What is the method of attributing subbottom depths to samples from cores?
Ideally a sample from a core will have a subbottom depth assigned in terms of meters below the sediment surface. However this is not always the case. While this information may have to be left unknown if not given by the original researchers, some limits can be placed if the sampler type is known. For example a Shipek Grab usually has only 5 cm of penetration. Then a subbottom range of 0-0.05 m can be assigned. In cores that may be several meters long, therefore the limitation is less strict.
