Sub Bottom Profile
A subsurface mapping system is used to obtain information about the sediments beneath the surface of the coastal bottom. High resolution mapping of seabed morphology is now essential for geophysical investigations, especially since the emphasis in recent years has shifted from broad reconnaissance exploration to intensive studies of local areas. This technique can detect depths of subsurface layers and high bearing capacity by integration between the drilling works on two banks and using marine geophysical methods along line between two banks at the River section for plotting geotechnical section model of the investigated in the area. StrataBox instrument is a sub bottom profiling system of sedimentary layers, where the transducer has been mounted on the side of the vessel at 0.3 m below water surface. 10 Mhz of frequency has been chosen to investigate. It is based on the reflected pulse waves from the beds of the River or sea. These reflected waves have been recorded as seismic section, The SBP uses acoustic waves that are sent into the sub-bottom by means of a transducer. The acoustic signal reflects upon material transition in the ground that is registered by a receiver. These profiles are dragged along with a boot on which positioning equipment is present. By carrying out a sequence of measurements along a measuring line, detailed information concerning the composition of the sub bottom and the internally present disturbances can be obtained.