ANALYSIS OF TFSO LONG-PERIOD NOISE SURVEY DATA

reportActive / Technical Report | Accession Number: AD0822367 | Open PDF

Abstract:

The installation and checkout of a medium aperture long-period array at Tonto Forest Seismological Observatory is described. Methods of data selection and preparation for processing are given. Power spectra and phase velocities of the noise are computed comparison with previously reported results show basic agreement. Coherence functions show peaks at the same frequencies in which the noise power is concentrated. In the frequency band 0.04 to 0.082 cps, the peak coherence is greater than 0.8 for station separations less than 10 kilometers. The coherence tends to decrease with increasing distance between stations.

Author(s):
Kelley, Dale S.
Author Organization(s):
GEOTECH GARLAND TX
Descriptive Note:
Technical rept.
Pagination:
0064

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release, Document Partially Illegible
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited. Document Partially Illegible.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
TR-67-54
Contract/Grant Number(s):
AF 33(657)-67-C-0091, ARPA ORDER-624
Project Number(s):
VT/7702
Monitor Series:
DARPA
 Subject Terms
Joint Capability Areas:
JCA_6.3.3_Spectrum Management; JCA_6.3_Net Management; JCA_6_Net Centric; JCA_8_Building Partnerships; JCA_5_Command and Control; JCA_5.3_Planning; JCA_3_Force Application; JCA_8.2_Shape; JCA_3.2_Engagement; JCA_1.2.5_Lessons Learned; JCA_3.2.1_Kinetic Means; JCA_8.1_Communicate
Communities of Interest:
Energy and Power Technologies
Descriptor(s):
*SEISMOLOGICAL STATIONS, APPROXIMATION(MATHEMATICS), ARIZONA, COHERENT SCATTERING, DETECTION, EXTREMELY LOW FREQUENCY, FREQUENCY, GEOLOGY, NETWORKS, NUCLEAR EXPLOSIONS, PHASED ARRAYS, POWER SPECTRA, RANGE(DISTANCE), REDUCTION, SEISMIC WAVES, SEISMOMETERS, SIGNAL TO NOISE RATIO, UNDERGROUND EXPLOSIONS, UNDERGROUND STRUCTURES, VELOCITY
Field(s)/Group(s):
Seismology
Keyword(s):
SEISMIC ARRAYS, SEISMOGRAMS, TFSO(TONTO FOREST SEISMOLOGICAL OBSERVATORY), VELA UNIFORM
Report Date:
1967 Sep 18