Shear-Wave Seismic Reflection Exploration for Cavities and Tunnels. Volume 1. Study and Design of Techniques

reportActive / Technical Report | Accession Number: ADA260671 | Open PDF

Abstract:

A borehole-coupled asymmetrical force transducer operating on the electrical arc discharge principle is recommended as the source device and three-component borehole-coupled seismic detectors are recommended for complete SH-wave data acquisition. This seismic exploration system, designed to operate in the frequency range of 400-1,600 Hz together with specialized data processing techniques capable of preserving the high-frequency timing accuracies in the seismic signals and enhancing reflections from localized cavity targets, is recommended for future prototype development and field evaluation.

Author(s):
Owen, Thomas E. ; Parra, Jorge O. ; Baird, James C.
Author Organization(s):
SOUTHWEST RESEARCH INST SAN ANTONIO TX
Descriptive Note:
Final technical rept.
Supplementary Note:
See also Volume 2, AD-A260 672. DOI: 10.21236/ADA260671
Pagination:
0142

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
Contract/Grant Number(s):
DACA39-86-K-0017
Monitor Series:
BRDEC
 Subject Terms
Joint Capability Areas:
JCA_5_Command and Control; JCA_5.3_Planning; JCA_6.1.1_Wired Transmission; JCA_6.1.3_Switching and Routing; JCA_6_Net Centric; JCA_6.1_Information Transport; JCA_6.3.3_Spectrum Management; JCA_1_Force Support; JCA_1.4.2_Health Service Delivery; JCA_1.4_Force Support; JCA_3.2_Engagement; JCA_3_Force Application; JCA_6.3_Net Management; JCA_8.2_Shape; JCA_8_Building Partnerships; JCA_1.2_Force Preparation; JCA_3.2.1_Kinetic Means; JCA_1.2.5_Lessons Learned; JCA_4.6_Engineering; JCA_8.2.5_Strengthen Global Defense Posture; JCA_1.3_Human Capital Management
Modernization Areas:
Fully Networked C3
Communities of Interest:
Air Platforms
Descriptor(s):
*SEISMIC DETECTION, *TUNNELS, *SEISMIC REFLECTION, *SEISMIC WAVES, FREQUENCY, CAVITIES, TRAVELING WAVES, SEISMOGRAPHS, TRANSDUCERS, SHEAR STRESSES, BOREHOLES, ROCK, SCATTERING
Field(s)/Group(s):
Civil Engineering, Seismic Detection and Detectors
Keyword(s):
*SHEAR WAVES, LPN SWRI 14 1421, LOSSY SOILS, LOSSY MEDIA, BEDROCK
Report Date:
1987 Sep 01