acoustic Doppler Current Profiler (ADCP) and a Conductivity, Temperature, and Depth (CTD) profiler, suggest the presence of sharp, sound-speed gradients throughout the water column, occurring more often at greater depths. The pattern of returns can be correlated to variations in temperature and salinity common to the development of microstructure, suggesting a mechanism related to the formation of thermohaline staircases at greater depths. The presence of microstructure at shallower depths provides a potential source of detection of submerged objects via their hydrodynamic signature resulting from the disturbance of the microstructure. The current profile from the ADCP, along with the movement of the ice floe, provides evidence of shear at a depth near 20 meters, which allows for water from the lower, warmer mass to penetrate upwards toward the ice, increasing the vertical heat flux and impacting the melting of ice.en_US
dc.description.urihttp://archive.org/details/investigatingthe1094562239
dc.publisherMonterey, CA; Naval Postgraduate Schoolen_US
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.titleINVESTIGATING THE CHARACTERISTICS OF THE SOUTHERN BEAUFORT SEA USING ACOUSTICAL OCEANOGRAPHY SENSORS DURING ICEX-18en_US
dc.typeThesisen_US
dc.contributor.departmentOceanography
dc.subject.authoracoustical oceanographyen_US
dc.subject.authoracoustic scatteringen_US
dc.subject.authorADCPen_US
dc.subject.authorArcticen_US
dc.subject.authorBeaufort Seaen_US
dc.subject.authorechosounderen_US
dc.subject.authorICEXen_US
dc.subject.authormicrostructureen_US
dc.description.recognitionOutstanding Thesisen_US
dc.description.serviceLieutenant, United States Navyen_US
etd.thesisdegree.nameMaster of Science in Physical Oceanographyen_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.disciplinePhysical Oceanographyen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US
dc.identifier.thesisid32029


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