The effectiveness of electromagnetic (EM), ground penetrating radar (GPR) and seismic refraction (SR) were evaluated by surveying a shallow trench in which a number of objects of varying composition and size were buried. The trench was excavated in granular calcareous fill material. An experienced geophysical contractor was asked to provide blind predictions of object locations using each of the techniques in turn. GPR with a 400 MHz antenna was the most successful, followed by SR and EM surveying. GPR and SR were also carried out at the port of Hilo to investigate complex subsurface conditions.
- Ocean, Offshore and Arctic Engineering Division
Effectiveness of Geophysical Methods in Calcareous Harbor Fills
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Brandes, HG. "Effectiveness of Geophysical Methods in Calcareous Harbor Fills." Proceedings of the ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering. Volume 6: Polar and Arctic Sciences and Technology; Offshore Geotechnics; Petroleum Technology Symposium. Nantes, France. June 9–14, 2013. V006T10A020. ASME. https://doi.org/10.1115/OMAE2013-10400
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