Samples were extracted from the ground surface with standard 120 mL polypropylene containers, and also at 20 cm below the surface using a sediment corer
. Another set was taken in April 2012, from Platanias Port (Figure 2).
For the past three years, a team of engineers from the British Antarctic Survey and the National Oceanography Centre have pushed the boundaries of polar technology to design and build a titanium water-sampling probe and sediment corer
capable of being lowered down the huge borehole in the ice made by a custom-built hot-water drill.
The group will bring with it a hot-water drill to penetrate the ice, water-sampling probe and sediment corer
In the present study, a drop-weight sediment corer
(diameter ~ 7.6 cm) was used in order to minimize sample disturbance and to examine sediment composition beneath the bed surface.
The sediment corer
, made of a 48 cm long aluminium pipe with an inner diameter of 2.75 cm, took a core with a surface of 5.94 [cm.sup.2].
It was the first in a series of changes to the vessel to accommodate a 45-meter (150-foot) sediment corer
, the longest of its kind in the U.S.
Chlorophyll concentrations were also determined from the water column samples collected with a Kemmerer bottle and sediment samples collected with a sediment corer
(further methodological details are provided in Gradinger et al., 2009b).
Scientists can load up to 1,000 pounds of gear, including include sediment corers
, temperature probes, water samplers, and biological sample pumps, in a basket mounted on the front of the submersible.