Accession Number:

AD0759531

Title:

Montana Large Aperture Seismic Array

Descriptive Note:

Quarterly technical rept. no. 5, 1 Dec 1972-28 Feb 1973

Corporate Author:

PHILCO-FORD CORP BILLINGS MT COMMUNICATION SYSTEMS DIV

Personal Author(s):

• Matkins, Robert E.

Report Date:

1973-03-15

Pagination or Media Count:

75.0

Abstract:

The technical activity associated with the operation, maintenance, and improvement of the Montana Large Aperture Seismic Array LASA during the period 1 December 72 - 28 February 73 is related in this report. The short- period SP and long-period LP seismograph sensitivity performance statistics are indicated. The measured free period and mass position characteristics for the LP seismometer array are presented. Development of pseudo-random binary sequence PRBS calibration technique for the remote measurement of the amplitude, phase, and sensitivity characteristics of the LP seismograph over a broad band of frequencies is reported. Improvement to the PRBS calibrations recently developed for the SP seismograph is described. 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
• CALIBRATION
• DATA PROCESSING
• DETECTION
• EARTHQUAKES
• MONTANA
• NETWORKS
• NUCLEAR EXPLOSIONS
• OPERATION
• PERFORMANCE(ENGINEERING)
• SEISMOMETERS
• SENSITIVITY
• STATISTICAL ANALYSIS

Subject Categories:

• Seismology
• Seismic Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE