SOIL CONDUCTIVITY MEASUREMENTS
Abstract
Geophysical methods were used to determine the electrical conductivity of alluvium in the French man Lake area, N =A Test Site, in connection with Shot Small Boy. Periodic measurements made at two locations indicated that the effects of weather on the electrical conductivity of near surface alluvium were quite small during several months prior to Shot Small Boy. Natural lateral variations in electrical conductivity of shallow alluvium were mapped by making numerous measure ments along buried cable lines. Artificial changes in electrical conductivity brought about by backfilling instrumented trenches were investigated by making measurements across the trenches. The thickness and electrical conductivity of natural alluvial layers were determined at a limited number of locations by interpreting vertical resistivity profiles to depths of several hundred feet. Postshot measurements were made to determine the effects of the shot on electrical conductivity of near-surface alluvium. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 31, 1963
- Accession Number
- AD0338966
Entities
People
- J.h. Scott
- R.a. Black