Accession Number:

ADA063600

Title:

Attenuation of EMP in the Wave Zone Due to Imperfectly Conducting Ground.

Descriptive Note:

Topical rept. Jan-Jun 78,

Corporate Author:

MISSION RESEARCH CORP SANTA BARBARA CALIF

Personal Author(s):

• Longmire,Conrad L.

Report Date:

1978-06-01

Pagination or Media Count:

34.0

Abstract:

Previously, EMP fields from nuclear surface bursts have been extrapolated to points far beyond the source region by use of a multipole extrapolation based on perfect ground conductivity. This report presents a method for correcting the extrapolated fields to account for actual ground impedance. The method is shown to compare favorably with Sommerfelds solution for a dipole radiating over a flat earth. Author

Descriptors:

• *ELECTROMAGNETIC WAVE PROPAGATION
• *ELECTROMAGNETIC PULSES
• COMPUTERIZED SIMULATION
• NUCLEAR EXPLOSIONS
• ELECTROMAGNETIC FIELDS
• CONDUCTIVITY
• SURFACE BURST
• ELECTRICAL CONDUCTIVITY
• ROCK
• EXPLOSION EFFECTS
• SOILS
• LONG RANGE(DISTANCE)
• ATTENUATION
• EARTH MODELS
• IMPEDANCE
• EXTRAPOLATION

Subject Categories:

• Geology, Geochemistry and Mineralogy
• Nuclear Weapons

Distribution Statement:

APPROVED FOR PUBLIC RELEASE