Accession Number:

AD0752601

Title:

Montana Large Aperture Seismic Array

Descriptive Note:

Quarterly technical rept. no. 3, 1 Jun-31 Aug 1972

Corporate Author:

PHILCO-FORD CORP BILLINGS MT COMMUNICATION SYSTEMS DIV

Personal Author(s):

• Matkins, Robert E.

Report Date:

1972-09-15

Pagination or Media Count:

96.0

Abstract:

The report relates to the technical activity associated with the operation, maintenance, and improvement of the Montana Large Aperture Seismic Array LASA during the period 1 June - 31 August 1972. The short-period SP and long-period LP seismograph sensitivity performance statistics are indicated. Performance data on the SP seismometer and LP seismic amplifier are presented. Initiation of an array surficial noise study is discussed. Improvement of the operating efficiency of the PDP-7 computers on-line system program is described. 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.

Descriptors:

• *SEISMOLOGICAL STATIONS
• *UNDERGROUND EXPLOSIONS
• DATA PROCESSING
• DETECTION
• DIGITAL COMPUTERS
• EARTHQUAKES
• MAINTENANCE
• MONTANA
• NOISE
• NUCLEAR EXPLOSIONS
• OPERATION
• SEISMOMETERS
• SENSITIVITY
• STATISTICAL DATA

Subject Categories:

• Seismology
• Seismic Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE