MAGNETOTELLURIC EVIDENCE FOR THE LOW VELOCITY LAYER,
Abstract
The most complete soundings indicate a sharp decrease in electrical resistivity from about 10,000 ohm meters to about 50 ohm meters at a depth of the order of 70-80 km in the Earth. The soundings suggest that the resistivity increases again shortly thereafter to 1000 ohm meters and then finally decreases to 1 ohm meter at a depth which seems to vary from 300 to 1000 km. Using four and five layer models of the Crust and Mantle, families of theoretical magnetotelluric sounding curves are computed. From these families of theoretical curves, two curves which seem to be most representative of the average characteristics of the observed curves are found. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 07, 1963
- Accession Number
- AD0428266
Entities
People
- H. F. Morrison
- H. G. Fournier
- S. H. Ward
Organizations
- University of California, Berkeley