Main Title |
Electromagnetic Methods for Mapping and Evaluating Aquifers. |
Author |
Morriso, H. F. ;
|
CORP Author |
California Univ., Berkeley. Water Resources Center. |
Year Published |
1972 |
Report Number |
UCAL-WRC-W-190; OWRR-B-067-CAL; 13182,; B-067-CAL(1) |
Stock Number |
PB-211 646 |
Additional Subjects |
( Aquifers ;
California) ;
( Electromagnetic prospecting ;
Aquifers) ;
Subsurface investigations ;
Ground water ;
Depth sounding ;
Gravel ;
Clays ;
Evaluation ;
Santa Clara Valley
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB-211 646 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
5p |
Abstract |
An electromagnetic depth sounding experiment with a horizontal loop carrying an oscillating current was carried out in Santa Clara Valley, California. The field data are interpreted in terms of the polarization parameters of the magnetic polarization ellipse. The chosen parameters are tilt-angle, ellipticity and the modulus of wave-tilt. The electrical discontinuities deduced are in general agreement with well data and with a geologic section based on resistivity soundings. The results clearly reveal an intermediate, highly resistive layer, which is a permeable stratum for groundwater recharge. It is concluded that a portable electromagnetic sounding system, measuring only tilt-angle and ellipticity, should easily locate highly resistive gravel deposits bounded by conductive clay beds. (Author) |
NTIS Title Notes |
Technical completion rept.. |
PUB Date Free Form |
Jul 72, |
Category Codes |
8H; 8G; 64H |
NTIS Prices |
PC A02/MF A01 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
326531985 |
Origin |
NTIS |
Type |
CAT |