Radar and sonar probing of rocks
The purpose of this paper is to summarize the research of the past sixteen years on methods of probing into solid rock. For these purposes, there are three completely different systems: radar, sonar, and nonlinear sonar. In dry salt all of the systems work. Five radar systems of different frequencies have been used to probe salt for different purposes and with different resolutions. Distances penetrated were from almost 2000 meters to under one 1 meter. With some moisture in the rock, the low frequency Alpha radar system is best because it operates at the frequency of the minimum in loss tangent for water. Sonar systems are used for even more water in the rock. Ranges of one to 300 meters have been obtained in salt with the lower ranges (to 100m) being obtainable is salt with the most water in it. Using one or more of the probing systems, the authors have detected, and ranged to, salt dome flanks, the top of salt, sandstone, anhydrite and sylvite stringers in salt, fractures in salt and water-filled fractures. We have also detected old boreholes in salt pillars, and measured the range and direction to them.
- Research Organization:
- Texas AandM University, College Station, Texas
- OSTI ID:
- 5010186
- Report Number(s):
- CONF-830317-
- Journal Information:
- Prepr., Soc. Min. Eng. AIME; (United States), Vol. 83-88; Conference: TMS/AIME meeting, Atlanta, GA, USA, 6 Mar 1983
- Country of Publication:
- United States
- Language:
- English
Similar Records
Offshore exploration and platform siting by imaging Sonar
Field test results of a borehole directional radar