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
- 2007
- 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. 1-4Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- 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. 101-142Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Handbook of Clay Science, by F. Bergaya, B.K.G. Theng & G. Lagaly - Book Review
Baas, J. H., 1 Maw 2007, Unknown.Allbwn ymchwil: Cyfraniad arall › Cyfraniad Arall
- 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 gynhadledd › Papur
- 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 gynhadledd › Papur
- Cyhoeddwyd
Modelling rheological and turbulence regimes in kaolinite-rich sediment flows.
Silva Jacinto, R. & Baas, J. H., 1 Ion 2007.Allbwn ymchwil: Cyfraniad at gynhadledd › Papur
- 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 gynhadledd › Papur
- 2006
- 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. 313-320Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Physical Processes in Earth and Environmental Sciences, by M. Leeder & M. Pérez-Arlucea
Baas, J. H., 1 Medi 2006, Unknown.Allbwn ymchwil: Cyfraniad arall › Cyfraniad Arall
- 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 gynhadledd › Papur
- 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 gynhadledd › Papur
- 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 gynhadledd › Papur
- 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 gynhadledd › Papur
- 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 gynhadledd › Papur
- 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 gynhadledd › Papur
- 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 gynhadledd › Papur
- Cyhoeddwyd
Grain fabric control on directional permeability in deep-marine sandstones.
Baas, J. H., McCaffrey, W. D., Hailwood, E. & Kay, M., 1 Ion 2006.Allbwn ymchwil: Cyfraniad at gynhadledd › Papur
- Cyhoeddwyd
Non-cohesive, mixed and cohesive high-density turbidity currents: Flow and deposit properties inferred from laboratory experiments.
Manica, R., Baas, J. H., De Oliveira Borges, A. L., Maestri, R. D., Peakall, J. & McCaffrey, W. D., 1 Ion 2006.Allbwn ymchwil: Cyfraniad at gynhadledd › Papur
- 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 gynhadledd › Papur
- 2005
- 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. 309-320Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- 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 gynhadledd › Papur
- Cyhoeddwyd
Introduction to the Physics of Cohesive Sediment Dynamics in the Marine Environment, by J.C.Winterwerp & C. Van Kesteren
Baas, J. H., 1 Medi 2005, Unknown.Allbwn ymchwil: Cyfraniad arall › Cyfraniad Arall
- 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. 49-69Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Sediment gravity flows: Recent advances in process and field analysis – Introduction
Baas, J. H., 1 Awst 2005, Yn: Sedimentary Geology. 179, 1-2, t. 1-3Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Submarine Mass Movements and their Consequences, by J. Locat, & J. Mienert
Baas, J. H. & Strachan, L., 1 Mai 2005, Unknown.Allbwn ymchwil: Cyfraniad arall › Cyfraniad Arall
- 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. C11015Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- 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 gynhadledd › Papur
- 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 gynhadledd › Papur
- 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 gynhadledd › Papur
- Cyhoeddwyd
Turbulence modulation in clay-laden flows over ripples and dunes.
Baas, J. H. & Best, J. L., 1 Ion 2005.Allbwn ymchwil: Cyfraniad at gynhadledd › Papur
- 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 gynhadledd › Papur
- 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 gynhadledd › Papur
- 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 gynhadledd › Papur
- 2004
- 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. 1053-1088Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- 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. 292-310Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- Cyhoeddwyd
Earth Science Editorial.
Baas, J. H., 1 Chwef 2004, Yn: Annals of the Marie Curie Fellowships. 3, t. 42Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- 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., Baas, J. H., McCaffrey, W. D. & Haughton, P. D., 1 Ion 2004.Allbwn ymchwil: Cyfraniad at gynhadledd › Papur
- Cyhoeddwyd
Confined Turbidite Systems, by S.A. Lomas & P. Joseph
Baas, J. H., 1 Ion 2004, Unknown.Allbwn ymchwil: Cyfraniad arall › Cyfraniad Arall
- 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 gynhadledd › Papur
- Cyhoeddwyd
Passive sediment filling of U-shaped animal burrows.
Kellman, P., Baas, J. H., Best, J. L. & Uchman, A., 1 Ion 2004.Allbwn ymchwil: Cyfraniad at gynhadledd › Papur
- 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 gynhadledd › Papur
- Cyhoeddwyd
Turbulence modulation behind ripples and dunes in clay-laden currents.
Baas, J. H. & Best, J. L., 1 Ion 2004.Allbwn ymchwil: Cyfraniad at gynhadledd › Papur
- 2003
- Cyhoeddwyd
Spatio-temporal evolution of velocity structure, concentration and grainsize stratification within experimental particulate gravity currents.
McCaffrey, W. D., Choux, C. M., Baas, J. H. & Haughton, P. D., 1 Meh 2003, Yn: Marine and Petroleum Geology. 20, 6-8, t. 851-860Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- 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 arall › Cyfraniad Arall
- Cyhoeddwyd
Looking inside turbidity currents: the effects of spatial and temporal changes in velocity, concentration and grain size on depositional properties.
Baas, J. H., McCaffrey, W. D., Choux, C. & Haughton, P. D., 1 Ion 2003.Allbwn ymchwil: Cyfraniad at gynhadledd › Papur
- Cyhoeddwyd
Muddy Coasts of the World: Processes, Deposits and Function, by T. Healy, Y. Wang & J.-A. Healy
Baas, J. H., 1 Ion 2003, Unknown.Allbwn ymchwil: Cyfraniad arall › Cyfraniad Arall
- Cyhoeddwyd
Ripple, Ripple Mark, Ripple Structure.
Baas, J. H. & Middleton, G. V. (Golygydd), 1 Ion 2003, Encyclopedia of Sediments and Sedimentary Rocks. 2003 gol. Kluwer Academic Publishers, t. 565-567Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- 2002
- Cyhoeddwyd
Earth Science Editorial.
Baas, J. H., 1 Gorff 2002, Yn: Annals of the Marie Curie Fellowships. 2, t. 34Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
- 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. 89-104Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
- Cyhoeddwyd
Flume analogue of geometry, structure and texture of high-density turbidity current deposits at the mouth of deep-marine channels.
Baas, J. H. & Postma, G., 1 Ion 2002.Allbwn ymchwil: Cyfraniad at gynhadledd › Papur