Accession Number:

AD0753420

Title:

Extended Array Evaluation Program. Special Report No. 8. Preliminary Network Evaluation Studies

Descriptive Note:

Corporate Author:

TEXAS INSTRUMENTS INC DALLAS SERVICES GROUP

Personal Author(s):

• Alsup, Stephen A.

Report Date:

1972-04-30

Pagination or Media Count:

51.0

Abstract:

Theoretical single-station and network signal detection capability models for surface waves are given in this report. Application of these models to world-wide signal detection capability by the Very Long Period Experiment stations and the ALPA, NORSAR, LASA arrays show high probability of at least 2- station detection at about Ms 3.0 - 3.1 for most of Eurasia for both 20 and 40-second Rayleigh waves. More rapid attenuation of the 40 second wave amplitudes with distance compared to 20 second amplitudes is demonstrated and included in the theoretical capability model. Evaluation of a network of such stations to decrease problems in detection, unmixing of signals, and evaluating source radiation pattern effects is discussed.

Descriptors:

• *UNDERGROUND EXPLOSIONS
• *SEISMOLOGICAL STATIONS
• MATHEMATICAL MODELS
• NUCLEAR EXPLOSIONS
• DETECTION
• POWER SPECTRA
• NEW JERSEY
• SEISMOMETERS
• RAYLEIGH WAVES
• EARTHQUAKES
• NETWORKS
• PROBABILITY
• SIGNAL TO NOISE RATIO

Subject Categories:

• Seismology
• Seismic Detection and Detectors

Distribution Statement:

APPROVED FOR PUBLIC RELEASE