Fisheries aspects of seamounts and Taylor columns

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dc.contributor.advisorGarwood, Roland J., Jr.
dc.contributor.advisorBakun, Andrew
dc.contributor.authorBrainard, Russell E.
dc.contributor.corporateNaval Postgraduate School (U.S.)
dc.contributor.departmentOceanography
dc.dateSeptember 1986
dc.date.accessioned2012-11-27T00:16:46Z
dc.date.available2012-11-27T00:16:46Z
dc.date.issued1986-09
dc.description.abstractThree hypotheses to explain the high biological productivity observed over the southern Emperor-northern Hawaiian Ridge seamounts are suggested: larval retention to hydrodynamic trapping in a Taylor column, nutrient enrichment by topographically-induced upwelling , and attraction of organisms to stationary physical substrates. Quasi-geostrophic wave-topography interactions are considered, with particular regard to Taylor column dynamics. Data from three hydrographic surveys over Southeast Hancock Seamount conducted during summer 1984 and winter 1985 are examined for evidence supporting these hypotheses. The two summer surveys show features consistent with a two-layer systems having bottom-intensified anticyclonic flow around the seamount, in agreement with stratified Taylor column theory. The winter survey indicates more homogeneous anticyclonic flow around the seamount, suggesting the existence of a barotropic Taylor column. Possibly intense internal wave motion and upwelling are suggested by strong, localized vertical southern deflections in across-seamount sections taken during the summer surveys. These deflections are reminiscent of wave-topography interactions is atmosphere flow over terrestrial mountains. The second summer survey showed possible upwelling I the lee of the topographically-forced divergence.en_US
dc.description.distributionstatementApproved for public release; distribution is unlimited.
dc.description.serviceLieutenant, Junior grade, NOAA Corpsen_US
dc.description.urihttp://archive.org/details/fisheriesspectso1094521865
dc.format.extent88 p.en_US
dc.identifier.urihttps://hdl.handle.net/10945/21865
dc.language.isoen_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.subject.authorSeamounten_US
dc.subject.authorSeamount oceanographyen_US
dc.subject.authorFisheriesen_US
dc.subject.authorUpwellingen_US
dc.subject.authorTaylor columnen_US
dc.subject.authorNutrient enrichmenten_US
dc.subject.authorLarval retentionen_US
dc.subject.lcshOceanographyen_US
dc.titleFisheries aspects of seamounts and Taylor columnsen_US
dc.typeThesisen_US
dspace.entity.typePublication
etd.thesisdegree.disciplineOceanographyen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.nameM.S. in Oceanographyen_US
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