Accession Number:

AD0757276

Title:

Montana Large Aperture Seismic Array

Descriptive Note:

Quarterly technical rept. no. 4, 1 Sep-30 Nov 1972

Corporate Author:

PHILCO-FORD CORP BILLINGS MT COMMUNICATION SYSTEMS DIV

Personal Author(s):

Report Date:

1972-12-15

Pagination or Media Count:

85.0

Abstract:

The report relates the technical activity associated with the operation, maintenance, and improvement of the Montana Large Aperature Seismic Array LASA during the period 1 September - 30 November 1972. The short-period SP and long-period LP seismograph sensitivity performance statistics are indicated. Performance data on the SP seismometer, the SP high-level sensors, and the LP seismic amplifier are presented. Certain array surficial noise sources are identified. Development of a more comprehensive seismograph calibration technique for measurement of the amplitude and phase characteristics of the SP seismograph over a broad band of frequencies is reported. Progress with the installation of the SP channel CTH gain control modification is reported. Statistics relating to the operation and maintenance of the array and data center equipment and land facilities support are provided.

Subject Categories:

  • Seismology
  • Seismic Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE