Accession Number:

AD0871747

Title:

Montana Large Aperture Seismic Array

Descriptive Note:

Quarterly technical rept. no. 3, 1 Jan-30 Mar 1970

Corporate Author:

PHILCO-FORD CORP BILLINGS MT COMMUNICATION SYSTEMS DIV

Personal Author(s):

Report Date:

1970-04-01

Pagination or Media Count:

41.0

Abstract:

The report concerns the technical activity associated with the operation and maintenance of the Montana Large Aperture Seismic Array LASA for the period January - March, 1970. A planned study of the short-period seismic channel tolerances is presented. A new procedure for characterizing array equipment failures is described along with changes to the EDP maintenance documentation system. Recent calibration data for the ESSA microbarograph array are given. Release of a weather bulletin via phone line interface between the LASA Data Center and the Billings Weather Bureau is described. Description of a long-period seismometer cabling and free-period adjustment improvement modification is included. A short-period sensor field test and RA-5 amplifier rehabilitation program in progress is detailed. The LDC computer and array operation statistics are provided.

Subject Categories:

  • Seismology
  • Seismic Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE