Instrument: Bottom Sediment Grab Samplers

Instrument Short Name: BSGS
(http://vocab.nerc.ac.uk/collection/L05/current/50/)
Instrument Description:

These samplers are designed to collect an accurate representative sample of the sediment bottom. The bite of the sampler should be deep enough so all depths are sampled equally. The closing mechanism is required to completely close and hold the sample as well as prevent wash-out during retrieval. Likewise, during descent the sampler should be designed to minimize disturbance of the topmost sediment by the pressure wave as it is lowered to the bottom.

PI supplied instrument name: Van Veen Grab
Dataset-specific description

Sampling and Analytical Methodology:
Animal samples were collected using a variety of baited traps. Sediment samples were collected using megacores on a free vehicle lander. Rock samples were collected using a van veen style grab on a free vehicle lander. Water samples were collected using a conventional CTD rosette.