Electromagnetic properties of dry and water saturated basalt rock, 1-110 GHz

Author

Frasch, Lydell L. ; McLean, Scot J. ; Olsen, Robert G.

Author_Institution

Boeing Co., Seattle, WA, USA

Volume

36

Issue

3

fYear

1998

fDate

5/1/1998 12:00:00 AM

Firstpage

754

Lastpage

766

Abstract

This paper reports on the measured electromagnetic properties of dry and water saturated basalt rock over a frequency range of 1-110 GHz. Tests were conducted in standard waveguides below 12 GHz and with free-space systems above 12 GHz. The basalt used in this investigation was found to be nonmagnetic. Measured relative permittivities for the dry basalt varied from approximately (8.19,-0.71) at 1.12 GHz to (6.80,-0.49) at 110 GHz. The porosity of the basalt was determined to be roughly 10%. Properties of water saturated basalt were also measured at several frequencies and compared to theoretical predictions based on a simple Maxwell-Garnett mixing theory. Finally, the potential of using microwave tomography on basalt rock was examined based on the resulting properties

Keywords

geophysical prospecting; geophysical techniques; permittivity; rocks; terrestrial electricity; 1 to 110 GHz; EHF; Maxwell-Garnett mixing theory; SHF; UHF; basalt; dry; electromagnetic property; exploration; geoelectric method; geophysical prospecting; measurement technique; microwave tomography; permittivity; porosity; rock; terrestrial electricity; water saturated; Electromagnetic measurements; Electromagnetic scattering; Frequency dependence; Frequency measurement; Geologic measurements; Geology; Geophysical measurements; Permittivity measurement; Soil; Water conservation;

fLanguage

English

Journal_Title

Geoscience and Remote Sensing, IEEE Transactions on

Publisher

ieee

ISSN

0196-2892

Type

jour

DOI

10.1109/36.673669

Filename

673669