Concentration of organic carbon from CHN analysis of sediment samples
collected by box core from sites in the North Sea during three Cefas cruises
on RV Corystes (Cruise Codes CORY 10/2001, CORY 09/2002 and CORY 8x/2003).
Cores were sliced into 1cm samples at a range of depths from 0-17cm. These
have been used to summarise profiles and describe spatial variance within four
Ecohydrodynamic Units (EHUs).