Particle Size Analysis (PSA) for seabed sediment samples collected in the
North Sea during three Cefas cruises on RV Corystes (Cruise Codes CORY
10/2001, CORY 09/2002 and CORY 8x/2003) as part of a study on sediment
biogeochemistry under Defra project A1224 in the period 2001 - 2003.