Methodology and case history of hybrid seismic surveying in combination with Multichannel Analysis of Surface Waves (MASW): A useful tool for the detection of rock and soil instability zones

摘要

The acquisition of high resolution seismic reflection, seismic refraction tomography and MASW data can be carried out simultaneously by using modern recording equipment featuring 150-250 data channels. The implementation of a specially adapted roll-along recording technique not only reduces the field time for the seismic crew, but it also ensures a regular and continuous data coverage along seismic trajects several times longer than the active spread length. The data evaluation results of the three seismic methods are jointly presented for easier geological and geotechnical cross reference. Guide lines are provided for the appropriate choice of the field data acquisition parameters as a function of the required investigation depth and of the desired degree of imaging resolution.