Abstract
Broad-beam acoustic profiling systems operating at 3.5 kHz have been used in numerous studies of marine and glacimarine sediments. However, the depth-variable footprint diameter of 3.5 kHz systems is relatively large, producing a low horizontal resolution (Fig. 1). By contrast, acoustic systems which use a so-called “parametric principle” have significantly smaller beam-widths. In the case of the Krupp-Atlas Parasound system, beam-width is 4°, producing a footprint diameter of only 7% of water depth (Fig. 1). In 250 m of water, the Parasound system has a footprint diameter of about 15 m compared with 150 m for a conventional broad-beam 3.5 kHz system.
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© 1997 Chapman & Hall
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Dowdeswell, J.A., Whittington, R.J., Villinger, H. (1997). Iceberg Scours: Records from Broad and Narrow-Beam Acoustic Systems. In: Davies, T.A., et al. Glaciated Continental Margins. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-5820-6_3
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DOI: https://doi.org/10.1007/978-94-011-5820-6_3
Publisher Name: Springer, Dordrecht
Print ISBN: 978-0-412-79340-0
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