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Javier Escartín@jescartin.bsky.social · 2mo ago

And during #NODSSUM, to gather additionnal images from biota, ecosystems, and dumped radioactive waste barrels, the deep-sea camera system SCAMPI, that flies two to three meters above the seafloor, taking snaps every 10 seconds, over several km, towed behind the ship.

Control of the SCAMPI deep-towed camera system, that feeds video to the ship so it can be navigated 2-3 m above the seafloor, during the NODSSUM cruise. Credits: Quentin Gaillet, NODSSUM cruise, CNRS, Flotte Océanographique FrançaiseThe deep-towed camera system SCAMPI on the deck of Pourquoi Pas?, during the NODSSUM cruise. Credits: Quentin Gaillet, NODSSUM cruise, CNRS, Flotte Océanographique FrançaisePhoto taken by the towed camera system SCAMPI showing a group of 6 barrels dumped at the seafloor during one of the tows conducted during the NODSSUM cruise. Credits: NODSSUM cruise, CNRS, Flotte Océanographique FrançaiseSea lily on rocky seafloor photographed by the SCAMPI camera system during one of the NODSSUM cruise camera tows. Credits: NODSSUM cruise, CNRS, Flotte Océanographique Française
Javier Escartín@jescartin.bsky.social · last yr.

🧪⚒️ #NODSSUM cruise - On land, material & samples make their way back to home labs. And this morning we showed sonar images of barrels & photos taken by Ulyx flying at ~10 m above seafloor. Lots to do back in labs & offices. It was intense - good intense. Images: see copyright etc in thread

Copyright Flotte Oceanographique Française - Nodssum cruise. Swath of Ulyx sonar data (left) and close-up of the barrels at the seafloor, showing as bright spots (from box on the left)Copyright: Flotte Océanographique Française - Campagne NODSSUM. Barrel dumped at the seafloor at about 4700 m water depthCopyright: Flotte Océanographique Française - Campagne NODSSUM. Barrel at the seafloor showing a probable leak of unknown material - probably tar used to embed the waste in the barrels. Copyright: Flotte Océanographique Française - Campagne Nodssum. Sonar coverage during a dive of AUV Ulyx (gray background) covering a zone of approximately 6x3 km, with sonar swaths of about 400 m (horizontal stripes). The identified barrels shown as black dots line up along tracks followed by ships during barge dumping.