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
  2. Cyhoeddwyd

    A phase diagram for turbulent, transitional and laminar clay suspension flows.

    Baas, J. H., Best, J. L., Peakall, J. & Wang, M., 1 Maw 2009, Yn: Journal of Sedimentary Research. 79, 3-4, t. 162-183

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  3. Cyhoeddwyd

    An experimental model for turbulence modulation in natural clay-laden flows over flat beds, ripples and dunes.

    Baas, J. H., Best, J. L. & Kellman, P., 1 Ion 2006.

    Allbwn ymchwil: Cyfraniad at gynhadleddPapur

  4. Cyhoeddwyd

    An integrated process-based model of flutes and tool marks in deep-water environments: implications for palaeohydraulics, the Bouma sequence, and hybrid event beds

    Peakall, J., Best, J., Baas, J. H., Hodgson, D. M., Clare, M. A., Talling, P. J., Dorrell, R. M. & Lee, D. R., Meh 2020, Yn: Sedimentology. 67, 4, t. 1601-1666 66 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  5. Cyhoeddwyd

    Bedform development below transient turbulent, partly cohesive open-channel flows.

    Baas, J. H., Best, J. L. & Kellman, P., 1 Ion 2007.

    Allbwn ymchwil: Cyfraniad at gynhadleddPapur

  6. Cyhoeddwyd

    Bedform development in mixed sand–mud: The contrasting role of cohesive forces in flow and bed

    Baas, J. H., Davies, A. G. & Malarkey, J., 15 Ion 2013, Yn: Geomorphology. 182, t. 19-32

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  7. Cyhoeddwyd

    Bedform migration in a mixed sand and cohesive clay intertidal environment and implications for bed material transport predictions

    Lichtman, I. D., Baas, J. H., Amoudry, L. O., Thorne, P. D., Malarkey, J., Hope, J. A., Peakall, J., Paterson, D. M., Bass, S. J., Cooke, R. D., Manning, A. J., Davies, A. G., Parsons, D. R. & Ye, L., 15 Awst 2018, Yn: Geomorphology. 315, t. 17-32 66 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  8. Cyhoeddwyd

    Bedforms in high concentration flows – Preliminary results of laboratory experiments.

    Kellman, P., Best, J. L., Baas, J. H., Peakall, J. & Parsons, D., 1 Ion 2006.

    Allbwn ymchwil: Cyfraniad at gynhadleddPapur

  9. Cyhoeddwyd

    Behaviour of fully ponded turbidity currents in confined basins: An experimental study.

    Patacci, M., McCaffrey, W. M., Haughton, P., Baas, J. H. & Keevil, G., 1 Ion 2006.

    Allbwn ymchwil: Cyfraniad at gynhadleddPapur

  10. Cyhoeddwyd

    Biomediation of submarine sediment gravity flow dynamics

    Craig, M., Baas, J. H., Amos, K. J., Strachan, L. J., Manning, A. J., Paterson, D. M., Hope, J. A., Nodder, S. D. & Baker, M. L., Ion 2020, Yn: Geology. 48, 1, t. 72-76

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  11. Cyhoeddwyd

    Blood, lead and spheres: a hindered settling equation for sedimentologists based on metadata analysis

    Baas, J. H., Baker, M. L., Buffon, P., Strachan, L. J., Bostock, H. C., Hodgson, D. M., Eggenhuisen, J. T. & Spychala, Y. T., Meh 2022, Yn: The Depositional Record. 8, 2, t. 603-615 13 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  12. Cyhoeddwyd

    Can sedimentological flows with small amounts of clay particles form massive sandstone beds?

    Baas, J. H. & Best, J. L., 1 Ion 2001.

    Allbwn ymchwil: Cyfraniad at gynhadleddPapur

  13. Cyhoeddwyd

    Can vertical stacking of low-angle bedforms produce rhythmic bedding in slurry flow deposits.

    Baas, J. H., Best, J. L. & Peakall, J., 1 Ion 2006.

    Allbwn ymchwil: Cyfraniad at gynhadleddPapur

  14. Cyhoeddwyd

    Can vertical stacking of low-angle bedforms produce rhythmic bedding in slurry flow deposits?

    Baas, J. H., Best, J. L. & Peakall, J., 1 Ion 2007.

    Allbwn ymchwil: Cyfraniad at gynhadleddPapur

  15. Cyhoeddwyd

    Clast-rich debrite and slurry intervals sandwiched within co-genetic turbiditic sandstone: origin, lateral extent and baffle potential.

    Talling, P., Amy, L., McCaffrey, B., Baas, J. H., Peakall, J., Stanbrook, D., Clark, J., Wynn, R., Gee, M. & Masson, D., 1 Ion 2001.

    Allbwn ymchwil: Cyfraniad at gynhadleddPapur

  16. Cyhoeddwyd
  17. Cyhoeddwyd

    Comparing flume and computer simulated turbidite flows – Implications for sediment deposition patterns and reservoir quality.

    Bond, C. E., Baas, J. H., Vinnels, J., McCaffrey, W., Waltham, D. & McClean, S., 1 Ion 2008.

    Allbwn ymchwil: Cyfraniad at gynhadleddPapur

  18. Cyhoeddwyd

    Comparing the transitional behaviour of kaolinite and bentonite suspension flows

    Baas, J., Best, J. L. & Peakall, J., Hyd 2016, Yn: Earth Surface Processes and Landforms. 41, 13, t. 1911-1921

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  19. Cyhoeddwyd

    Comparison of spatio-temporal evolution of experimental particulate gravity flows at two different initial concentrations, based on velocity, grain size and density data.

    Choux, C. M., Baas, J. H., McCaffrey, W. D. & Haughton, P. D., 1 Awst 2005, Yn: Sedimentary Geology. 179, 1-2, t. 49-69

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  20. Cyhoeddwyd
  21. Cyhoeddwyd

    Concepts and applications of fluvial sedimentology: Towards interdisciplinary analysis of process and product.

    Weltje, G. J., Hoogendoorn, R. M., Marriott, S. B. & Baas, J. H., 15 Tach 2007, Yn: Sedimentary Geology. 202, 1-2, t. 1-4

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  22. Cyhoeddwyd

    Conditions for formation of massive turbiditic sandstones by primary depositional processes.

    Baas, J. H., 1 Ebr 2004, Yn: Sedimentary Geology. 166, 3-4, t. 292-310

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  23. Cyhoeddwyd

    Confined Turbidite Systems, by S.A. Lomas & P. Joseph

    Baas, J. H., 1 Ion 2004, Unknown.

    Allbwn ymchwil: Cyfraniad arallCyfraniad Arall

  24. Cyhoeddwyd

    Coupling between suspended sediment distribution and turbulence structure in a laboratory turbidity current.

    Baas, J. H., McCaffrey, W. D., Haughton, P. D. & Choux, C., 1 Ion 2005, Yn: Journal of Geophysical Research - Oceans. 110, c11, t. C11015

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  25. Cyhoeddwyd

    Coupling flow and deposit properties of partly cohesive high-density turbidity currents: An experimental approach.

    Manica, R., Baas, J. H., Peakall, J., Maestri, R. D. & Borges, A. O., 1 Ion 2008.

    Allbwn ymchwil: Cyfraniad at gynhadleddPapur

  26. Cyhoeddwyd

    Critical parameters for cross-fault flow within deep marine clastic reservoirs: An integrated 3D stratigraphic and structural approach.

    Bradbury, P. W., Freeman, S. R., Harris, S. D., Knipe, R. J., McCaffrey, W. D. & Baas, J. H., 1 Ion 2004.

    Allbwn ymchwil: Cyfraniad at gynhadleddPapur

  27. Cyhoeddwyd

    Current- and Wave-Generated Bedforms on Mixed Sand–Clay Intertidal Flats: A New Bedform Phase Diagram and Implications for Bed Roughness and Preservation Potential

    Baas, J., Malarkey, J., Lichtman, I. D., Amoudry, L. O., Thorne, P., Hope, J. A., Peakall, J., Paterson, D. M., Bass, S., Cooke, R. D., Manning, A. J., Parsons, D. & Ye, L., 3 Tach 2021, Yn: Frontiers Earth Science. 9, 747567.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  28. Cyhoeddwyd

    Depositional processes, bedform development and hybrid bed formation in rapidly decelerated cohesive (mud–sand) sediment flows

    Baas, J. H., Best, J. L. & Peakall, J., 1 Rhag 2011, Yn: Sedimentology. 58, 7, t. 1953-1987

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  29. Cyhoeddwyd

    Deposits of depletive high-density turbidity currents: a flume analogue of bed geometry, structure and texture.

    Baas, J. H., Van Kesteren, W. & Postma, G., 1 Hyd 2004, Yn: Sedimentology. 51, 5, t. 1053-1088

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  30. Cyhoeddwyd

    Detection and quantification of suspended sediment concentration and stratification in open channel flows: development and first results using electrical resistance tomography.

    Schlaberg, H. I., Baas, J. H., Wang, M., Best, J. L., Williams, R. A. & Peakall, J., 5 Medi 2005.

    Allbwn ymchwil: Cyfraniad at gynhadleddPapur

  31. Cyhoeddwyd

    Detection and quantification of suspension concentrations and sedimentation layers in channel flows using electrical resistance tomography.

    Schlaberg, H. I., Baas, J. H., Wang, M., Best, J. L., Williams, R. A. & Peakall, J., 1 Ion 2005.

    Allbwn ymchwil: Cyfraniad at gynhadleddPapur

  32. Cyhoeddwyd

    Directional petrological characterisation of deep-marine sandstones using grain fabric and permeability anisotropy: methodologies, theory, application and suggestions for integration.

    Baas, J. H., Hailwood, E. A., McCaffrey, W. D., Kay, M. & Jones, R., 1 Mai 2007, Yn: Earth Science Reviews. 82, 1-2, t. 101-142

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  33. Cyhoeddwyd

    Discontinuity in Equilibrium Wave–Current Ripple Size and Shape and Deep cleaning associated with Cohesive Sand–Clay Beds

    Wu, X., Fernández, R., Baas, J., Malarkey, J. & Parsons, D. R., Medi 2022, Yn: Journal of Geophysical Research: Earth Surface. 127, 9, t. e2022JF006771 e2022JF006771.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  34. Cyhoeddwyd

    Does sand promote or hinder the mobility of cohesive sediment gravity flows?

    Baker, M. L. & Baas, J., Chwef 2023, Yn: Sedimentology. 70, 4, t. 1110-1130 21 t.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  35. Cyhoeddwyd

    Duration of deposition from decelerating high-density turbidity currents.

    Baas, J. H., Van Dam, R. L. & Storms, J. E., 1 Hyd 2000, Yn: Sedimentary Geology. 136, 1-2, t. 71-88

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  36. Cyhoeddwyd

    Dynamics and deposition of sediment-bearing multi-pulsed flows and geological implication

    Ho, V. L., Dorrell, R. M., Keevil, G., Thomas, R. E., Burns, A. D., Baas, J. H. & McCaffrey, W. D., Tach 2019, Yn: Journal of Sedimentary Research. 89, 11, t. 1127-1139

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  37. Cyhoeddwyd

    EZ-ROSE: a computer program for equal-area circular histograms and statistical analysis of two-dimensional vectorial data.

    Baas, J. H., 1 Maw 2000, Yn: Computers and Geosciences. 26, 2, t. 153-166

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  38. Cyhoeddwyd

    Earth Science Editorial.

    Baas, J. H., 1 Gorff 2002, Yn: Annals of the Marie Curie Fellowships. 2, t. 34

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  39. Cyhoeddwyd

    Earth Science Editorial.

    Baas, J. H., 1 Chwef 2004, Yn: Annals of the Marie Curie Fellowships. 3, t. 42

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  40. Cyhoeddwyd

    Effect of biological polymers on mobility and run-out distance of cohesive and non-cohesive sediment gravity flows

    Sobocinska, A. & Baas, J., 1 Hyd 2022, Yn: Marine Geology. 452, 106904.

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  41. Cyhoeddwyd

    Electrical resistance tomography for suspended sediment measurements in open channel flows using a novel sensor design.

    Schlaberg, H. I., Baas, J. H., Wang, M., Best, J. L., Williams, R. A. & Peakall, J., 1 Hyd 2006, Yn: Particle and Particle Systems Characterization. 23, 3-4, t. 313-320

    Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

  42. Cyhoeddwyd

    Enhanced fault seal evaluation of turbidite systems in mature basins: Examples from around the globe.

    Bradbury, P. W., Freeman, S. R., Harris, S. D., Knipe, R. J., McCaffrey, W. D., Baas, J. H. & Lewis, G., 1 Ion 2005.

    Allbwn ymchwil: Cyfraniad at gynhadleddPapur

  43. Cyhoeddwyd

    Experimental Research on Hydraulics and Depositional Mechanisms of High-Density Turbidity Currents.

    Baas, J. H., 1 Ion 2000, 2000 gol. Unknown.

    Allbwn ymchwil: Llyfr/AdroddiadAdroddiad Comisiwn

  44. Cyhoeddwyd

    Experimental constraints on shear mixing rates and processes: implications for the dilution of submarine debris flows

    Talling, P. J., Peakall, J., Sparks, R. S., O'Cofaigh, C., Dowdeswell, J. A., Felix, M., Wynn, R. B., Baas, J. H., Hogg, A. J., Masson, D. G., Taylor, J. & Weaver, P. P., 1 Ion 2002, Glacier-Influenced Sedimentation on High-Latitude Continental Margins. 2002 gol. Geological Society Publishing House, t. 89-104

    Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion CynhadleddPennod

  45. Cyhoeddwyd

    Experimental model for turbulence modulation in natural clay-laden flows.

    Baas, J. H., Best, J. L., Peakall, J. & Wang, M., 1 Ion 2006.

    Allbwn ymchwil: Cyfraniad at gynhadleddPapur

  46. Cyhoeddwyd

    Experimental passive fill of U-shaped burrows.

    Kellman, P., Baas, J. H., Best, J. L. & Uchman, A., 1 Ion 2005.

    Allbwn ymchwil: Cyfraniad at gynhadleddPapur

  47. Cyhoeddwyd

    Experimental turbidity current transport and deposition using scaled realistic bathymetry.

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

    Allbwn ymchwil: Cyfraniad at gynhadleddPapur

  48. Cyhoeddwyd

    Fine Sediment Dynamics in the Marine Environment, by J.C. Winterwerp & C. Kranenberg

    Baas, J. H. & Felix, M., 1 Ion 2003, Unknown.

    Allbwn ymchwil: Cyfraniad arallCyfraniad Arall

  49. Cyhoeddwyd

    Flow behaviour of ponded turbidity currents: an experimental study.

    Patacci, M., McCaffrey, W. M., Haughton, P., Baas, J. H. & Keevil, G., 1 Ion 2008.

    Allbwn ymchwil: Cyfraniad at gynhadleddPapur

  50. Cyhoeddwyd

    Flow dynamics and depositional properties of cohesive mixed sand-mud currents with transient turbulent behaviour.

    Baas, J. H., Best, J. L., Peakall, J., McCaffrey, B. & Wang, M., 1 Ion 2006.

    Allbwn ymchwil: Cyfraniad at gynhadleddPapur

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