Accession Number:

AD0730339

Title:

On Calculating Transient Electromagnetic Fields of a Small Current- Carrying Loop Over a Homogeneous Earth

Descriptive Note:

Corporate Author:

OFFICE OF TELECOMMUNICATIONS BOULDER CO INST FOR TELECOMMUNICATION SCIENCES

Personal Author(s):

Report Date:

1971-07-01

Pagination or Media Count:

13.0

Abstract:

The basic theory of airborne EM surveying, in the time domain, is considered. Rather than resorting to tedious double numerical integration, a more direct approach is adopted. This method, valid in the quasi-static regime, is illustrated for a homogeneous flat earth. The results exhibit a number of clear-cut features that are relevant to remote sensing. For example, a vertical co-axial loop system has a desirable transient response from the standpoint of yielding conductivity data without requiring accurate information on the height of the device above the ground.

Subject Categories:

  • Geology, Geochemistry and Mineralogy

Distribution Statement:

APPROVED FOR PUBLIC RELEASE