Fig. 1.

A reconstructed broken-stick abstracted time–depth profile of a typical drift dive. The black circles indicate the two at-surface and four at-depth inflection points chosen by the broken-stick algorithm on-board the satellite-relay data loggers (SRDLs). The segment between two successive inflection points describes each dive fragment, with five fragments per dive profile in total. In this example, the second dive fragment is the drift fragment of this dive profile.