FN Archimer Export Format PT J TI Detailed monitoring reveals the nature of submarine turbidity currents BT AF Talling, Peter J. Cartigny, Matthieu J. B. Pope, Ed Baker, Megan Clare, Michael A. Heijnen, Maarten Hage, Sophie Parsons, Dan R. Simmons, Steve M. Paull, Charlie K. Gwiazda, Roberto Lintern, Gwyn Hughes Clarke, John E. Xu, Jingping Silva Jacinto, Ricardo Maier, Katherine L. AS 1:1;2:2;3:2;4:2;5:3;6:4;7:12;8:6;9:6;10:7;11:7;12:8;13:9;14:10;15:5;16:11; FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;11:;12:;13:;14:;15:PDG-REM-GEOOCEAN-ASTRE;16:; C1 Departments of Geography and Earth Sciences, University of Durham, Durham, UK Department of Geography, University of Durham, Durham, UK Ocean BioGeosciences Group, National Oceanography Centre, Southampton, UK School of Ocean and Earth Sciences, University of Southampton, Southampton, UK Geo-Ocean, University of Brest, CNRS, IFREMER, Plouzané, France Energy and Environment Institute, University of Hull, Hull, UK Monterey Bay Aquarium Research Institute, Moss Landing, CA, USA Geological Survey of Canada, Natural Resources Canada, Sidney, British Columbia, Canada University of New Hampshire, Durham, NH, USA Southern University of Science and Technology, Guangdong, China National Institute of Water and Atmospheric Research Te Whanganui-a-Tara Wellington, Aotearoa, New Zealand Geo-Ocean, University of Brest, CNRS, IFREMER, Plouzané, France C2 UNIV DURHAM, UK UNIV DURHAM, UK NOC, UK UNIV SOUTHAMPTON, UK IFREMER, FRANCE UNIV HULL, UK MONTEREY BAY AQUARIUM RES INST, USA GEOL SURVEY CANADA, CANADA UNIV NEW HAMPSHIRE, USA UNIV SOUTHERN SCI TECHNOL, CHINA NIWA, NEW ZEALAND UBO, FRANCE SI BREST SE PDG-REM-GEOOCEAN-ASTRE UM GEO-OCEAN IN WOS Ifremer UMR WOS Cotutelle UMR copubli-france copubli-europe copubli-univ-france copubli-int-hors-europe copubli-sud IF 42.1 TC 6 UR https://archimer.ifremer.fr/doc/00849/96122/104485.pdf LA English DT Article AB Seafloor sediment flows, called turbidity currents, form the largest sediment accumulations, deepest canyons and longest channels on Earth. It was once thought that turbidity currents were impractical to measure in action, especially given their ability to damage sensors in their path, but direct monitoring since the mid-2010s has measured them in detail. In this Review, we summarize knowledge of turbidity currents gleaned from this direct monitoring. Monitoring identifies triggering mechanisms from dilute river plumes, and shows how rapid sediment accumulation can precondition slope failure, but the final triggers can be delayed and subtle. Turbidity currents are consistently more frequent than predicted by past sequence-stratigraphic models, including at sites >300 km from any coast. Faster flows (more than ~1.5 m s–1) are driven by a dense near-bed layer at their front, whereas slower flows are entirely dilute. This frontal layer sometimes erodes large (>2.5 km3) volumes of sediment, yet maintains a near-uniform speed, leading to a travelling-wave model. Monitoring shows that flows sculpt canyons and channels through fast-moving knickpoints, and shows how deposits originate. Emerging technologies with reduced cost and risk can lead to widespread monitoring of turbidity currents, so their sediment and carbon fluxes can be compared with other major global transport processes. PY 2023 PD SEP SO Nature Reviews Earth & Environment SN 2662-138X PU Springer Science and Business Media LLC VL 4 IS 9 UT 001044304900001 BP 642 EP 658 DI 10.1038/s43017-023-00458-1 ID 96122 ER EF