Deep-Ocean Observatory System

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ACO Update

• ACO Deployment Report 2/5/09

• 10/29/08

Due to unforeseen complications in the deployment of the ALOHA Cabled Observatory, the Live Audio link will be unavailable until further notice. Please check back soon for further information.

• 10/20/08

  For those listening at 6:30 PM HST, you heard a large bang.  That was a
  navigation transponder glass ball that imploded about 70 meters directly
  above the hydrophone as we were preparing to set down the observatory
  package.  We are now on our way back to the surface to get the spare and
  try again. Delay to schedule is roughly 12 hours.
   

• ACO Cruise Schedule

  All times are HST (=UT -10 Hours)

  RED events can be listened to in real-time
  
   

  October 18, 0815 Depart Honolulu
  
  October 18, 18:00 Arrive on site, TEST ACOUST RELEASES
  
  October 18, 20:00 begin Navig. transponder array installation
  October 19, 02:00 Elevator Deploy
  October 19, 08:30 Begin JASON dive #1 to locate the cable termination and
  survey
  October 19, 11:15 JASON on bottom, moving towards cable termination
  October 19, ~15:30 JASON working around hydrophone and cable termination
  October 20, ~05:30 JASON leaves bottom
  October 20, ~08:00 JASON back on surface
  
  October 20, ~ 22:00 Lower Observatory sled to the site 4,800 m below
  
  October 21, ~08:00 Begin JASON Dive #2 to plug-in Observatory
  October 21, ~10:30 JASON surveys observatory
  October 21, ~12:30 JASON unplugs hydrophone [end of acoustic data for a
  few days]
  October 21, ~14:30 JASON plugs in Observatory [CAT and ADCP data available]
  October 22, ~08:00 End of dive #2
  
  October 22, ~09:00 Recover Floating Proof Module
  
  October 22, ~22:00 Lower TAAM (Thermistor ARRAY - Acoustic Modem) to
  Observatory site
  
  October 23, ~12:00 begin JASON Dive #3 TAAM Plug-in
  October 24 ~12:00 end of dive #3
  
  October 25, ~00:00 begin JASON Dive #4  Hydro Experiment Deploy
  October 25, ~04:30 Plug-in Hydrophone Experiment
  October 25, ~18:00 END DIVE #4
  
  October 25 ~20:00 Recover LBL Navigation array
  
  October 26, ~ 08:00 Begin Dive #5 Science Dive Ka'ena Ridge
  October 28, ~22:00 END DIVE #5
  
  October 29, 0600 Arrive C buoy, Honolulu, Harbor

   

• Although the whales are gone for the season, the ACO Proof Module hydrophone is still operational. The ACO  is scheduled to be deployed between October 17, and October 28, so live audio will be intermittent. Check back with us for further updates on system status.

Page Last Modified 02/06/2009