Accession Number:

ADA399992

Title:

Geophysical Electromagnetic Sounding Using HAARP

Descriptive Note:

Final rept. 1 Sep 1997-30 Aug 2001

Corporate Author:

ALASKA UNIV FAIRBANKS GEOPHYSICAL INST

Personal Author(s):

• Wescott, Eugene M.
• Sentman, Davis D.

Report Date:

2002-03-01

Pagination or Media Count:

14.0

Abstract:

The electrical resistivity of the ground can be measured by several methods. One, which has proven useful, is the controlled source magnetotelluric method CSAMT. Current over a wide range of frequencies is introduced into the earth through a grounded dipole. Then the resulting electric and magnetic fields are measured at a distance greater than several skin depths. The apparent resistivity is then calculated by p 15f EBexp 2 The apparent resistivity vs. frequency can be converted into true resistivity vs. depth, This grant involved an investigation into the HAARP virtual antenna pattern out to 200 km, and its use as a CSAMT transmitter.

Descriptors:

• *ELECTROMAGNETIC FIELDS
• *GEOPHYSICS
• *ATMOSPHERIC SOUNDING
• ALASKA
• ELECTRICAL RESISTANCE

Subject Categories:

• Atmospheric Physics
• Geology, Geochemistry and Mineralogy
• Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE