A seismic Refraction Study of the Influence of Basement Topography on Existing Run-of Channel at Television Village Campus of Kaduna Polytechnic, Kaduna Nigeria

Abstract

A run-off channel or course of a stream behind Kaduna Polytechnic staff Quarters at college of Arts and Business Studies, (CABS) Express Bypass or Television Campus at Television village, Kaduna was surveyed using seismic refraction method. The main aim of the survey was to determine the influence of the basement topography if any, on the run-off channel. The length of the field was 1000m while the width of the fieldwas 500m. Ten channel geophones were vertically and firmly planted from the shot point at 5.0m separations along the profile to pick up the seismic wave that propagated through the ground. From the data collected, travel time curve were drawn. From the travel time curves, layer velocities were deduced. Three layers were encountered in this field of survey. The average depth to basement was found to be about 9.0m. The deepest depth was found to be about 14.0m, while the shallowest depth was about 4.0m. The stream course was superimposed on depth to Basement map. From this it was deduced that the stream course preferred the shallowest depth to the basement.