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dc.contributor.advisorBourke, R.H.
dc.contributor.advisorBreaker, Lawrence C.
dc.contributor.authorClipson, James M.
dc.dateSeptember 1986
dc.date.accessioned2012-11-27T00:18:41Z
dc.date.available2012-11-27T00:18:41Z
dc.date.issued1986-09
dc.identifier.urihttp://hdl.handle.net/10945/22182
dc.description.abstractTwo cluster analysis techniques, one heuristic and one iterative, are employed to investigate the special coherence of the water masses of the East Greenland Current (EGC), in the vicinity of the East Greenland Polar Front (EGPF). Both techniques are shown to be generally reliable, although the iterative technique is more consistent with classical oceanographic analysis. The techniques are applied to data to explore the multiple and single variable data. The cluster technique is shown to have applications in planning a sonobuoy pattern and in assessing the validity of XBT data prior to an acoustic forecast. Acoustical analysis shows that acoustic reciprocity does not hold for propagation in the waters of the EGC. Ranges from shallow to deep water are far in excess of those from deep or shallow water. Propagation across the EGPF is significantly different for normal and oblique cases. Propagation loss fo oblique ranges is between 60 to 80% of perpendicular ranges, mostly due to different source sound speed profiles. Three acoustic models, FACT, RAYMODE and PE are compared and contrasted. PE is found to be the most consistent and reliable, although both FACT and RAYMODE compare satisfactorily for propagation from shallow to deep water. However, for the reverse case, FACT overestimates ranges by a factor of two, whereas RAYMODE is exceedingly over optimistic in its forecast ranges.en_US
dc.description.urihttp://archive.org/details/watermassndcoust1094522182
dc.format.extent96 p.en_US
dc.language.isoen_US
dc.rightsCopyright is reserved by the copyright owneren_US
dc.subject.lcshOceanographyen_US
dc.titleWater mass and acoustic analysis of the East Greenland Currenten_US
dc.typeThesisen_US
dc.contributor.corporateNaval Postgraduate School (U.S.)
dc.contributor.departmentOceanography
dc.subject.authorCluster analysisen_US
dc.subject.authorEntity attributeen_US
dc.subject.authorSeparation distanceen_US
dc.subject.authorAcoustic analysisen_US
dc.subject.authorPropagation lossen_US
dc.subject.authorDuctingen_US
dc.subject.authorRay tracingen_US
dc.description.recognitionNAen_US
dc.description.serviceLieutenant-Commander, Royal Navy (UK)en_US
etd.thesisdegree.nameM.S. in Oceanographyen_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.disciplineOceanographyen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US
dc.description.distributionstatementApproved for public release; distribution is unlimited.


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