A study unleashes an ROV equipped with cutting-edge multibeam and laser bathymetry to capture an unprecedented view of a submerged 'Great Canyon.'
Additionally, the canyon boasts walls that rise up to 5,580 feet tall, and its deepest point lies about 2.5 miles below the ocean's surface.
Attached to an ROV , the LASS utilizes cutting-edge multibeam and laser bathymetry. Essentially, as the ROV hovers 10 feet above the seafloor, it uses lasers and sonar to scan the bottom. "In this geological project, the lidar bathymetry data revealed changing centimeter-scale textures in the sediment on the floor of Monterey Canyon," said MBARI Principal Engineer Dave Caress in a"[These] would have been undetectable by more traditional methods like ship-based sonar or even the autonomous mapping robots we use to map at one-meter scale."
One focus was on fast-moving turbidity currents, similar to underwater landslides, reaching speeds up to 7.4 miles per hour . These currents reshape the canyon floor, eroding and filling in features.
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Clearest-ever seafloor maps show deep-sea 'Grand Canyon' off US coast in stunning detailHarry is a U.K.-based staff writer at Live Science. He studied Marine Biology at the University of Exeter (Penryn campus) and after graduating started his own blog site 'Marine Madness,' which he continues to run with other ocean enthusiasts. He is also interested in evolution, climate change, robots, space exploration, environmental conservation and anything that's been fossilized. When not at work he can be found watching sci-fi films, playing old Pokemon games or running (probably slower than he'd like).
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