Dec. 19, 2020 – Measuring the acoustic signatures of animals by Brandyn Lucca, Stony Brook University

Measuring the acoustic signatures of animals involves sending a soundwave into an aquarium and measuring the echo that returns from the animal. This echo allows us to measure the ‘target strength’ of an animal, which can be thought of as their acoustic signature. We can infer target strength for entire taxonomic groups (like deep-sea fishes or squids) when we measure target strength from many individuals.

Dec. 18, 2020 – The Jason ROV Experience by Fred Denton, WHOI

Roughly half of the weight that we bring on a ship is devoted to Jason's Launch and Recovery System or LARS. Our particular one-of-a-kind LARS consists primarily of an umbilical cable, an electric winch, and a hydraulic crane. Now I'll tell you a bit more about this Jason LARS, since its what I know best.

Dec. 17, 2020 – Down 3000 meters by Hannah Blair, Stony Brook University

This last ADEON cruise is beginning to wrap up, with our last CTD and net tow of the trip completed yesterday through last night in almost 3000 m of water. We moved to this deeper area further off of the continental shelf so the Jason crew could accomplish some engineering dives, sending the ROV Jason out to test equipment and techniques in a dive that lasted most of a day! It’s been really cool to hear about the Jason and watch the crew at work – getting the chance to look around at the sea floor through Jason’s cameras has definitely been a highlight of this trip!

Dec 16, 2020 – Grant Milne, UNH

Hello AR49 ADEON cruise blog readers! It’s the new guy, back again to tell you more about the fantastic experiences I’ve had at sea. The other bloggers have done a great job describing all of the research happenings on board ship, including lander recoveries, Jason dives, and net tows on the night crew. Besides all this rigorous and exciting work, there have been a number of other interesting things happening during our cruise.

Dec. 15, 2020 - 100% recovery success for ADEON team! by Carmen Lawrence, JASCO

We retrieved the last lander of the ADEON project! It’s a great feeling to have ended our ADEON adventure with every single lander accounted for, despite some recoveries being unconventional. Aside from our primary retrieval method (using acoustic releases), we have had ROV Jason recovery, fishing vessel recovery, and even one that surfaced 10 days after sending the release codes (which was rescued by a very generous nearby vessel – M/V Alucia).

December 14, 2020 - Glamour Shots At Sea by Joseph Warren, Stony Brook University

Hello Land Dwellers!  We’re down to the last week of our cruise, so we’re closing in on the last few stations for the ADEON project and about to start the JASON group’s portion of the cruise.  The ship should be in deep (2000+ m) water for their engineering dives which means we (the night watch) may have the chance to do some deep sea net tows.

Dec. 13, 2020 - Operating the ROV Jason by Korey Verhein, WHOI

I’ve been sailing on research cruises since 2008 as an operator of National Deep Submergence Facility vehicles such as Alvin, Sentry, and most recently the ROV Jason.  The job is challenging and satisfying, but there are some drawbacks.  For this job we give up a lot of time away from home, friends, and family to support science operations.  We live on a ship for up to two months at sea, sometimes over holidays.

Dec 12, 2020 - Sunrise...Sunset... by Anthony Lyons, UNH

In the musical, Fiddler on the Roof, this song is performed at the wedding of Tevye and Golde's eldest daughter. The parents are amazed at how quickly the years have passed and are reminded at how full all those years were with events both happy and sad.  As we sail and work on the final ADEON cruises, like Tevye and Golde, I marvel at how quickly these last 4+ years of research cruises have passed. Many events, small and large, bringing joy and satisfaction each cruise – the successful lander release and retrieval, watching and participating in extremely interesting work by non-ADEON cruise participants, warm, sunny days on the deck in the middle of the Gulf Stream, and, importantly, new friendships begun.
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