Interpretation of Conventional Reciprocal Method (CRM) refraction data for identification of subsoil structure in the tourism area at Batu Kuda Bandung

Abstract

The purpose of this study is to identify the subsurface geological structure by using the seismic refraction method in the Wana area of Batu Kuda tourism using Seismic Data Interpretation Refractive Conventional Reciprocal Method (CRM) which aims to produce a GUI. Data obtained in the form of wave propagation time as time forward and time reverse, from the travel time of the wave and distance and time geophone analysis. From the results of the data interpretation, the velocity of P wave propagation in the medium and depth is obtained in 2 layers. In the first layer obtained a velocity value of 628.98 m / s with the depth of the first layer ranged from 0 m - 8.73 m and the seismic wave velocity in the second layer was 1228.99 m / s with the depth of the second layer ranged from 8.73 m - 20 m. Based on the 2D model the distribution pattern of velocity values, it can be indicated that the first layer is the latosol soil layer containing sand, gravel, fine sediment and clay. The second layer contains fine deposits, sandstone, gravel, sand, fine sand (silt), clay and clay. These materials as a result of the process of the eruption of an undefined young volcano.