Accession Number : AD0480347

Title :   DEEP-WELL RESEARCH.

Descriptive Note : Quarterly rept. no. 2, 1 Oct-31 Dec 65,

Corporate Author : GEOTECH GARLAND TX

Personal Author(s) : Shappee, Richard M. ; Douze, Edward J. ; Knight, Robert F.

Report Date : 15 JAN 1966

Pagination or Media Count : 16

Abstract : A five-instrument array of vertical seismometers was operated near Franklin, West Virginia, and one triaxial seismometer and one vertical seismometer were operated as an array at the site near Apache, Oklahoma. The test site near Grapevine, Texas, was operated throughout the period. The coordinate transformed output of a triaxial seismograph was compared with the output of conventional seismographs. Minor differences were found. Wiener optimum filters were developed for use with digitally processed data. An example of the degree of noise suppression achieved with one of the contemplated processing techniques is presented. (Author)

Descriptors :   (*SEISMOMETERS, PERFORMANCE(ENGINEERING)), (*SEISMOGRAPHS, MEASUREMENT), (*SEISMOLOGICAL STATIONS, WEST VIRGINIA), VERTICAL INDICATORS, SUPPRESSORS, SHELLS(STRUCTURAL FORMS), NOISE(RADIO), ELECTROMAGNETIC WAVE FILTERS, FREQUENCY, CALIBRATION, SURFACE PROPERTIES, ELECTRONIC RECORDING SYSTEMS, DIGITAL COMPUTERS, EARTH HANDLING EQUIPMENT, CONSTRUCTION, TEST EQUIPMENT, MASS ENERGY RELATION, VIBRATION, VIBRATORS(MECHANICAL), SIGNALS, NETWORKS.

Subject Categories : Seismology

Distribution Statement : APPROVED FOR PUBLIC RELEASE