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Dr Megan Baker's Outputs (16)

Seabed Seismographs Reveal Duration and Structure of Longest Runout Sediment Flows on Earth (2024)
Journal Article
Baker, M. L., Talling, P. J., Burnett, R., Pope, E. L., Ruffell, S. C., Urlaub, M., Clare, M. A., Jenkins, J., Dietze, M., Neasham, J., Silva Jacinto, R., Hage, S., Hasenhündl, M., Simmons, S. M., Heerema, C. J., Heijnen, M. S., Kunath, P., Cartigny, M. J. B., McGhee, C., & Parsons, D. R. (2024). Seabed Seismographs Reveal Duration and Structure of Longest Runout Sediment Flows on Earth. Geophysical Research Letters, 51(23), Article e2024GL111078. https://doi.org/10.1029/2024gl111078

Turbidity currents carve the deepest canyons on Earth, deposit its largest sediment accumulations, and break seabed telecommunication cables. Powerful canyon‐flushing turbidity currents break sensors placed in their path, making them notoriously chal... Read More about Seabed Seismographs Reveal Duration and Structure of Longest Runout Sediment Flows on Earth.

How is particulate organic carbon transported through the river-fed submarine Congo Canyon to the deep sea? (2024)
Journal Article
Hage, S., Baker, M. L., Babonneau, N., Soulet, G., Dennielou, B., Silva Jacinto, R., Hilton, R. G., Galy, V., Baudin, F., Rabouille, C., Vic, C., Sahin, S., Açikalin, S., & Talling, P. J. (2024). How is particulate organic carbon transported through the river-fed submarine Congo Canyon to the deep sea?. Biogeosciences, 21(19), 4251-4272. https://doi.org/10.5194/bg-21-4251-2024

The transfer of carbon from land to the near-coastal ocean is increasingly being recognized in global carbon budgets. However, a more direct transfer of terrestrial organic carbon to the deep sea is comparatively overlooked. Among systems that connec... Read More about How is particulate organic carbon transported through the river-fed submarine Congo Canyon to the deep sea?.

Time-lapse surveys reveal patterns and processes of erosion by exceptionally powerful turbidity currents that flush submarine canyons: A case study of the Congo Canyon (2024)
Journal Article
Ruffell, S. C., Talling, P. J., Baker, M. L., Pope, E. L., Heijnen, M. S., Jacinto, R. S., Cartigny, M. J., Simmons, S. M., Clare, M. A., Heerema, C. J., McGhee, C., Hage, S., Hasenhündl, M., & Parsons, D. R. (2024). Time-lapse surveys reveal patterns and processes of erosion by exceptionally powerful turbidity currents that flush submarine canyons: A case study of the Congo Canyon. Geomorphology, 463, Article 109350. https://doi.org/10.1016/j.geomorph.2024.109350

The largest canyons on Earth occur on the seafloor, and seabed sediment flows called turbidity currents play a key role in carving these submarine canyons. However, the processes by which turbidity currents erode submarine canyons are very poorly doc... Read More about Time-lapse surveys reveal patterns and processes of erosion by exceptionally powerful turbidity currents that flush submarine canyons: A case study of the Congo Canyon.

Globally significant mass of terrestrial organic carbon efficiently transported by canyon-flushing turbidity currents (2024)
Journal Article
Baker, M. L., Hage, S., Talling, P. J., Acikalin, S., Hilton, R. G., Haghipour, N., Ruffell, S. C., Pope, E. L., Jacinto, R. S., Clare, M. A., & Sahin, S. (2024). Globally significant mass of terrestrial organic carbon efficiently transported by canyon-flushing turbidity currents. Geology, 52(8), 631-636. https://doi.org/10.1130/g51976.1

Burial of organic carbon in marine sediments is a long-term sink of atmospheric CO2, and submarine turbidity currents are volumetrically the most important sediment transport process on Earth. Yet the processes, amounts, and efficiency of organic car... Read More about Globally significant mass of terrestrial organic carbon efficiently transported by canyon-flushing turbidity currents.

Morphometric fingerprints and downslope evolution in bathymetric surveys: insights into morphodynamics of the Congo canyon-channel (2024)
Journal Article
Hasenhündl, M., Talling, P. J., Pope, E. L., Baker, M. L., Heijnen, M. S., Ruffell, S. C., …Cartigny, M. J. B. (2024). Morphometric fingerprints and downslope evolution in bathymetric surveys: insights into morphodynamics of the Congo canyon-channel. Frontiers in Earth Science, 12, Article 1381019. https://doi.org/10.3389/feart.2024.1381019

Submarine canyons and channels are globally important pathways for sediment, organic carbon, nutrients and pollutants to the deep sea, and they form the largest sediment accumulations on Earth. However, studying these remote submarine systems compreh... Read More about Morphometric fingerprints and downslope evolution in bathymetric surveys: insights into morphodynamics of the Congo canyon-channel.

Seismic and Acoustic Monitoring of Submarine Landslides: Ongoing Challenges, Recent Successes, and Future Opportunities (2023)
Book Chapter
Clare, M. A., Lintern, G., Pope, E., Baker, M., Ruffell, S., Zulkifli, M. Z., …Talling, P. J. (2024). Seismic and Acoustic Monitoring of Submarine Landslides: Ongoing Challenges, Recent Successes, and Future Opportunities. In G. Bayrakci, & F. Klingelhoefer (Eds.), Noisy Oceans: Monitoring Seismic and Acoustic Signals in the Marine Environment (59-82). Wiley. https://doi.org/10.1002/9781119750925.ch5

Submarine landslides pose a hazard to coastal communities and critical seafloor infrastructure, occurring on all of the world's continental margins, from coastal zones to hadal trenches. Offshore monitoring has been limited by the largely unpredictab... Read More about Seismic and Acoustic Monitoring of Submarine Landslides: Ongoing Challenges, Recent Successes, and Future Opportunities.

The Global Turbidity Current Pump and Its Implications for Organic Carbon Cycling (2023)
Journal Article
Talling, P. J., Hage, S., Baker, M. L., Bianchi, T. S., Hilton, R. G., & Maier, K. L. (2024). The Global Turbidity Current Pump and Its Implications for Organic Carbon Cycling. Annual Review of Marine Science, 16(1), https://doi.org/10.1146/annurev-marine-032223-103626

Submarine turbidity currents form the largest sediment accumulations on Earth, raising the question of their role in global carbon cycles. It was previously inferred that terrestrial organic carbon was primarily incinerated on shelves and that most t... Read More about The Global Turbidity Current Pump and Its Implications for Organic Carbon Cycling.

Carbon and sediment fluxes inhibited in the submarine Congo Canyon by landslide-damming (2022)
Journal Article
Pope, E. L., Heijnen, M. S., Talling, P. J., Jacinto, R. S., Gaillot, A., Baker, M. L., Hage, S., Hasenhündl, M., Heerema, C. J., McGhee, C., Ruffell, S. C., Simmons, S. M., Cartigny, M. J., Clare, M. A., Dennielou, B., Parsons, D. R., Peirce, C., & Urlaub, M. (2022). Carbon and sediment fluxes inhibited in the submarine Congo Canyon by landslide-damming. Nature Geoscience, 15(10), 845-853. https://doi.org/10.1038/s41561-022-01017-x

Landslide-dams, which are often transient, can strongly affect the geomorphology, and sediment and geochemical fluxes, within subaerial fluvial systems. The potential occurrence and impact of analogous landslide-dams in submarine canyons has, however... Read More about Carbon and sediment fluxes inhibited in the submarine Congo Canyon by landslide-damming.

Longest sediment flows yet measured show how major rivers connect efficiently to deep sea (2022)
Journal Article
Talling, P. J., Baker, M. L., Pope, E. L., Ruffell, S. C., Jacinto, R. S., Heijnen, M. S., Hage, S., Simmons, S. M., Hasenhündl, M., Heerema, C. J., McGhee, C., Apprioual, R., Ferrant, A., Cartigny, M. J., Parsons, D. R., Clare, M. A., Tshimanga, R. M., Trigg, M. A., Cula, C. A., Faria, R., …Hilton, R. J. (2022). Longest sediment flows yet measured show how major rivers connect efficiently to deep sea. Nature Communications, 13(1), https://doi.org/10.1038/s41467-022-31689-3

Here we show how major rivers can efficiently connect to the deep-sea, by analysing the longest runout sediment flows (of any type) yet measured in action on Earth. These seafloor turbidity currents originated from the Congo River-mouth, with one flo... Read More about Longest sediment flows yet measured show how major rivers connect efficiently to deep sea.

Does sand promote or hinder the mobility of cohesive sediment gravity flows? (2022)
Journal Article
Baker, M. L., & Baas, J. H. (2023). Does sand promote or hinder the mobility of cohesive sediment gravity flows?. Sedimentology, 70(4), 1110-1130. https://doi.org/10.1111/sed.13072

Sediment gravity flows exhibit a large range of flow behaviours, making their flow dynamics hard to predict and the resulting deposits a challenge to interpret. Cohesive sediment gravity flows containing clay are particularly complex, as their behavi... Read More about Does sand promote or hinder the mobility of cohesive sediment gravity flows?.

Blood, lead and spheres: A hindered settling equation for sedimentologists based on metadata analysis (2022)
Journal Article
Baas, J. H., Baker, M. L., Buffon, P., Strachan, L. J., Bostock, H., Hodgson, D., Eggenhuisen, J. T., & Spychala, Y. T. (2022). Blood, lead and spheres: A hindered settling equation for sedimentologists based on metadata analysis. Depositional Record, 8(2), 603-615. https://doi.org/10.1002/dep2.176

A revision of the popular equation of Richardson and Zaki (1954a, Transactions of the Institute of Chemical Engineering, 32, 35–53) for the hindered settling of suspensions of non-cohesive particles in fluids is proposed, based on 548 data sets from... Read More about Blood, lead and spheres: A hindered settling equation for sedimentologists based on metadata analysis.

Mixed sand–mud bedforms produced by transient turbulent flows in the fringe of submarine fans: Indicators of flow transformation (2020)
Journal Article
Baker, M. L., & Baas, J. H. (2020). Mixed sand–mud bedforms produced by transient turbulent flows in the fringe of submarine fans: Indicators of flow transformation. Sedimentology, 67(5), 2645-2671. https://doi.org/10.1111/sed.12714

The fringe of fine‐grained deep‐marine systems often exhibits complex sedimentary facies and facies associations, because the presence of clay promotes the development of transient turbulent flows with complex depositional properties. Relatively litt... Read More about Mixed sand–mud bedforms produced by transient turbulent flows in the fringe of submarine fans: Indicators of flow transformation.

Integrating field and laboratory approaches for ripple development in mixed sand–clay–EPS (2019)
Journal Article
Baas, J. H., Baker, M. L., Malarkey, J., Bass, S. J., Manning, A. J., Hope, J. A., Peakall, J., Lichtman, I. D., Ye, L., Davies, A. G., Parsons, D. R., Paterson, D. M., & Thorne, P. D. (2019). Integrating field and laboratory approaches for ripple development in mixed sand–clay–EPS. Sedimentology, 66(7), 2749-2768. https://doi.org/10.1111/sed.12611

The shape and size of sedimentary bedforms play a key role in the reconstruction of sedimentary processes in modern and ancient environments. Recent laboratory experiments have shown that bedforms in mixed sand–clay develop at a slower rate and often... Read More about Integrating field and laboratory approaches for ripple development in mixed sand–clay–EPS.

Biomediation of submarine sediment gravity flow dynamics (2019)
Journal Article
Craig, M. J., Baas, J. H., Amos, K. J., Strachan, L. J., Manning, A. J., Paterson, D. M., Hope, J. A., Nodder, S. D., & Baker, M. L. (2020). Biomediation of submarine sediment gravity flow dynamics. Geology, 48(1), 72-76. https://doi.org/10.1130/g46837.1

Sediment gravity flows are the primary process by which sediment and organic carbon are transported from the continental margin to the deep ocean. Up to 40% of the total marine organic carbon pool is represented by cohesive extracellular polymeric su... Read More about Biomediation of submarine sediment gravity flow dynamics.

The Effect of Clay Type On the Properties of Cohesive Sediment Gravity Flows and Their Deposits (2017)
Journal Article
Baker, M. L., Baas, J. H., Malarkey, J., Jacinto, R. S., Craig, M. J., Kane, I. A., & Barker, S. (2017). The Effect of Clay Type On the Properties of Cohesive Sediment Gravity Flows and Their Deposits. Journal of Sedimentary Research, 87(11), https://doi.org/10.2110/jsr.2017.63

The present knowledge of cohesive clay-laden sediment gravity flows (SGFs) and their deposits is limited, despite clay being one of the most abundant sediment types on earth and subaqueous SGFs transporting large volumes of sediment into the ocean. L... Read More about The Effect of Clay Type On the Properties of Cohesive Sediment Gravity Flows and Their Deposits.