Evaluation of Geophysical Methods for Cavity Detection at the WES Cavity Test Facility

Results for each of these studies are given. Surface resistivity surveys were also made, including the following methods: Modified Bristow or Bristow-Bates, Wenner profiling, Schlumberger sounding, and dipole-dipole.

Author:

Publisher:

ISBN: OCLC:227457058

Category:

Page: 136

View: 172

Download →

The study reported herein was undertaken to plan and construct a controlled Cavity Test Facility for use in preliminary evaluation of geophysical methods as cavity location or delineation tools and to evaluate several geophysical techniques to determine whether signatures could be obtained that would help to either locate a cavity or, once located, to determine its size, depth, or shape in plan view. Seismic studies conducted at the Cavity Test Site consisted of surface compression wave refraction surveys, crosshole shear wave surveys, shallow seismic reflection surveys, Meissner wave-front surveys, and a sonar investigation. Results for each of these studies are given. Surface resistivity surveys were also made, including the following methods: Modified Bristow or Bristow-Bates, Wenner profiling, Schlumberger sounding, and dipole-dipole. Subsurface resistivity tests were also accomplished. Radar tests using three different radar systems: a 4.2-GHz continuous wave-frequency modulated (CW-FM) system, a 100-Hz pulse radar system, and a 300-MHz pulse radar system--were also performed at the Cavity Test Facility. Results of the attempt to detect cavities at the WES Cavity Test Facility were mostly negative. It is recommended that an alternate test site be found where conditions are not as extreme, that cavity detection research continue, and that the following geophysical methods be investigated; microgravimetric techniques including gravity-gradient measurements, high-resolution seismic profiling, expanding spread seismic fan shooting, cavity diffraction signatures with crosshole geometry, and continued study of subsurface probing radar to determine the lithology dependence of its applicability.
Posted in:

Related Books

Evaluation of Geophysical Methods for Cavity Detection at the WES Cavity Test Facility
Language: en
Pages: 136
Authors:
Categories:
Type: BOOK - Published: 1980 - Publisher:

The study reported herein was undertaken to plan and construct a controlled Cavity Test Facility for use in preliminary evaluation of geophysical methods as cavity location or delineation tools and to evaluate several geophysical techniques to determine whether signatures could be obtained that would help to either locate a cavity
Handbook of Geophysical Cavity-locating Techniques with Emphasis on Electrical Resistivity
Language: en
Pages: 175
Authors: Keith G. Kirk
Categories: Caves
Type: BOOK - Published: 1981 - Publisher:

This handbook is primarily a description of the methodology of using earth resistivity techniques for locating cavities. Only a small portion of the handbook will be devoted to the theoretical considerations behind these techniques. However, the annotated bibliography cites ample literature to satisfy the needs of the theoretician. Along with
Developments in Geophysical Exploration Methods
Language: en
Pages: 262
Authors: A.A. Fitch
Categories: Science
Type: BOOK - Published: 1983-10-31 - Publisher: Springer Science & Business Media

"The first phase of geophysical exploration is carried out on the subsurface.The subsurface in this phase is inaccessible to direct observation. D.W. Strangway presents an interesting and effective method: audiofrequency magnetotelluric (AMT) sounding. In the second phase where observations can be made, D.J Buchanan writes of fault detection in coal
Cave Investigation
Language: en
Pages: 138
Authors: Savas Karabulut, Mualla Çinku
Categories: Science
Type: BOOK - Published: 2017-07-12 - Publisher: BoD – Books on Demand

Cave investigation is one of the most interesting research field in natural and earth sciences, showing a rapid development with technological progress. It coincides with a number of scientific disciplines to address the early human histrory, habitats of living lives and specimens. This book will be useful to students and
Symposium on Detection of Subsurface Cavities, 12-15 July 1977
Language: en
Pages: 187
Authors: Savas Karabulut, Mualla Çinku
Categories: Caves
Type: BOOK - Published: 1977 - Publisher:

Books about Symposium on Detection of Subsurface Cavities, 12-15 July 1977