THE GEOTECHNICAL PARAMETERS FROM CSEM MAPPING AND MONITORING DATA AT THE OAISIS KHARGA AND BARIS OF SAHARA DESERT, EGYPT

Abstract

The site of investigation, oasis Kharga, is located at about
600 km south of Cairo, Egypt; Baris is about 90 km from
Kharga also to south and towards more inside the desert.
The work was aimed to investigate the rock mass stability
at Baris and to estimate the water intake in the Oasis
Kharga. A controlled source electromagnetic (CSEM) approach developed earlier by IGF UB RAS (Geophysical
Federal Institute, Ural Branch of Russian Academy of Science) is applied to image the ranked deformation levels in
the massive structure of the Baris. The wide profile system
of observation has been used to monitor the three components of the alternating magnetic field along predefined
measuring lines in the study area. Here we can show the
first results that we shall continue during some cycles of
monitoring. The second part of our work was linked with
mapping the massif structure inside the oasis City, where
only using our device we could construct the geoelectrical
sections for 5 profiles and show the real structure of the
water volume and its complicated structure up to 200 meters depth recording the values of real not apparent resistivity.