Shelf Sea Biogeochemistry blog

Wednesday, 13 May 2015

Calm Seas


Calm seas: Credit: Gary Fones

12th of May saw some much appreciated calm weather and lots of science activity aboard the RRS Discovery. Lunchtime saw the deployment of the PML Buoy Profiler, which is a SSB PhD project (more of this in a latter blog from Rich Sims, PML).

 Picture of PML Buoy. Credit: Gary Fones

Sediment coring followed this, this is a key activity of any benthic cruise. We are using a number of coring devices to collect sediment from the seabed beneath us, which is 100m down. On this research cruise we are using a NIOZ corer which is used to collect sediment (mud) from the ocean floor,  a mega-corer (able to take up to 12 undisturbed samples in clear plastic tubes),  and a large SMBA box corer which is designed to take a 600mm square, undisturbed sediment sample up to a maximum depth of around 450mm.


 NIOZ corer recovered to deck. Credit: Gary Fones
Wednesday 13th of May started with calm seas and a lovely sunrise. This was followed by a very successful recovery of the NOCL mini-stable lander that has been on the seabed the last few days gathering in-situ data (more of this in a latter blog) which will be used by the scientists to understand processes happening at the boundary between the sea bed and water column.


Recovery of Lander: Credit:Richard Cooke


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