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. Cyhoeddwyd

    When is a clay-laden current turbulent, transitional or laminar? A new stability diagram based on flow dynamics and clay concentration.

    Baas, J. H., Best, J. L., Peakall, J. & Wang, M., 1 Ion 2005.

    Allbwn ymchwil: Cyfraniad at gynhadleddPapur

  2. Cyhoeddwyd

    Wave ripples in mixtures of cohesive clay and cohesionless sand: Preliminary results

    Baas, J. H., Westlake, A., Eggenhuisen, J., Amoudry, L., Cartigny, M., Coultish, N., McLelland, S., Mouazé, D., Murphy, B., Parsons, D., Rosewell, K., Ruessink, G., Schrijvershof, R., Wu, X. & Ye, L., 1 Gorff 2014.

    Allbwn ymchwil: Cyfraniad at gynhadleddPapur

  3. Cyhoeddwyd

    Wave ripple development on mixed clay–sand substrates: Effects of clay winnowing and armoring

    Wu, X., Baas, J. H., Parsons, D. R., Eggenhuisen, J., Amoudry, L., Cartigny, M., McLelland, S., Mouazé, D. & Ruessink, G., Tach 2018, Yn: Journal of Geophysical Research: Earth Surface. 123, 11, t. 2784-2801 35 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  4. Cyhoeddwyd

    Visualizing the flow fields of sediment-laden density currents.

    Peakall, J., Best, J. L., Baas, J. H. & Al-Musallami, Z., 1 Ion 2000.

    Allbwn ymchwil: Cyfraniad at gynhadleddPapur

  5. Cyhoeddwyd

    Turbulence-modulated clay-laden flow over flat beds, ripple and dunes.

    Baas, J. H. & Best, J. L., 1 Ion 2005.

    Allbwn ymchwil: Cyfraniad at gynhadleddPapur

  6. Cyhoeddwyd

    Turbulence modulation in high-concentration clay-rich flows and the possible origin of “massive” sand beds.

    Baas, J. H. & Best, J. L., 1 Ion 2000, t. 6-7.

    Allbwn ymchwil: Cyfraniad at gynhadleddPapur

  7. Cyhoeddwyd

    Turbulence modulation in clay-rich sediment-laden flows and some implications for sediment deposition.

    Baas, J. H. & Best, J. L., 1 Ion 2002, Yn: Journal of Sedimentary Research. 72, 3, t. 336-340

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  8. Cyhoeddwyd

    Turbulence modulation in clay-rich flows: Implications for depositional process and bed form geometry.

    Baas, J. H. & Best, J. L., 1 Ion 2005.

    Allbwn ymchwil: Cyfraniad at gynhadleddPapur

  9. Cyhoeddwyd

    Turbulence modulation in clay-laden flows over ripples and dunes.

    Baas, J. H. & Best, J. L., 1 Ion 2005.

    Allbwn ymchwil: Cyfraniad at gynhadleddPapur

  10. Cyhoeddwyd

    Turbulence modulation behind ripples and dunes in clay-laden currents.

    Baas, J. H. & Best, J. L., 1 Ion 2004.

    Allbwn ymchwil: Cyfraniad at gynhadleddPapur

  11. Cyhoeddwyd

    Thresholds of intrabed flow and other interactions of turbidity currents with soft muddy substrates

    Baas, J., Manica, R., Puhl, E. & Borges, A. L. D. O., 1 Rhag 2016, Yn: Sedimentology. 63, 7, t. 2002-2036

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  12. Cyhoeddwyd

    The role of biophysical cohesion on subaqueous bed form size

    Parsons, D. R., Schindler, R. J., Hope, J. A., Malarkey, J., Baas, J. H., Peakall, J., Manning, A. L., Ye, L., Simmons, S., Paterson, D. M., Aspden, R. J., Bass, S. J., Davies, A. G., Lichtman, I. D. & Thorne, P. D., 28 Ion 2016, Yn: Geophysical Research Letters. 43, t. 1566-1573

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  13. Cyhoeddwyd
  14. Cyhoeddwyd

    The pervasive role of biological cohesion in bedform development

    Malarkey, J., Baas, J. H., Hope, J. A., Aspenden, R. J., Parsons, D. R., Peakall, J., Peterson, D. M., Schindler, R. J., Ye, L., Lichtman, I. D., Bass, S. J., Davies, A. G., Manning, A. J. & Thorne, P. D., 6 Chwef 2015, Yn: Nature Communications. 6, 6257

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  15. Cyhoeddwyd

    The hiding-exposure effect revisited: A method to calculate the mobility of bimodal sediment mixtures

    McCarron, C. J., Van Landeghem, K. J. J., Baas, J. H., Amoudry, L. O. & Malarkey, J., Ebr 2019, Yn: Marine Geology. 410, t. 22-31

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  16. Cyhoeddwyd

    The dynamics of turbulent, transitional and laminar clay-laden flow over a fixed current ripple.

    Baas, J. H. & Best, J. L., 1 Meh 2008, Yn: Sedimentology. 55, 3, t. 635-66

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  17. Cyhoeddwyd

    The Effect of Clay Type on the Properties of Cohesive Sediment Gravity Flows and their Deposits

    Baker, M. L., Baas, J. H., Malarkey, J., Silva Jacinto, R., Craig, M. J., Kane, I. A. & Barker, S., 2017, Yn: Journal of Sedimentary Research. 87, 11, t. 1176-1195 59 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  18. Cyhoeddwyd

    The Deep-Water Architecture Knowledge Base: Towards objective comparison of deep-marine sedimentary systems.

    Baas, J. H., McCaffrey, W. D. & Knipe, R. J., 1 Tach 2005, Yn: Petroleum Geoscience. 11, 4, t. 309-320

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  19. Cyhoeddwyd

    The Deep-Water Architecture Knowledge Base: Towards objective comparison of deep-marine sedimentary systems.

    Baas, J. H. & McCaffrey, W. D., 1 Ion 2006.

    Allbwn ymchwil: Cyfraniad at gynhadleddPapur

  20. Cyhoeddwyd
  21. Cyhoeddwyd

    Temporal flow structure of an experimental particulate density current linked to textural variation of the resultant flume deposit.

    Barker, S., McCaffrey, B., Haughton, P., Baas, J. H. & Choux, C., 1 Ion 2004.

    Allbwn ymchwil: Cyfraniad at gynhadleddPapur

  22. Cyhoeddwyd

    TDURE : A mathematical model for the duration of deposition from decelerating high-density turbidity currents.

    Baas, J. H., Van Dam, R. L. & Storms, J. E., 1 Ion 2000, t. 74-75.

    Allbwn ymchwil: Cyfraniad at gynhadleddPapur

  23. Cyhoeddwyd

    Suspended and bedload dynamics in a tidally influenced river: the river Dyfi, Wales, UK.

    Brewer, P., Vericat, D., Baas, J. H., Jago, C. F., Brasington, J., Wheaton, J. M. & Causer, F., 1 Ion 2007.

    Allbwn ymchwil: Cyfraniad at gynhadleddPapur

  24. Cyhoeddwyd

    Submarine Mass Movements and their Consequences, by J. Locat, & J. Mienert

    Baas, J. H. & Strachan, L., 1 Mai 2005, Unknown.

    Allbwn ymchwil: Cyfraniad arallCyfraniad Arall

  25. 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

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