Trematomus bernacchii
<------Trematomus pennelii ; Laternula elliptica
------>
| Thursday the focus of activities was to collect tissue samples and to
drill more holes with the Reed Drill. Diving from the dive tent located
at Station 53, Rob Robins and Christian McDonald collected two species of
fish and one species of bivalve from the vicinity of the intake jetty. The
fish collected were Trematomus bernacchii (12 specimens) and Trematomus
pennelii (7 specimens) and the bivalve was Laternula elliptica (16 specimens),
see pictures by Norbert Wu. |
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Trematomus bernacchii |
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<------Trematomus pennelii ; Laternula elliptica
------>
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| In the afternoon 5 new diving holes were drilled using the Reed Drill.
The drill is towed to the location with a big Cat tractor. Once on location,
the drilling rig is stabilized using its outriggers and drilling begins
(see photo). As the hole is drilled channels have to be dug into the mound
of crushed ice produced when drilling (see photo). This allows the water
to drain when the ice is finally breached (see photo). After drilling is
completed, the site is cleared with the tractor to make a level surface
for the dive tent. When the site has been cleared, all the snow and ice
is removed from the hole until all that remains is clear water (see photo
with Andrew Klein, Kristi Jones, and Sally Morehead from left to right). |
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