21 October 2020
In this EAGE E-Lecture: "Feasibility of 3D random seismic arrays for subsurface characterizations in urban environments" evaluates the feasibility of random - jittered seismic sampling for active and passive seismic imaging of potential contaminant migration
pathways in urban environments. By using datasets acquired at a contaminated site in Varberg city in southern Sweden, Bojan Brodic compares the tomographically obtained velocity models from active-source jittered array versus conventional 2D landstreamer
seismic data acquisition.
Apart from the active-source part, the ambient noise recorded on the random seismic array is used further for retrieval of the Green's functions with surface waves successfully obtained. The processes and steps necessary for both active-source and
passive seismic analyses are explained in an illustrative and easily understandable manner. The results show that the jittered seismic sampling shows advantages over conventional 2D landstreamer seismic by providing 3D velocity model of the bedrock
surface and it's undulations that are used as contamination migration pathways and potential of the random seismic array for ambient noise studies.
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