Abstract
As part of the NERC North Sea Project (1987–1992), dissolved concentrations of the metals Cd, Cu, Pb, Ni and Zn were determined at over 100 locations on each of four survey cruises. Model simulations are used to relate these observed distributions to their sources, namely: 1. inflows from the northern North Sea and the English Channel, 2. atmospheric and 3. riverine. A multiple linear regression technique is used to determine the dissolved concentration in each of the inflow sources. These derived values are shown to be in fairly good agreement with values cited in the 1987 Quality Status Report. The present study illustrates the relative contribution of each source in differing regions of the southern North Sea and also provides a quantitative assessment of the agreement between model and observed dissolved metal distributions.
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