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Updates

Robots to the Rescue

August 28, 2023

August 26, 2023: Just as the team was about to get underway to Southern Hydrate Ridge, a call came in from the R/V Rachel Carson. One of their AUVs was drifting neutral at ~40 m water depth following a mission and couldn’t be recovered. They had attempted to send a signal to the AUV to release the emergency drop weights (which would allow the long, yellow, torpedo-shaped vehicle to float to…

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Ready to Go

August 28, 2023

Everything is loaded and the team is ready to go.  The Global Surface Mooring, the largest Irminger Mooring, is placed beneath the a-frame ready for deployment.  Chris Basque, John Jordan, Mackenzie Stuart prepare deck equipment and complete the final connections of all the riser components.  The riser connects the buoy to the anchor, but also has conductors for powering and communicating with fixed instruments at various water depths along the…

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Buoy Assembly

August 27, 2023

It can be a tight fit.  Before loading, the Global Surface Buoy must be assembled, and instruments mounted and cabled.  Here Mackenzie Stuart prepares to place the buoy well and tower into the buoyancy foam.  Once that is done, James Kuo and Chris Basque get to work mounting the instruments and running the power and data cables.  The buoy will then be loaded on the vessel and the remaining mooring…

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Armstrong Arrives!

August 27, 2023

The R/V Neil Armstrong has arrived in Reykjavik! The team has started loading all the Irminger materials onto the vessel. Once onboard, the team will perform final assembly of the moorings and make ready for departure.

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Small Boat Operations

August 25, 2023

August 25th, 2023: The team is now at Axial Base. ROV Jason was launched on dive J2-1530 to cut the EM cable of the profiler pod (which had been stuck at 40 m below the surface). Using a hydraulic bandsaw on the front of the ROV, the cut was completed and the ROV returned to the ship. Once Jason was secure, a small boat was launched to pick up the…

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Getting Gliders Ready

August 25, 2023

Once the mooring build is complete, the mobilization team can focus on the mobile assets.  Three gliders are planned for deployment at the Irminger Array and satellite and acoustic communications must be tested prior to mobilizing on the research vessel.  The vehicles are placed outside and in proximity to the subsurface moorings to verify sending and receiving of data.  Acoustic communications are used by the gliders to collect data from…

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Build in Reykjavik

August 25, 2023

The Irminger cruise team continues to make progress building the moorings in Reykjavik, Iceland. The mooring systems are integrated and then “burned in.” This is a test period for the power, data, telemetry, and instrument systems to ensure everything is operational prior to loading the vessel. Above James Kuo and Irene Duran verify the operation of subsurface instrument frames.

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Demob and Mobilization

August 25, 2023

August 23-24, 2023: Demobilization of Leg 1 and mobilization for Leg 2 have been completed.  Some personnel have been swapped. Eight new  VISIONS students have arrived and are settling in onboard, ready to acquire their “sea legs.”  And the  Leg 1 infrastructure was offloaded to be replaced by lots of gear for Leg 2. The engineering team completed initial instrument testing in preparation for the  Thompson’s departure on Thursday, August…

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Mobilization Started

August 23, 2023

The Irminger mobilization has begun!  The team is in Reykjavik, Iceland building and testing the Irminger Array Global Surface Mooring, Hybrid Profiler Mooring, and Flanking Moorings.  John Lund, the cruise Chief Scientist, and his team are assembling the Global Surface Mooring buoy well and tower.  The well houses the power, data collection, and telemetry systems for the mooring.  Meteorological instruments, wind turbines, and solar panels are mounted on the buoy…

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End of Leg One

August 23, 2023

August 22, 2023: Leg 1 came to an end under calm seas and blue skies, as compared to four days of weather during the leg, with winds up to 35 knots (40 mph).  Despite the weather, the RCA team had multiple successes.  They turned two science platforms on each of the Shallow Profiler Moorings at the Oregon Offshore and Slope Base sites, turned the low power junction box at Slope…

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