Evaluation of a SQUID-based receiver for transient electromagnetics in Bad Frankenhausen, Germany
in: Temporal Proceedings (2015)
Within the framework of the multidisciplinary research project called INFLUINS, INte-
grated FLUid dynamics IN Sedimentary basins, we use a highly sensitive magnetic field
receiver based on Superconducting Quantum Interference Devices (SQUIDs) for the tran-
sient electromagnetic method and compare its performance specifications with a commercially available induction coil. Four fixed loops TEM measurements with 10 - 20 receiver stations each have been conducted along a survey line perpendicular to the known geologic strike direction at the test site Esperstedter Ried in Northern Thuringia, Germany. The signals of the SQUID receiver provide significantly better quality and are less affected by natural and man-made noise sources than the ones of the induction coil, which is proved by data error and noise measurement analysis. As a result, the 1D inverse modeling results of the SQUID data show lower misfit ratios and are more reliable compared to the coil.
DOI: Array