A daily blog from IMAS students on a sea voyage from Sydney to Hobart as part of their Masters degree in Marine and Antarctic Science. IMAS is the the Institute for Marine and Antarctic Studies at the University of Tasmania.
Thursday, February 28, 2013
Tom Coad - Day 1
The voyage began bright and early as we sailed through Sydney Harbour
on marine research vessel the 'Southern 'Surveyor'. As we sailed
under the iconic harbour bridge it was not long before we were at sea
with land far out of sight. With intentions to sample two stations
before nightfall we began an southeastward transect from the coast.
Weather has been reasonably accommodating thus far, with relatively
light swell and winds just under 30 knots, although some voyagers are
already feeling the effects of the motion of the ocean.
Operations began with the deployment of the CTD (Conductivity
Temperature Depth). This instrument is also fitted with a
transmissometer, fluorometer and PAR, oxygen and nitrate sensors. The
CTD was accompanied by a total of six XBTs (eXpendable
BathyThermograph) being deployed at the beginning and at intervals
throughout its descent. Bottles from the CTD will analysed for oxygen,
chlorophyll and nutrients.
Upon retrieval, the CTD was promptly followed by a surface plankton
net tow that yielded high abundances of zooplankton. The CPR
(Continuous Plankton Recorder) was also deployed for its opportunistic
crossing of Bass Straight with data collected adding to the
comprehensive and long term data set along this transect.
After a successful first day with all deployments going off without a
hitch, there is excitement and hopes for some interesting findings
surrounding an eddie we will approach within the next 24 hours.
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