DEEP-WELL RESEARCH
Abstract
A deep-hole vertical array of six short-period seismometers was tested at Grapevine, Texas. The results indicated that the array performed satisfactorily. An array of four seismometers was then operated routinely in a deep hole near Apache, Oklahoma, to record noise and signals. A deep-hole triaxial seismometer was constructed and tested. The results of the test program indicated that minor design modifications were required before the instrument would be ready for routine use. A long-period response was obtained from a short-period deep-hole seismometer by the use of filters and amplifiers. The resultant system was capable of operation at a magnification greater than 50,000 at 0.04 Hz and did not appear to be limited by system noise at that magnification. Routine measurements of noise and signals in deep holes were made at sites in Oklahoma, Texas, and West Virginia. The measurements were used in a theoretical study program designed to increase understanding of the nature of noise and signals. Effort was expended to define optimum processing techniques for signals recorded from both triaxial and vertical seismometers. The results of this effort will lead to an optimum on-line processor for routine field use.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 24, 1965
- Accession Number
- AD0625514
Entities
Organizations
- Geotech Instruments (United States)