Dr Jaco Baas

Uwch Ddarlithydd

Contact info

Position: Reader

Room: 305 Craig Mair

Phone: 01248 382894

E-mail: j.baas@bangor.ac.uk

Web: Google Scholar, ResearchGate

I am Reader in Fine Particle Dynamics in the School of Ocean Sciences, and specialise in the erosion, transport, and deposition of fine, cohesive sediment. I graduated from the University of Utrecht (the Netherlands) with a combined BSc/MSc in Sedimentary Geology in 1988. At the same university, I completed my PhD in Bedform Dynamics in 1993. Subsequently, I was Postdoctoral Research Fellow at Geomar Research Centre in Kiel, Germany (studying Late-Pleistocene climate signals in slope sediments from the North-Atlantic continental margin), at the University of Rouen, France (on resuspension processes in the Seine estuary and gravel mining in the English Channel), and at the University of Bergen, Norway (investigating grain orientations in turbidite deposits).

In 1998, I moved to the School of Earth and Environment at the University of Leeds, where I started as a Marie Curie Research Fellow and then became a Senior Research Fellow. My research in Leeds included the physical properties of particulate density currents and their deposits and the dynamics of turbulence-modulated flows carrying cohesive clay particles. I took up my present post in Bangor in January 2007.

I am a process sedimentologist with more than 25 years of experience in sediment transport in fluvial, shallow marine, and deep-marine environments. My main fundamental and applied research interests include physical and biological cohesion in fine-grained sediment, the dynamics of sedimentary bedforms, and sediment gravity flows in the deep ocean, but my expertise also stretches to hydraulic engineering, palaeoclimatology, and mathematical modelling. I combine experimental research with field work to answer timely research questions, taking a blue-skies approach as well as collaborating with industry.

Research Area

Sediment Dynamics and Morphology

  1. 2023
  2. Cyhoeddwyd

    Streamwise turbulence modulation in non-uniform open-channel clay suspension flows

    de Vet, M. G. W., Fernandez, R., Baas, J. H., McCaffrey, W. D. & Dorrell, R. M., Awst 2023, Yn: Journal of Geophysical Research: Earth Surface. 128, 8, e2022JF006781.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  3. 2024
  4. Cyhoeddwyd

    Influence of cohesive clay on wave–current ripple dynamics captured in a 3D phase diagram

    Xuxu, W., Malarkey, J., Fernández, R., Baas, J., Pollard, E. & Parsons, D., 30 Ion 2024, Yn: Earth Surface Dynamics. 12, t. 231-247

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  5. Cyhoeddwyd

    On the origin of chevron marks and striated grooves, and their use in predicting mud bed rheology

    McGowan, D., Salian, A., Baas, J., Peakall, J. & Best, J., Chwef 2024, Sedimentology, 71, 2, t. 687-708 22 t.

    Allbwn ymchwil: Cyfraniad at gyhoeddiad arbenigolErthygl

  6. Cyhoeddwyd

    Marine redox dynamics and biotic response to the mid-Silurian Ireviken Extinction Event in a mid-shelf setting

    Wang, Y., Wignall, P. B., Xiong, Y., Loydell, D. K., Peakall, J., Baas, J. H., Mills, B. J. W. & Poulton, S. W., 10 Mai 2024, Yn: Journal of the Geological Society. 181, 4, jgs2023-155.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  7. Cyhoeddwyd

    Fine sediment in mixed sand-silt environments impact bedform geometry by altering sediment mobility

    de Lange, S. L., Niesten, I., van de Veen, S. H. J., Baas, J., Lammers, J., Waldschlaeger, K., Boelee, D. & Hoitink, A. J. F., Gorff 2024, Yn: Water Resources Research. 60, 7, e2024WR037065.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  8. Wedi ei Dderbyn / Yn y wasg

    Using mixed-clay sediment gravity flow rheology as an indicator for flow velocity and run-out distance

    Baker, M., Baas, J., Malarkey, J. & Silva Jacinto, R., 10 Gorff 2024, (Wedi ei Dderbyn / Yn y wasg) Particulate Gravity Currents in the Environment. American Geophysical Union

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion CynhadleddPennodadolygiad gan gymheiriaid

  9. Cyhoeddwyd

    Preservation of groove mark striae formed by armoured mud clasts: the role of armour sediment size and bed yield stress

    Lock, C., Reid, M., Baas, J. & Peakall, J., Medi 2024, Yn: The Depositional Record. 10, 4, t. 426-440

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  10. E-gyhoeddi cyn argraffu

    Integrating transitional-flow signatures into hybrid event beds: Implications for hybrid flow evolution on a submarine lobe fringe

    Łapcik, P. & Baas, J., 4 Medi 2024, (E-gyhoeddi cyn argraffu) Yn: Journal of Sedimentary Research.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  11. Cyhoeddwyd

    Flow-induced Interfacial Deformation Structures (FIDS): Implications for the interpretation of palaeocurrents, flow dynamics and substrate rheology

    Peakall, J., Best, J., Baas, J., Wignall, P. B., Hodgson, D. M. & Łapcik, P., Hyd 2024, Yn: Sedimentology. 71, 6, t. 1709-1743

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  12. E-gyhoeddi cyn argraffu

    Coming to light: How effective are sediment gravity flows in removing fine suspended carbonate from reefs?

    Baas, J., Hewitt, W., Lokier, S. & Hendry, J., 27 Tach 2024, (E-gyhoeddi cyn argraffu) Yn: The Depositional Record.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  13. Cyhoeddwyd

    Effect of Bed Clay on Surface Water-Wave Reconstruction from Ripples

    Malarkey, J., Pollard, E., Fernández, R., Xuxu, W., Baas, J. & Parsons, D., 28 Rhag 2024, Yn: Scientific Reports. 14, 1, t. 30688 30688.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  14. 2025
  15. Cyhoeddwyd

    Distinguishing microbially induced sedimentary structures from fluid-induced interfacial deformation structures (MISS versus FIDS)

    Wignall, P. B., Peakall, J., Best, J. & Baas, J., 7 Maw 2025, Yn: The Geological Society Special Publications. 556, 1

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  16. Wedi ei Dderbyn / Yn y wasg

    Softgrounds: Substrates controlled by sediment gravity flows and the evolution of deep-water trace fossils

    Wang, Y., Wignall, P. B., Peakall, J., Baas, J. & Poulton, S. W., 10 Maw 2025, (Wedi ei Dderbyn / Yn y wasg) Yn: The Geological Society Special Publications.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

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