MAGNETOTELLURIC AND AEROMAGNETIC INTERPRETATION AT FAYOUM- CAIRO DISTRICT, NORTHERN WESTERN DESERT, EGYPT

Document Type : Original Article

Authors

1 National Research Institute of Astronomy and Geophysics (NRIAG), Helwan, Cairo, Egypt.

2 National Research Institute of Astronomy and Geophysics (NRIAG), Helwan, Cairo, Egypt

3 Al-Azhar University, Faculty of Engineering, Cairo, Egypt.

Abstract

The Fayoum–Cairo district lies in the south western part of Cairo, which is affected by several earthquakes. According to the Egyptian Network Seismology of National Research Institute of Astronomy and Geophysics (NRIAG), the last one occurred in the 31st July, 2005 (Magnitude = 4.2 in Richter scale). Magnetotelluric (MT) method can offer good opportunity to detect crustal fluids along faults due to their high electrical conductivity anomalies. The targets of these measurements are various. Its always desired to determine the location(s) of active fault(s) to study the connection of the Fayoum–Cairo seismicity and MT resistivity structure. A single MT profile was carried out across the area in order to investigate the deep resistivity structures. Beside RTP aeromagnetic anomaly map was used to delineate the shallow structures.