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

• BSc: Sedimentary Geology (Utrecht University)
  1988
• PhD: Bedform Dynamics (Utrecht University)

I teach a range of undergraduate and postgraduate modules in geological oceanography, sedimentology, physical geography, and general research skills. 

In Bangor, I have supervised 9 PhD students (3 as lead supervisor).

Marijke de Vet: Turbulent-laminar transitions in flows laden with cohesive sediment  (Dorrell, Hull; Baas, Bangor), Funded by Turbidite Research Group, Leeds.

Megan Baker: Effect of clay type on sediment gravity flow dynamics (Baas, Bangor), Funded by StatOil.

Melissa Craig: Effect of cohesive biological polymers on sediment gravity flow dynamics (Amos, Adelaide; Baas, Bangor; Strachan, New Zealand), Funded by University of Adelaide.

Connor McCarron: Hiding-exposure effect on the transport of mixed sand-gravel (van Landeghem, Baas, Bangor), Funded by NERC.

Dougal Lichtman: Combined effects of hydrodynamics and cohesive clay on bedform morphology and migration on sand tidal flats (Thorne, Amoudry, NOC Liverpool; Baas, Bangor), Funded by NERC.

Julie Hope: The biological mediation of cohesive and non-­cohesive sediment dynamics (Paterson, USTAN; Baas, Bangor), Funded by NERC.

Xuxu Wu: Wave ripple development in mixed clay-sand (Parsons, Hull; Baas, Bangor), Funded by University of Hull.

Cai Ladd: Ecological resilience in a hydrological context: Interactions of biological and physical processes on patterns of saltmarsh erosion (Skov, Baas, Bangor), Funded by NERC.

Iris Verhagen: Flow-sediment interactions in turbidity currents moving over soft, muddy beds (Baas, Bangor; McCaffrey, Leeds), Funded by Turbidite Research Group, Leeds.

2024

• CyhoeddwydFine 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 gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydFlow-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 gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydInfluence 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 gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• E-gyhoeddi cyn argraffuIntegrating 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 gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydMarine 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 gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydOn 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 arbenigol › Erthygl
• CyhoeddwydPreservation 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 gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• Wedi ei Dderbyn / Yn y wasgUsing 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 Cynhadledd › Pennod › adolygiad gan gymheiriaid

2023

• CyhoeddwydDoes 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 gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydStreamwise 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 gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2022

• CyhoeddwydBlood, 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 gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydDiscontinuity 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 gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydEffect 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 gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2021

• CyhoeddwydCurrent- 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 gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydRapid gravity flow transformation revealed in a single climbing ripple
  Baas, J. H., Best, J. & Peakall, J., 1 Mai 2021, Yn: Geology. 49, 5, t. 493-497
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydSole marks reveal deep-marine depositional process and environment: implications for flow transformation and hybrid event bed models
  Baas, J., Tracey, N. D. & Peakall, J., 4 Hyd 2021, Yn: Journal of Sedimentary Research. 91, 9, t. 986–1009
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2020

• CyhoeddwydAn 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 gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydBiomediation 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 gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydInteractions between sediment microbial ecology and physical dynamics drive heterogeneity in contextually similar depositional systems
  Hope, J. A., Malarkey, J., Baas, J. H., Peakall, J., Parsons, D., Manning, A. J., Bass, S., Lichtman, I., Thorne, P., Ye, L. & Paterson, D. M., Hyd 2020, Yn: Limnology and Oceanography. 65, 10, t. 2403-2419
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydMixed Sand—Mud Bedforms Produced by Transient Turbulent Flows in the Fringe of Submarine Fans: Indicators of Flow Transformation
  Baker, M. L. & Baas, J. H., Awst 2020, Yn: Sedimentology. 67, 5, t. 2645-2671 27 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2019

• CyhoeddwydDynamics 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 gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydIntegrating field and laboratory approaches for ripple development in mixed sand-clay-EPS
  Baas, J. H., Baker, M., Malarkey, J., Bass, S. J., Manning, A. J., Hope, J. A., Peakall, J., Lichtman, I., Ye, L., Davies, A., Parsons, D. R., Paterson, D. M. & Thorne, P. D., Rhag 2019, Yn: Sedimentology. 66, 7, t. 2749-2768 20 t.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydThe 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 gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2018

• CyhoeddwydBedform 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 gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydWave 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 gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2017

• CyhoeddwydThe 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 gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2016

• Cyhoeddwyd5th International Conference on Marine & River Dune Dynamics (MARID), April 4th-6th, Caernarfon, UK
  Van Landeghem, K., Garlan, T., Baas, J. H. & Van Landeghem, K. J. (Golygydd), 4 Ebr 2016, Unknown Publisher.
  Allbwn ymchwil: Llyfr/Adroddiad › Llyfr
• CyhoeddwydComparing 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 gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydPredicting bedforms and primary current stratification in cohesive mixtures of mud and sand
  Baas, J. H., Best, J. L. & Peakall, J., Ion 2016, Yn: Journal of the Geological Society. 173, 1, t. 12-45
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydThe 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 gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydThresholds 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 gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2015

• CyhoeddwydSticky stuff: Redefining bedform prediction in modern and ancient environments
  Schindler, R. J., Parsons, D. R., Ye, L., Hope, J. A., Baas, J. H., Peakall, J., Manning, A. J., Aspden, R. J., Malarkey, J., Simmons, S., Paterson, D. M., Lichtman, I. D., Davies, A. G., Thorne, P. D. & Bass, S. J., 27 Maw 2015, Yn: Geology.
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydThe 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 gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2014

• CyhoeddwydProcesses and products of turbidity currents entering soft muddy substrates
  Baas, J. H., Manica, R., Puhl, E., Verhagen, I. & de O.Borges, A. L., Mai 2014, Yn: Geology. 42, 5, t. 371-374
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydSediment Composition Influences Spatial Variation in the Abundance of Human Pathogen Indicator Bacteria within an Estuarine Environment
  Perkins, T. L., Clements, K., Baas, J. H., Jago, C. F., Jones, D. L., Malham, S. K. & McDonald, J. E., 14 Tach 2014, Yn: PLoS ONE. 9, 11
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydWave 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 gynhadledd › Papur

2013

• CyhoeddwydBedform 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 gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2012

• CyhoeddwydReversed sediment wave migration in the Irish Sea, NW Europe: A reappraisal of the validity of geometry-based predictive modelling and assumptions
  Van Landeghem, K. J., Baas, J. H., Mitchell, N., Wilcockson, D. & Wheeler, A. J., 15 Chwef 2012, Yn: Marine Geology. 295-298, t. 95-112
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2011

• CyhoeddwydDepositional 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 gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2009

• CyhoeddwydA 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 gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2008

• CyhoeddwydComparing 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 gynhadledd › Papur
• CyhoeddwydCoupling 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 gynhadledd › Papur
• CyhoeddwydFlow 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 gynhadledd › Papur
• CyhoeddwydOn the flow of natural clay suspensions over smooth and rough beds.
  Baas, J. H. & Best, J. L., 1 Ion 2008.
  Allbwn ymchwil: Cyfraniad at gynhadledd › Papur
• CyhoeddwydThe 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 gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydThe river-estuarine transition zone (RETZ) of the Afon Dyfi (West Wales) as test bed for sediment transfer between river catchments and coastal environments.
  Baas, J. H., Jago, C. F., Macklin, M. & CCCR Team, 1 Ion 2008.
  Allbwn ymchwil: Cyfraniad at gynhadledd › Papur

2007

• CyhoeddwydBedform 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
• CyhoeddwydCan 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
• CyhoeddwydConcepts 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 gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydDirectional 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 gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydHandbook 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
• CyhoeddwydModelling rheological and turbulence regimes in kaolinite-rich sediment flows.
  Silva Jacinto, R. & Baas, J. H., 1 Ion 2007.
  Allbwn ymchwil: Cyfraniad at gynhadledd › Papur
• CyhoeddwydSuspended 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

• CyhoeddwydAn 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
• CyhoeddwydBedforms 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
• CyhoeddwydBehaviour 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
• CyhoeddwydCan 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
• CyhoeddwydElectrical 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 gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydExperimental 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
• CyhoeddwydExperimental 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
• CyhoeddwydFlow 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
• CyhoeddwydGrain 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
• CyhoeddwydNon-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
• CyhoeddwydPhysical 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
• CyhoeddwydThe 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

• CyhoeddwydComparison 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 gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydCoupling 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 gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydDetection 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
• CyhoeddwydDetection 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
• CyhoeddwydEnhanced 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
• CyhoeddwydExperimental 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
• CyhoeddwydIntroduction 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
• CyhoeddwydSediment gravity flows: Recent advances in process and field analysis – Introduction
  Baas, J. H., 1 Awst 2005, Yn: Sedimentary Geology. 179, 1-2, t. 1-3
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydSubmarine 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
• CyhoeddwydThe 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 gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydTurbulence modulation in clay-laden flows over ripples and dunes.
  Baas, J. H. & Best, J. L., 1 Ion 2005.
  Allbwn ymchwil: Cyfraniad at gynhadledd › Papur
• CyhoeddwydTurbulence 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
• CyhoeddwydTurbulence-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
• CyhoeddwydWhen 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

• CyhoeddwydComparison 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
• CyhoeddwydConditions 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 gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydConfined Turbidite Systems, by S.A. Lomas & P. Joseph
  Baas, J. H., 1 Ion 2004, Unknown.
  Allbwn ymchwil: Cyfraniad arall › Cyfraniad Arall
• CyhoeddwydCritical 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
• CyhoeddwydDeposits 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 gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydEarth Science Editorial.
  Baas, J. H., 1 Chwef 2004, Yn: Annals of the Marie Curie Fellowships. 3, t. 42
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydPassive 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
• CyhoeddwydTemporal 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
• CyhoeddwydTurbulence 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

• CyhoeddwydFine 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
• CyhoeddwydLooking 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
• CyhoeddwydMuddy 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
• CyhoeddwydRipple, 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. 565-567
  Allbwn ymchwil: Pennod mewn Llyfr/Adroddiad/Trafodion Cynhadledd › Pennod
• CyhoeddwydSpatio-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. 851-860
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2002

• CyhoeddwydEarth Science Editorial.
  Baas, J. H., 1 Gorff 2002, Yn: Annals of the Marie Curie Fellowships. 2, t. 34
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydExperimental 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 Cynhadledd › Pennod
• CyhoeddwydFlume 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
• CyhoeddwydTurbulence 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 gyfnodolyn › Erthygl › adolygiad gan gymheiriaid

2001

• CyhoeddwydCan 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 gynhadledd › Papur
• CyhoeddwydClast-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 gynhadledd › Papur
• CyhoeddwydSand Deposition from High-Density Turbidity Currents: Implications for the Emplacement Mode, Internal Structure, Texture and Geometry of Deep-Water Massive Sandstone Beds.
  Baas, J. H., 1 Ion 2001, 2001 gol. Unknown.
  Allbwn ymchwil: Llyfr/Adroddiad › Adroddiad Comisiwn

2000

• CyhoeddwydClay-laden currents: transition between turbulent and laminar flow and implications for the genesis of massive sand beds.
  Baas, J. H. & Best, J. L., 1 Ion 2000.
  Allbwn ymchwil: Cyfraniad at gynhadledd › Papur
• CyhoeddwydDuration 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 gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydEZ-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 gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydExperimental Research on Hydraulics and Depositional Mechanisms of High-Density Turbidity Currents.
  Baas, J. H., 1 Ion 2000, 2000 gol. Unknown.
  Allbwn ymchwil: Llyfr/Adroddiad › Adroddiad Comisiwn
• CyhoeddwydRipple formation induced by biogenic mounds – Comment
  Baas, J. H. & Best, J. L., 15 Awst 2000, Yn: Marine Geology. 168, 1-4, t. 145-151
  Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
• CyhoeddwydTDURE : 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 gynhadledd › Papur
• CyhoeddwydTextural characteristics of deep-marine massive sandstones: distinguishing between deposits of turbiditic and debris flow origin.
  Baas, J. H., Nemec, W. & Ravnas, R., 1 Ion 2000.
  Allbwn ymchwil: Cyfraniad at gynhadledd › Papur
• CyhoeddwydTurbulence 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 gynhadledd › Papur
• CyhoeddwydVisualizing 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 gynhadledd › Papur

2018

• How researchers are ensuring that their work has an impact

  Nature Career Feature. Work and motivation of SOS visiting PhD student Melissa Craig and her supervisor Dr Jaco H. Baas highlighted.

  9 Ebr 2018

  Cysylltau:

  • https://www.nature.com/articles/d41586-018-03925-8
  Gweithgaredd: Mathau o waith ymgysylltu â'r cyhoedd a gwaith maes - Erthygl neu gyfranogiad yn y cyfryngau (Cyfrannwr)

• Marine Alliance for Science and Technology for Scotland

  (Heb ei ddechrau)

• PhD Studentship with StatOil

  01/10/2014 – 31/12/2024 (Wrthi'n gweithredu)

• Realistic Sedimentary Bedform Prediction (COHBED)

  05/01/2012 – 31/08/2016 (Wedi gorffen)

• Fluid Sediment Interaction In Open-Channels

  01/06/2009 – 15/09/2013 (Wedi gorffen)

Current

Effect of clay type on sediment gravity flow dynamics. Funded by StatOil. Collaborators: Jaco H. Baas (Bangor), Ian Kane (Manchester), various (Statoil Bergen).

Wave-induced bedform dynamics in mixed cohesive-noncohesive sediments. Funded by 7th Framework Programme, European Union, Hydralab IV. Collaborators: Jaco H. Baas (Bangor), Joris Eggenhuisen, Gerben Ruessink (Utrecht), Matthieu Cartigny (Durham), Peter Thorne, Laurent Amoudry (NOC Liverpool), Dominique Mouaze (Caen).

Silt and very fine sand as main drivers of sediment deposition in submarine fans. Funded by TNA programme of EPOS Multi-Scale Laboratories. Collaborators: Jaco H. Baas, Megan Baker (Bangor), Joris Eggenhuisen (Utrecht), Lorna Strachan (Auckland, New Zealand), David Hodgson (Leeds).

Effect of ‘sticky’ biological polymers on the transport of sand and clay by underwater landslides. Funded by Santander Mobility Award. Collaborators: Jaco H. Baas (Bangor), Rafael Manica, Patricia Buffon (Porto Alegre, Brazil)

Validating a new model for particle suspension using laboratory flume experiments. Funded by Seed Funding Programme of UCD, Ireland. Collaborators: Lawrence Amy (UCD), Jaco H. Baas (Bangor), Rob Dorrell (Hull).

GEOSTICK: Morphodynamic Stickiness. Funded by European Research Council, Brussels. Collaborators: Daniel Parsons (Hull), Jaco H. Baas, Jonathan Malarkey (Bangor).

Turbulent-laminar transitions in flows laden with cohesive sediment. Funded by Turbidite Research Group, Leeds. Collaborators: Robert Dorrell (Durham), Daniel Parsons (Hull), Jaco H. Baas (Bangor), Bill McCaffrey (Leeds).

Completed

Experimental cohesive sediment gravity flows and their deposits. Funded by Universidade FRGS, Porto Alegre, Brazil. Collaborators: Jaco H. Baas (Bangor), Rafael Manica (Porto Alegre).

Realistic sedimentary bedform prediction: Incorporating physical and biological cohesion (COHBED). Funded by NERC. Collaborators: Jaco H. Baas, Alan Davies, Jonathan Malarkey (Bangor), Peter Thorne (NOC Liverpool), Sarah Bass, Andrew Manning, Robert Schindler (Plymouth), Daniel Parsons (Hull), David Paterson (USTAN), Jeff Peakall (Leeds). 

The role of estuarine sediments as a reservoir for pathogenic micro-organisms. Funded by Welsh Water. Collaborators: Shelagh Malham, Colin Jago, Jaco H. Baas (Bangor)

Intrabed turbidity currents. Funded by Universidade FRGS, Porto Alegre, Brazil. Collaborators: Jaco H. Baas (Bangor), Rafael Manica (Porto Alegre).

Framework for Ria Formosa water quality, aquaculture and resource development. Funded by 7th Framework Programme, European Union, COEXIST. Collaborators: various (Lisbon), Jaco H. Baas (Bangor).

Impacts of hydrological variability on material transfers through the river-estuary transition zone (RETZ). Funded by NERC. Collaborators: Colin Jago, Jaco H. Baas, Hilary Kennedy, Simon Neill (Bangor).

The environmental application of field-based ultrasonic Doppler velocimetry in sandy and muddy estuaries. Funded by CCCR. Collaborators: Colin Jago, Jaco H. Baas (Bangor).

Field observation and modelling of the sediment triad (FORMOST). Funded by NERC. Collaborators: Alan Davies, Jaco H. Baas, Colin Jago (Bangor), Laurent Amoudry, Alex Souza, Peter Thorne, Judith Wolfe (NOC Liverpool).