Accession Number:

AD0813365

Title:

P-WAVE SIGNAL EXTRACTION USING 3-COMPONENT SUBSYSTEM AT TFO

Descriptive Note:

Array research special rept.

Corporate Author:

TEXAS INSTRUMENTS INC DALLAS SCIENCE SERVICE DIV

Personal Author(s):

• Johnson, William
• Bonner, James

Report Date:

1967-01-26

Pagination or Media Count:

69.0

Abstract:

Results of an initial analysis of long-period and short-period data collected at the Tonto Forest Seismological Observatory TFO are presented in this report. The objective of this work is experimental evaluation of the 3- component systems capability to reject noise by exploiting the relationship between horizontal and vertical components of the seismic noise field. Short- period data analyzed included three 8-min recordings consisting of two teleseismic signals and one noise sample, while long-period data included one 40-min teleseismic signal encompassing the P through L interval and one 40-min noise sample. The long-period data was taken from the 200-km dia extended array with 50-km minimum element spacing, while the short-period data was taken from the 10-km TFO cross-array. Long-period P- and S-waves appeared extremely reproducible across the array, indicating minimal vertical crustal filtering variations.

Descriptors:

• *SEISMIC WAVES
• ARIZONA
• BACKGROUND
• CORRELATION TECHNIQUES
• DETECTION
• EARTHQUAKES
• ELECTROMAGNETIC WAVE FILTERS
• NETWORKS
• NOISE
• NUCLEAR EXPLOSIONS
• PROPAGATION
• SEISMOLOGICAL STATIONS
• UNDERGROUND EXPLOSIONS

Subject Categories:

• Seismology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE