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  • 1
    Keywords: mass movements ; subaqueous landslides ; geohazards
    Description / Table of Contents: Advancing from subaqueous mass movement case studies to providing advice and mitigation / D. Gwyn Lintern, David C. Mosher and Martin Scherwath / Geological Society, London, Special Publications, 477, 1-14, 21 June 2019, https://doi.org/10.1144/SP477-2018-190 --- Tectonics and mass movements --- The nature of small to medium earthquakes along the Eastern Mediterranean passive continental margins, and their possible relationships to landslides and submarine salt-tectonic-related shallow faults / Oded Katz and Yariv Hamiel / Geological Society, London, Special Publications, 477, 15-22, 6 March 2018, https://doi.org/10.1144/SP477.5 --- Spatial and temporal cross-cutting relationships between fault structures and slope failures along the outer Kumano Basin and Nankai accretionary wedge, SW Japan / J. K. Lackey, G. F. Moore, M. Strasser, A. Kopf and C. S. Ferreira / Geological Society, London, Special Publications, 477, 23-36, 6 March 2018, https://doi.org/10.1144/SP477.10 --- Evidence for surface sediment remobilization by earthquakes in the Nankai forearc region from sedimentary records / Natsumi Okutsu, Juichiro Ashi, Asuka Yamaguchi, Tomohisa Irino, Ken Ikehara, Toshiya Kanamatsu, Yusuke Suganuma and Masafumi Murayama / Geological Society, London, Special Publications, 477, 37-45, 27 March 2018, https://doi.org/10.1144/SP477.22 --- Slope failures along the deformation front of the Cascadia margin: linking slide morphology to subduction zone parameters / Michael Riedel, Michelle M. Côté, Morelia Urlaub, Jacob Geersen, Nastasja A. Scholz, Kathrin Naegeli and George D. Spence / Geological Society, London, Special Publications, 477, 47-67, 27 April 2018, https://doi.org/10.1144/SP477.33 --- Slope failure and mass transport processes along the Queen Charlotte Fault, southeastern Alaska / Daniel S. Brothers, Brian D. Andrews, Maureen A. L. Walton, H. Gary Greene, J. Vaughn Barrie, Nathan C. Miller, Uri ten Brink, Amy E. East, Peter J. Haeussler, Jared W. Kluesner and James E. Conrad / Geological Society, London, Special Publications, 477, 69-83, 21 May 2018, https://doi.org/10.1144/SP477.30 --- Slope failure and mass transport processes along the Queen Charlotte Fault Zone, western British Columbia / H. Gary Greene, J. Vaughn Barrie, Daniel S. Brothers, James E. Conrad, Kim Conway, Amy E. East, Randy Enkin, Katherine L. Maier, Stuart P. Nishenko, Maureen A. L. Walton and Kristin M. M. Rohr / Geological Society, London, Special Publications, 477, 85-106, 24 May 2018, https://doi.org/10.1144/SP477.31 --- Mass-wasting processes along the margins of the Ulleung Basin, East Sea: insights from multichannel seismic reflection and multibeam echosounder data / Senay Horozal, Jang-Jun Bahk, Sang Hoon Lee, Deniz Cukur, Roger Urgeles, Gil Young Kim, Seong-Pil Kim, Byong-Jae Ryu and Jin-Ho Kim / Geological Society, London, Special Publications, 477, 107-119, 30 April 2018, https://doi.org/10.1144/SP477.18 --- Assessment of the effect of mass-transport deposits on fault propagation in Penobscot area, offshore Nova Scotia / Tuviere Omeru, Samson I. Bankole, Byami A. Jolly, Obafemi S. Seyi and Joses B. Omojola / Geological Society, London, Special Publications, 477, 121-131, 27 March 2018, https://doi.org/10.1144/SP477.23 --- Open-slope, translational submarine landslide in a tectonically active volcanic continental margin (Licosa submarine landslide, southern Tyrrhenian Sea) / M. Sammartini, A. Camerlenghi, F. Budillon, D. D. Insinga, F. Zgur, A. Conforti, M. Iorio, R. Romeo and R. Tonielli / Geological Society, London, Special Publications, 477, 133-150, 24 May 2018, https://doi.org/10.1144/SP477.34 --- Mass transport deposits, fluid flow and gas hydrates in passive margins --- Mass wasting along the NW African continental margin / S. Krastel, W. Li, M. Urlaub, A. Georgiopoulou, R. B. Wynn, T. Schwenk, C. Stevenson and P. Feldens / Geological Society, London, Special Publications, 477, 151-167, 23 May 2018, https://doi.org/10.1144/SP477.36 --- Subsurface controls on the development of the Cape Fear Slide Complex, central US Atlantic Margin / Jenna C. Hill, Daniel S. Brothers, Matthew J. Hornbach, Derek E. Sawyer, Donna J. Shillington and Anne Bécel / Geological Society, London, Special Publications, 477, 169-181, 28 March 2018, https://doi.org/10.1144/SP477.17 --- Repeated large-scale mass-transport deposits and consequent rapid sedimentation in the western part of the Bay of Bengal, India / Yuzuru Yamamoto, Shun Chiyonobu, Toshiya Kanamatsu, Naokazu Ahagon, Kan Aoike, Nana Kamiya, Takanori Ojima, Takehiro Hirose, Takamitsu Sugihara, Saneatsu Saito, Masataka Kinoshita, Yusuke Kubo, Yasuhiro Yamada and NGHP-02 Scientists / Geological Society, London, Special Publications, 477, 183-193, 28 March 2018, https://doi.org/10.1144/SP477.12 --- Giant mass-transport deposits in the southern Scotia Sea (Antarctica) / Luis Somoza, Teresa Medialdea and Francisco J. González / Geological Society, London, Special Publications, 477, 195-205, 6 March 2018, https://doi.org/10.1144/SP477.2 --- Submarine landslides offshore Yamba, NSW, Australia: an analysis of their timing, downslope motion and possible causes / Thomas Hubble, Serena Yeung, Samantha Clarke, Alan Baxter and Fabio De Blasio / Geological Society, London, Special Publications, 477, 207-222, 30 April 2018, https://doi.org/10.1144/SP477.11 --- Mass transport deposits in modern and outcrop sedimentology --- Entrainment and abrasion of megaclasts during submarine landsliding and their impact on flow behaviour / D. M. Hodgson, H. L. Brooks, A. Ortiz-Karpf, Y. Spychala, D. R. Lee and C. A.-L. Jackson / Geological Society, London, Special Publications, 477, 223-240, 28 March 2018, https://doi.org/10.1144/SP477.26 --- Preferential formation of a slide plane in translational submarine landslide deposits in a Pleistocene forearc basin fill exposed in east-central Japan / Masayuki Utsunomiya, Atsushi Noda and Makoto Otsubo / Geological Society, London, Special Publications, 477, 241-253, 23 March 2018, https://doi.org/10.1144/SP477.3 --- Formation of excess fluid pressure, sediment fluidization and mass-transport deposits in the Plio-Pleistocene Boso forearc basin, central Japan / Nana Kamiya, Masayuki Utsunomiya, Yuzuru Yamamoto, Junichi Fukuoka, Feng Zhang and Weiren Lin / Geological Society, London, Special Publications, 477, 255-264, 26 March 2018, https://doi.org/10.1144/SP477.20 --- Stratal architecture and evolution of a slope mass-transport complex, Isaac Formation, Neoproterozoic Windermere Supergroup, southern Canadian Cordillera, British Columbia, Canada / Lilian Navarro and R. William C. Arnott / Geological Society, London, Special Publications, 477, 265-276, 3 May 2018, https://doi.org/10.1144/SP477.24 --- Tsunami risk assessment --- Extending the terrestrial depositional record of marine geohazards in coastal NW British Columbia / David Huntley, Peter Bobrowsky, James Goff, Catherine Chagué, Douglas Stead, Davide Donati and Danial Mariampillai / Geological Society, London, Special Publications, 477, 277-292, 27 March 2018, https://doi.org/10.1144/SP477.4 --- Tsunami modelling of the 7250 cal years BP Betsiamites submarine landslide / Dominique Turmel, Jacques Locat, Jonathan Leblanc and Geneviève Cauchon-Voyer / Geological Society, London, Special Publications, 477, 293-301, 6 March 2018, https://doi.org/10.1144/SP477.9 --- Bulgarian tsunami on 7 May 2007: numerical investigation of the hypothesis of a submarine-landslide origin / Oleg I. Gusev, Gayaz S. Khakimzyanov and Leonid B. Chubarov / Geological Society, London, Special Publications, 477, 303-313, 23 March 2018, https://doi.org/10.1144/SP477.6 --- Modelling the 1929 Grand Banks slump and landslide tsunami / Finn Løvholt, Irena Schulten, David Mosher, Carl Harbitz and Sebastian Krastel / Geological Society, London, Special Publications, 477, 315-331, 17 April 2018, https://doi.org/10.1144/SP477.28 --- Failure and post-failure analysis of submarine mass movements using geomorphology and geomechanical concepts / Jacques Locat / Geological Society, London, Special Publications, 477, 333-351, 30 April 2018, https://doi.org/10.1144/SP477.27 --- SPLASH: semi-empirical prediction of landslide-generated displacement wave run-up heights / Thierry Oppikofer, Reginald L. Hermanns, Nicholas J. Roberts and Martina Böhme / Geological Society, London, Special Publications, 477, 353-366, 17 March 2018, https://doi.org/10.1144/SP477.1 --- Assessments of subaqueous mass movements in labs, lakes, fjords and coastal areas --- Morphological characterization of submarine slope failures in a semi-enclosed fjord, Frobisher Bay, eastern Canadian Arctic / Robert Deering, Trevor Bell, Donald L. Forbes, Calvin Campbell and Evan Edinger / Geological Society, London, Special Publications, 477, 367-376, 24 May 2018, https://doi.org/10.1144/SP477.35 --- New evidence for a major late Quaternary submarine landslide on the external western levee of Laurentian Fan / Alexandre Normandeau, D. Calvin Campbell, David J. W. Piper and Kimberley A. Jenner / Geological Society, London, Special Publications, 477, 377-387, 28 March 2018, https://doi.org/10.1144/SP477.14 --- Failure dynamics of landslide scars on the lower continental slope of the Tyrrhenian Calabrian margin: insights from an integrated morpho-bathymetric and seismic analysis / Daniele Casalbore, Eleonora Martorelli, Alessandro Bosman, Eleonora Morelli and Francesco Latino Chiocci / Geological Society, London, Special Publications, 477, 389-397, 23 March 2018, https://doi.org/10.1144/SP477.16 --- Quantitative characterization of subaqueous landslides in Lake Zurich (Switzerland) based on a high-resolution bathymetric dataset / M. Strupler, F. S. Anselmetti, M. Hilbe and M. Strasser / Geological Society, London, Special Publications, 477, 399-412, 6 March 2018, https://doi.org/10.1144/SP477.7 --- Tsunami hazard from lacustrine mass wasting in Lake Tekapo, New Zealand / Joshu J. Mountjoy, Xiaoming Wang, Susi Woelz, Sean Fitzsimons, Jamie D. Howarth, Alan R. Orpin and William Power / Geological Society, London, Special Publications, 477, 413-426, 27 April 2018, https://doi.org/10.1144/SP477.21 --- Sediment mass movement of a particle-laden turbidity current based on ultrasound velocity profiling and the distribution of sediment concentration / Shun Nomura, Jumpei Hitomi, Giovanni De Cesare, Yasushi Takeda, Yuzuru Yamamoto and Hide Sakaguchi / Geological Society, London, Special Publications, 477, 427-437, 3 May 2018, https://doi.org/10.1144/SP477.19 --- A two-dimensional layer-averaged numerical model for turbidity currents / Shihao Yang, Yi An and Qingquan Liu / Geological Society, London, Special Publications, 477, 439-454, 23 May 2018, https://doi.org/10.1144/SP477.32 --- Policy, classification and providing advice for mitigation --- A consistent global approach for the morphometric characterization of subaqueous landslides / Michael Clare, Jason Chaytor, Oliver Dabson, Davide Gamboa, Aggeliki Georgiopoulou, Harry Eady, James Hunt, Christopher Jackson, Oded Katz, Sebastian Krastel, Ricardo León, Aaron Micallef, Jasper Moernaut, Roberto Moriconi, Lorena Moscardelli, Christof Mueller, Alexandre Normandeau, Marco Patacci, Michael Steventon, Morelia Urlaub, David Völker, Lesli Wood and Zane Jobe / Geological Society, London, Special Publications, 477, 455-477, 28 March 2018, https://doi.org/10.1144/SP477.15 --- Seismic and lithofacies characterization of a gravity core transect down the submarine Tuaheni Landslide Complex, NE New Zealand / Jannis Kuhlmann, Alan R. Orpin, Joshu J. Mountjoy, Gareth J. Crutchley, Stuart Henrys, Ryan Lunenburg and Katrin Huhn / Geological Society, London, Special Publications, 477, 479-495, 31 July 2018, https://doi.org/10.1144/SP477.37 --- Submarine landslide catalogue onshore/offshore harmonization: Spain as a case study / Ricardo León, Juan Carlos García-Davalillo, David Casas and Carmen Julia Giménez-Moreno / Geological Society, London, Special Publications, 477, 497-510, 31 July 2018, https://doi.org/10.1144/SP477.38 --- Combining in situ monitoring using seabed instruments and numerical modelling to assess the transient stability of underwater slopes / Morelia Urlaub and Heinrich Villinger / Geological Society, London, Special Publications, 477, 511-521, 6 March 2018, https://doi.org/10.1144/SP477.8 --- Effects of stress on failure behaviour of shallow-marine muds from the northern Gulf of Mexico / Brandon Dugan and Xin Zhao / Geological Society, London, Special Publications, 477, 523-536, 27 April 2018, https://doi.org/10.1144/SP477.13 --- Shear margin moraine, mass transport deposits and soft beds revealed by high-resolution P-Cable three-dimensional seismic data in the Hoop area, Barents Sea / Benjamin Bellwald and Sverre Planke / Geological Society, London, Special Publications, 477, 537-548, 28 March 2018, https://doi.org/10.1144/SP477.29 --- Geohazard assessment related to submarine instabilities in Bjørnafjorden, Norway / Brian Carlton, Maarten Vanneste, Carl Fredrik Forsberg, Siren Knudsen, Finn Løvholt, Tore Kvalstad, Søren Holm, Heidi Kjennbakken, Muhammad Adeel Mazhar, Samson Degago and Haflidi Haflidason / Geological Society, London, Special Publications, 477, 549-566, 31 July 2018, https://doi.org/10.1144/SP477.39 --- Providing multidisciplinary scientific advice for coastal planning in Kitimat Arm, British Columbia / Gwyn Lintern, Andrée Blais-Stevens, Cooper Stacey, John Shaw, Peter Bobrowsky, Kim Conway, David Huntley, Kevin Mackillop, Irina Overeem and Martin Scherwath / Geological Society, London, Special Publications, 477, 567-581, 16 April 2019, https://doi.org/10.1144/SP477.40 --- Surficial sediment failures due to the 1929 Grand Banks Earthquake, St Pierre Slope / Irena Schulten, David C. Mosher, Sebastian Krastel, David J. W. Piper and Markus Kienast / Geological Society, London, Special Publications, 477, 583-596, 3 May 2018, https://doi.org/10.1144/SP477.25
    Pages: Online-Ressource (IX, 609 Seiten) , Illustrationen, Diagramme
    ISBN: 9781786203823
    Language: English
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  • 2
    Publication Date: 2023-02-07
    Description: This dataset includes organic carbon measurements on sediment samples collected in Bute Inlet (British Columbia, Canada) in October 2016 (cruise number PGC2016007) and October 2017 (cruise number PGC2017005) aboard the research vessel CCGS Vector. The cruise PGC2016007 took place between 7 October and 17 October 2016 and was led by Gwyn Lintern. The cruise PGC2017005 took place between 19 and 29 October and was led by Cooper Stacey. River samples were taken in the Homathko and Southgate rivers using Niskin bottles in the water column and a grab sampler in the river beds and the river deltas
    Keywords: Age, 14C AMS; Age, dated; Bottle, Niskin; Bute Inlet, British Columbia, Canada; Carbon, organic, total; DEPTH, sediment/rock; DEPTH, water; Environment; Event label; fjords; Grab; GRAB; Latitude of event; Longitude of event; NIS; organic carbon (OC); Percentile 50; Percentile 90; PGC-2017-005; PGC-2017-005_RB16; PGC-2017-005_RB22; PGC-2017-005_RB24; PGC-2017-005_RBL18; PGC-2017-005_RD12; PGC-2017-005_RD14; PGC-2017-005_RD6; PGC-2017-005_RD8; PGC-2017-005_RP11; PGC-2017-005_RP13; PGC-2017-005_RP15; PGC-2017-005_RP16; PGC-2017-005_RP17; PGC-2017-005_RP19; PGC-2017-005_RP7; PGC-2017-005_RP9; PGC-2017-005_RW23; PGC-2017-005_SS18; PGC-2017-005_SS20; River; sediment; submarine canyon; Vector; δ13C, organic carbon
    Type: Dataset
    Format: text/tab-separated-values, 118 data points
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  • 3
    Publication Date: 2023-02-07
    Description: This dataset includes organic carbon measurements on sediment samples collected in Bute Inlet (British Columbia, Canada) in October 2016 (cruise number PGC2016007) and October 2017 (cruise number PGC2017005) aboard the research vessel CCGS Vector. The cruise PGC2016007 took place between 7 October and 17 October 2016 and was led by Gwyn Lintern. The cruise PGC2017005 took place between 19 and 29 October and was led by Cooper Stacey. Marine sediment samples were collected in Bute Inlet using a box corer for the sandy samples in the submarine channel and a piston corer for the muddy samples in the overbanks and distal basin.
    Keywords: 1; 10; 11; 12; 13; 14; 15; 2; 3; 4; 5; 6; 7; 8; 9; Age, 14C AMS; Age, dated; BC; Box corer; Bute Inlet, British Columbia, Canada; Carbon, organic, total; Core; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Elevation of event; Event label; fjords; Latitude of event; Longitude of event; Method/Device of event; organic carbon (OC); PC; Percentile 50; Percentile 90; PGC-2016-003; PGC-2016-003_STN01; PGC-2016-007; PGC-2016-007_STN010; PGC-2016-007_STN014; PGC-2016-007_STN015; PGC-2016-007_STN019; PGC-2016-007_STN020; PGC-2016-007_STN021; PGC-2016-007_STN025; PGC-2016-007_STN026; PGC-2016-007_STN028; PGC-2016-007_STN029; PGC-2016-007_STN030; PGC-2016-007_STN031; PGC-2016-007_STN032; PGC-2016-007_STN036; PGC-2016-007_STN09; Piston corer; sediment; Sub-Environment; submarine canyon; Vector; δ13C, organic carbon
    Type: Dataset
    Format: text/tab-separated-values, 516 data points
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  • 4
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    Hage, S., Galy, V. V., Cartigny, M. J. B., Acikalin, S., Clare, M. A., Grocke, D. R., Hilton, R. G., Hunt, J. E., Lintern, D. G., McGhee, C. A., Parsons, D. R., Stacey, C. D., Sumner, E. J., & Talling, P. J. (2020). Efficient preservation of young terrestrial organic carbon in sandy turbidity-current deposits. Geology, 48(9), 882-887.
    Publication Date: 2022-10-05
    Description: © The Author(s), 2020. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Hage, S., Galy, V. V., Cartigny, M. J. B., Acikalin, S., Clare, M. A., Grocke, D. R., Hilton, R. G., Hunt, J. E., Lintern, D. G., McGhee, C. A., Parsons, D. R., Stacey, C. D., Sumner, E. J., & Talling, P. J. Efficient preservation of young terrestrial organic carbon in sandy turbidity-current deposits. Geology, 48(9), (2020): 882-887, doi:10.1130/G47320.1.
    Description: Burial of terrestrial biospheric particulate organic carbon in marine sediments removes CO2 from the atmosphere, regulating climate over geologic time scales. Rivers deliver terrestrial organic carbon to the sea, while turbidity currents transport river sediment further offshore. Previous studies have suggested that most organic carbon resides in muddy marine sediment. However, turbidity currents can carry a significant component of coarser sediment, which is commonly assumed to be organic carbon poor. Here, using data from a Canadian fjord, we show that young woody debris can be rapidly buried in sandy layers of turbidity current deposits (turbidites). These layers have organic carbon contents 10× higher than the overlying mud layer, and overall, woody debris makes up 〉70% of the organic carbon preserved in the deposits. Burial of woody debris in sands overlain by mud caps reduces their exposure to oxygen, increasing organic carbon burial efficiency. Sandy turbidity current channels are common in fjords and the deep sea; hence we suggest that previous global organic carbon burial budgets may have been underestimated.
    Description: We thank C. Johnson, M. Lardie, A. Gagnon, A. McNichol, and the NOSAMS (National Ocean Sciences Accelerator Mass Spectrometry) team (Woods Hole Oceanographic Institution [WHOI], Massachusetts, USA) for their help with ramped oxidation system and isotopes. We thank the captain and crew of CCGS Vector. Support was provided by UK Natural Environment Research Council (NERC) grants NE/M007138/1 (to Cartigny) and NE/L013142/1 (to Talling), NE/P005780/1 and NE/P009190/1 (to Clare); a Royal Society Research Fellowship (to Cartigny); an International Association of Sedimentologists Postgraduate Grant and National Oceanography Centre Southampton–WHOI exchange program funds (to Hage); an independent study award from WHOI (to Galy); the Climate Linked Atlantic Sector Science (CLASS) program (NERC grant NE/R015953/1); and the European Research Council under the European Union’s Horizon 2020 research and innovation program (Grant 725955, to Parsons). We thank François Baudin, Xingqian Cui, editor James Schmitt, and three anonymous reviewers.
    Repository Name: Woods Hole Open Access Server
    Type: Article
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  • 5
    Publication Date: 2022-10-26
    Description: © The Author(s), 2022. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Hage, S., Galy, V., Cartigny, M., Heerema, C., Heijnen, M., Acikalin, S., Clare, M., Giesbrecht, I., Gröcke, D., Hendry, A., Hilton, R., Hubbard, S., Hunt, J., Lintern, D., McGhee, C., Parsons, D., Pope, E., Stacey, C., Sumner, E., Tank, S., & Talling, P. Turbidity currents can dictate organic carbon fluxes across river‐fed fjords: an example from Bute Inlet (BC, Canada). Journal of Geophysical Research: Biogeosciences, 127(6), (2022): e2022JG006824, https://doi.org/10.1029/2022jg006824.
    Description: The delivery and burial of terrestrial particulate organic carbon (OC) in marine sediments is important to quantify, because this OC is a food resource for benthic communities, and if buried it may lower the concentrations of atmospheric CO2 over geologic timescales. Analysis of sediment cores has previously shown that fjords are hotspots for OC burial. Fjords can contain complex networks of submarine channels formed by seafloor sediment flows, called turbidity currents. However, the burial efficiency and distribution of OC by turbidity currents in river-fed fjords had not been investigated previously. Here, we determine OC distribution and burial efficiency across a turbidity current system within Bute Inlet, a fjord in western Canada. We show that 62% ± 10% of the OC supplied by the two river sources is buried across the fjord surficial (30–200 cm) sediment. The sandy subenvironments (channel and lobe) contain 63% ± 14% of the annual terrestrial OC burial in the fjord. In contrast, the muddy subenvironments (overbank and distal basin) contain the remaining 37% ± 14%. OC in the channel, lobe, and overbank exclusively comprises terrestrial OC sourced from rivers. When normalized by the fjord’s surface area, at least 3 times more terrestrial OC is buried in Bute Inlet, compared to the muddy parts of other fjords previously studied. Although the long-term (〉100 years) preservation of this OC is still to be fully understood, turbidity currents in fjords appear to be efficient at storing OC supplied by rivers in their near-surface deposits.
    Description: S.H. acknowledges funding by the IAS postgraduate grant scheme, a Research Development funds offered by Durham University, and the NOCS/WHOI exchange program. S.H. has received funding from the European Union’s Horizon 2020 research and innovation program under the Marie Sklodowska-Curie grant agreement no. 899546. The field campaign and geochemical analyses were supported by Natural Environment Research Council grants NE/M007138/1, NE/W30601/1, NE/N012798/1, NE/K011480/1 and NE/M017540/1. M.J.B.C. was funded by a Royal Society Research Fellowship (DHF\R1\180166). M.A.C. was supported by the U.K. National Capability NERC CLASS program (NE/R015953/1) and NERC grants (NE/P009190/1 and NE/P005780/1). C.J.H. and M.S.H. were funded by the European Union’s Horizon 2020 research and innovation program under the Marie Skłodowska-Curie grant agreement no. 721403 - ITN SLATE. E.L.P. was supported by a Leverhulme Early Career Fellowship (ECF-2018-267).
    Keywords: Fjords ; Organic carbon ; Sediment ; Submarine channel ; Carbon burial ; Rivers
    Repository Name: Woods Hole Open Access Server
    Type: Article
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  • 6
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    Publication Date: 2020-06-19
    Description: Submarine channels are the primary conduits for terrestrial sediment, organic carbon, and pollutant transport to the deep sea. Submarine channels are far more difficult to monitor than rivers, and thus less well understood. Here we present 9 years of time-lapse mapping of an active submarine channel along its full length in Bute Inlet, Canada. Past studies suggested that meander-bend migration, levee-deposition, or migration of (supercritical-flow) bedforms controls the evolution of submarine channels. We show for the first time how rapid (100–450 m/year) upstream migration of 5-to-30 m high knickpoints can control submarine channel evolution. Knickpoint migration-related changes include deep (〉25 m) erosion, and lateral migration of the channel. Knickpoints in rivers are created by external factors, such as tectonics, or base-level change. However, the knickpoints in Bute Inlet appear internally generated. Similar knickpoints are found in several submarine channels worldwide, and are thus globally important for how channels operate.
    Electronic ISSN: 2041-1723
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General , Physics
    Published by Springer Nature
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    Publication Date: 2018-07-01
    Print ISSN: 0037-0738
    Electronic ISSN: 1879-0968
    Topics: Geosciences
    Published by Elsevier
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