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dc.contributor.advisorHeinz, O.
dc.contributor.authorAmes, Morgan P.
dc.contributor.authorVehslage, Louis McBane
dc.date.accessioned2012-11-20T00:16:50Z
dc.date.available2012-11-20T00:16:50Z
dc.date.issued1981-12
dc.identifier.urihttp://hdl.handle.net/10945/20589
dc.description.abstractTwo coil antennas consisting of 5460 turns of copper wire were utilized to measure the vertical component and a horizontal component of the fluctuations of the geomagnetic field on the floor of Monterey Bay at a depth of approximately seventy meters. The results indicate that the power spectral density of the fluctuations varies from 1.6 x 10 nT /Hz at 0.01 Hz to 8 x lO" 8 nT2 /Hz at 20 Hz for the horizontal component and from 3.2 x 10 2 nT2 /Hz at 0.01 Hz to 6.3 x 10' s nT2 /Hz at 20 Hz for the vertical. Both components exhibit a monotonic decrease of about 20 dB/decade as the frequency increases, except in the 8-20 Hz region in which the Schumann resonances occur. Measurements of the power spectral density for the vertical component show relatively small excursions from average measurements as a function of wave action, while the horizontal power spectral density varies greatly throughout the day and as a function of seawater motions.en_US
dc.description.urihttp://archive.org/details/lowfrequencygeom1094520589
dc.language.isoen_US
dc.publisherMonterey, California. Naval Postgraduate Schoolen_US
dc.subject.lcshPhysicsen_US
dc.titleLow frequency geomagnetic fluctuations (0.025 to 20 Hz) on the floor of Monterey Bayen_US
dc.typeThesisen_US
dc.contributor.corporateNaval Postgraduate School
dc.contributor.schoolNaval Postgraduate School
dc.contributor.departmentPhysics and Chemistry
dc.subject.authorLow Frequency Geomagnetic Measurementsen_US
dc.subject.authorGeomagnetic Fluctuations in an Ocean Environmenten_US
dc.description.serviceLieutenant, United States Navyen_US
etd.thesisdegree.nameM.S. in Engineering Scienceen_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.disciplineEngineering Scienceen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US
dc.description.distributionstatementApproved for public release; distribution is unlimited.


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