Date of Award
9-17-1983
Document Type
Thesis
Abstract
Geomagnetic 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.
Recommended Citation
Messick, Steven L., "A digital data collection system for geomagnetic pulsation studies" (1983). Theses (Unassigned). 54.
https://ualaska.researchcommons.org/uaf_unassigned_theses/54
Handle
http://hdl.handle.net/11122/7424