SIMULTANEOUS MEASUREMENTS AND SPECTRAL ANALYSIS OF MICROPULSATION ACTIVITY.
Abstract
Earth current micropulsations were recorded simultaneously at Trinidad, Puerto Rico and Austin, Texas during the Fall of 1962. Signals were continuously recorded on paper chart in the frequency band .01 to 1.5 cps. The power spectra of the reduced data exhibit large peaks in the .01 to .07 region, normally considered the region of PC type activity. In this frequency region power spectra of data obtained simultaneously at the three locations are virtually identical, no variations with latitude or longitude are observed. Coherencies above .7 were consistently found between signals in the PC frequency region recorded more than 2,000 miles apart. The investigation of the directional properties of the resultant electric field vector illustrate the strong dependence of this vector on local geology. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1965
- Accession Number
- AD0615054
Entities
People
- A. S. Orange
- F. X. Bostick
- R. L. Komack
- T. Cantwell
Organizations
- Air Force Cambridge Research Laboratories