The article aims to study the effect of layer thickness and reflection coefficient variation on the image of synthetic seismogram, which is generated by using Ricker Wavelet with wide range of frequencies (20-130Hz) and Vibrator Sweeps with many freq
uencies ranges (5-170Hz) as a known technique in reflection seismic method on land. The Researcher tried to
determine the relationship between signals recording times and reflection coefficients variation from first side, and recording times with layer thickness variation from second side. The result which is observed that; the recorded times increased proportionally with increasing of the layer thickness (as we
know), but it is delayed with exponential relation when the velocity and density are varied within the same layer. New manner is applied to represent the result by using the conversion of time seismic section to raster images by using GIS,
this way gave us ability to control the colored scale which reflects the amplitude of recorded signals, and follows the reflectors or get important information about signals amplitude even though the layer thickness is decreased less than wavelet length ten times if we used Ricker signal or Vibration Sweeps.
This study includes laboratory measurements using different models in
order to determine the effect of wall-phenomenon on the electrical resistivity
measurements, and field applications. This phenomenon had been studied in
the case of homogeneous
medium of which the resistivity is constant, and in the
case of unhomogeneous medium, composed of two or three different layers. It is
found that the effect of this phenomenon is the same although the medium
resistivity is different or with the increase of the number of layers. This
phenomenon changes according to the measurements conditions such as the
measurements direction concerning the edge of slope or wall, the distance
between AB electrodes, and the distance between the configuration and the
wall.
