Transient Controlled‐Source Electromagnetic Induction in a Uniaxial Half‐Space

2001 ◽  
Author(s):  
Mansour A. Al‐Garni ◽  
Mark E. Everett
Keyword(s):  
Half Space ◽  
Electromagnetic Induction ◽  
Controlled Source

On: “Results of a controlled‐source audiofrequency magnetotelluric survey at the Puhimau thermal area, Kilauea Volcano, Hawaii” by L. C. Bartel and R. D. Jacobson (GEOPHYSICS, 52, 665–677, May 1987).

Geophysics ◽  
1988 ◽  
Vol 53 (5) ◽  
pp. 724-725 ◽  
Author(s):  
Hans‐Martin Maurer
Keyword(s):  
Plane Wave ◽  
Half Space ◽  
Apparent Resistivity ◽  
Near Field ◽  
Electrical Dipole ◽  
Controlled Source ◽  
Space Curves ◽  
Wave Approximation ◽  
The Given ◽  
Plane Wave Approximation

Bartel and Jacobson try to correct apparent resistivity values from CSAMT measurements, where the plane‐wave approximation is not valid. They want to convert CSAMT curves to passive MT curves (Cagniard curves), which can be interpreted by 2-D modeling. The measured CSAMT [Formula: see text] value is projected onto the [Formula: see text] axis in parallel with the half‐space curves of a horizontal electrical dipole in the given distance between receiver and transmitter. The example looks convincing, and it may be supposed to be a simple near‐field correction.

Sign in / Sign up

Export Citation Format

Share Document