الفهرس 
AcknowledgementOnly 14 pages are availabe for public view
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Abstract
In the traditional technique of the Magnetotelluric (MT) method at a station, two components of the electric field (Ex and Ey) and the three components of the magnetic field (Hx, Hy and Hz) are measured simultaneous as five-time series. Regional and semi regional magnetotelluric (MT) surveys require the implementation and deployment of series of MT instruments in order to complete the measurements in an efficient time limit. The main efforts and costs of a magnetotelluric survey are usually devoted to magnetic recordings. Based on this fact, it is proposed to conduct magnetotelluric surveys with a procedure of measuring only telluric at survey points while magnetic variations are simultaneously recorded at a certain single station and/or at magnetic observatories. This would lead to substantial reduction in efforts and costs of regional surveys for deep MT investigations. However, it is expected that such methodology has its disadvantages as a result of the distance between points of telluric recordings and the source of magnetic data. The aim of this study is to use the permanent magnetic observatory as a remote magnetic source in the magnetotelluric survey. The acquisition of the data was divided into two categories, the first one was short-term measurements about 40 hours of recording at each station. The data was acquired at 8 sites along Cairo-Fayoum road starting from the south at the Missallat permeant magnetic observatory at Fayoum city and ending at the north at the 6th of October city. The second category is long-term measurements with minimum 20 days of recordings at each station. The data was acquired at 5 stations Kattamya, Beni suif andMenia stations were correlated with Missallat observatory at Fayoum city and two stations at Aswan area were correlated with Abu simble observatory at Abu simble city.