Abstract
Chapter 3 presented the main characteristics of the Acoustic Corer™ and Chapter 4 details how to use the low and high-frequency datasets. Backed up with many field examples from commercial surveys in a variety of water depths and environments, the chapter shows how the volumetric datasets produced by the Acoustic Corer™ reveal high-resolution details (decimetric scales), for areas 12 m in diameter and down to depths of 40 m. The examples show removal of strong out-of-range reflections, identifications of non-specular returns, identifications and sizing of individual targets (e.g. boulders). Acoustic textures of horizons and substrate variations are presented for complex seabeds and compared with borehole data and Cone-Penetrometer Testing, clearly illustrating how geotechnically relevant information can be extracted at much larger scale without affecting the seabed. The combination of acoustic corer measurements with traditional tools is illustrated in sites with complex geology, including gassy sediments. These strands are weaved into customer reports, showing synthetically and simply the geotechnical information necessary to offshore activities and several examples are provided.
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Guigné, J.Y., Blondel, P. (2017). Acoustic Seabed Interrogation. In: Acoustic Investigation of Complex Seabeds. SpringerBriefs in Oceanography. Springer, Cham. https://doi.org/10.1007/978-3-319-02579-7_4
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DOI: https://doi.org/10.1007/978-3-319-02579-7_4
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