Durham Coast Benthic substrate map
Description
An acoustic survey of the Durham Coast was carried out by SeaMap Research Group of the University of Newcastle-upon-Tyne (10-13 February 1998) using a vertical acoustic ground discrimination system, the RoxAnn. The area was surveyed using 3 km long parallel tracks, 250 m apart. Acoustic mapping using the RoxAnn system provides data on the physical nature of the sea bed — depth, roughness and hardness. The acoustic data have no biological meaning unless they are related to biological assemblages, determined from direct observations or samples of the sea bed at pre-determined point locations. So sub-time grab samples and video drops were taken within the survey area.
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