This paper describes research at Heriot-Watt University into methods of discriminating and classifying seabed sediments by means of their specular response to acoustic illumination in the frequency range 25-100 KHz. Simulated sediment beds representing sand, soft layered clay and hard fissured clay have been tested in the laboratory and their acoustic signatures analysed using several numerical and statistical methods. The results suggest that it is possible in the first instance to discriminate between those types of sediment on the basis of the frequency content of their acoustic signatures. It is believed that the results also suggest a basis for a priori classification of sediments based on genetic features recognisable in the statistics of the ultrasound signatures, and a tentative scheme is proposed in this paper.
|Title of host publication||Proceedings of the First International Offshore and Polar Engineering Conference|
|Number of pages||10|
|Publication status||Published - 1991|
|Event||1st International Offshore and Polar Engineering Conference 1991 - Edinburgh, Scotl|
Duration: 11 Aug 1991 → 16 Aug 1991
|Conference||1st International Offshore and Polar Engineering Conference 1991|
|Period||11/08/91 → 16/08/91|