Lost Antarctic Submarine Ran Mapped Ice Shelf Secrets Before Vanishing

Executive Briefing

• Discovered that Dotson Ice Shelf's underside features terraces, channels, and teardrop pits up to 1,000 feet long
• Confirmed warm Circumpolar Deep Water drives uneven melting, with western Dotson eroding faster than the east
• Revealed the shelf acts as a doorstop for land glaciers; thinning risks accelerating sea-level rise worldwide
• Disappeared in early 2024 with no debris found despite helicopter, drone, and acoustic searches
• Antarctic melt has already raised global sea levels roughly half an inch since 1979, data shows