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dc.contributor.authorMessick, Steven L.
dc.date.accessioned2017-05-02T01:19:35Z
dc.date.available2017-05-02T01:19:35Z
dc.date.issued1983-09
dc.identifier.urihttp://hdl.handle.net/11122/7424
dc.descriptionThesis (M.S.) University of Alaska Fairbanks, 1983en_US
dc.description.abstractGeomagnetic pulsations are minute variations in the ultra-low frequency spectrum of the earth's magnetic field. In order to develop models to explain these phenomena we have first to record data of pulsation events. A flexible, microprocessor controlled data acquisition device suitable for operation at remote sites has been developed. This instrument demonstrates the feasibility of integrating a microprocessor controller with traditional geophysical sensors to create a conceptually simple, yet powerful, data recording device. Much information can be extracted from the data thus recorded. Geomagnetic pulsations are subdivided into several frequency bands; a digital computer routine has been developed which determines the signal power present in each band as a function of time. Pulsations signals tend to be elliptically polarized; another routine has been developed to calculate several polarization parameters, such as ellipticity and handedness, from these data.en_US
dc.language.isoen_USen_US
dc.titleA digital data collection system for geomagnetic pulsation studiesen_US
dc.typeThesisen_US
refterms.dateFOA2020-01-25T02:10:20Z


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