Over the years, contaminants on sediment have been measured in different ways. For example, in the seventies the whole sample was measured while nowadays measurements take place only on the small fraction ( Additional sediment samples are collected during the Belgica cruise 2015/06 to perform analyses on different grain size fractions. These measurements will be used to test the best conversion allowing us to compare the pollution level over the years.





(Copyright: Hans Hillewaert)