Call number:
ZSP-201-79/15
In:
CRREL Report, 79-15
Description / Table of Contents:
This report discusses the application of several modern geophysical techniques to groundwater exploration in areas in permafrost. These methods utilize the principles of magnetic induction and radiowave surface impedance in the 10- to 400-kHz band, the techniques of impulse and side-looking radar in the 50- to 10,000-MHz band, and also some optical techniques using imagery obtained from a satellite. Low frequency case studies demonstrate the use of the techniques for detecting free water under an ice cover in shallow, almost completely frozen lake basins, and thaw zones within lake beds, stream channels, and in permafrost in general. The radar studies demonstrate the use of these techniques for determining depth of free water and ice cover thickness on lakes and rivers
Type of Medium:
Series available for loan
Pages:
iv, 30 Seiten
,
Illustrationen
Series Statement:
CRREL Report 79-15
URL:
https://apps.dtic.mil/docs/citations/ADA072157
URL:
https://hdl.handle.net/11681/9012
Language:
English
Note:
CONTENTS
Abstract
Preface
Introduction
Part I. Low frequency resistivity methods
Resistivity of earth materials
Theory and description of techniques
Surface impedance technique
Airborne radiowave technique
Magnetic induction technique
Case studies
Location of thaw zones beneath lakes and rivers
Location of permeable materials in unfrozen ground
Delineating permafrost boundaries
Part II. High frequency dielectric methods
Dielectric properties of earth materials
Theory and description of equIpment
Profiling radar
Imaging radar
Case studies
Radar profile of a river channel
Impulse radar profile of a freshwater lake
SLAR imagery of Arctic lakes
Literature cited
Appendix A: Satellite imagery for subsurface water exploration
Location:
AWI Archive
Branch Library:
AWI Library
