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Posted by dwowens on 29-Aug-09 07:00
Posted by dwowens on 27-Aug-09 07:00
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(Click the number buttons below to see previous blog posts.)


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29-Aug-09 07:00
On Friday August 28, the R/V Thompson and ROPOS crews deployed our instrument platform to Folger Deep. Instruments on the platform include:
  • conductivity-temperature-depth (CTD) gauge (SeaBird SeaCAT SBE 16plus)
  • echosounder (Biosonics DT-Xu)
  • acoustic Doppler current profiler (RDI Workhorse Monitor 300KHz)
  • oxygen sensor (Aanderaa optode)

Two additional instruments, a Naxys hydrophone and a bottom pressure recorder, were positioned close to the instrument platform.

This platform is connected to the Folger Passage node.  We will return later to run a 700m cable from the node to the Folger Pinnacle.

Posted by dwowens on 29-Aug-09 07:00
27-Aug-09 07:00
Wally the crawler now sits among hydrate outcrops 867m below sea level. He's tethered to the Barkley Hydrates instrument platform by a 70m extension cable festooned with flotation blocks to keep it off the seafloor and away from Wally's tractor treads.

Wally's equipment includes:

  • conductivity-temperature-pressure gauge
  • webcam and lights
  • methane sensor
  • compass

After transporting Wally to the seafloor, ROPOS set out markers around a hydrate mound and along a pathway to be followed over the coming months and years. Then ROPOS unwound the extension cable and connected it to the instrument platform. This platform also connects, via a 1430m extension cable, to our Barkley Canyon Axis instrument platform.

We have yet to test Wally in operation, but hope to have an opportunity to power him up and go for a test drive sometime soon!

Posted by dwowens on 27-Aug-09 07:00
(Click the number buttons below to see previous blog posts.)
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