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Research Output 1986 2018

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2018

Hydrodynamic modelling of tidal-fluvial flows in a large river estuary

Sandbach, S. D., Nicholas, A. P., Ashworth, P., Best, J. L., Keevil, C., Parsons, D. R., Prokocki, E. W. & Simpson, C. J., 27 Jun 2018, In : Estuarine, Coastal and Shelf Science. 212, p. 176-188

Research output: Contribution to journalArticleResearchpeer-review

Open Access
File
hydrodynamics
estuary
sediment transport
river
modeling

Morphology and spacing of river meander scrolls

Strick, R. J. P., Ashworth, P., Awcock, G. & Lewin, J., 9 Mar 2018, In : Geomorphology. 310, p. 57-68 12 p.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
File
meander
spacing
river
floodplain
geometry

Quantification of bedform dynamics and bedload sediment flux in sandy braided rivers from airborne and satellite imagery

Strick, R. J. P., Ashworth, P., Sambrook Smith, G. H., Nicholas, A., Best, J. L., Lane, S., Parsons, D., Simpson, C. J., Unsworth, C. & Dale, J., 3 Dec 2018, In : Earth Surface Processes and Landforms. 20 p.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
File
airborne sensing
braided river
bedform
bedload
satellite imagery

The adaptation of dunes to changes in river flow

Reesink, A., Parsons, D., Ashworth, P., Best, J., Hardy, R., Murphy, B., McLelland, S. & Unsworth, C., 5 Sep 2018, In : Earth-Science Reviews. 185, p. 1065-1087

Research output: Contribution to journalArticleResearchpeer-review

Open Access
File
river flow
dune
sediment
flow velocity
kinematics

The impact of non-equilibrium flow on the structure of turbulence over river dunes

Unsworth, C., Parsons, D., Hardy, R., Reesink, A., Best, J., Ashworth, P. & Keevil, G., 24 Aug 2018, In : Water Resources Research.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
File
dune
turbulence
river
turbulent flow
flow field
2016

Spillage sedimentation on large river floodplains

Lewin, J., Ashworth, P. & Strick, R. J. P., 22 Jul 2016, In : Earth Surface Processes and Landforms. 42, 2, p. 290-305 16 p.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
File
floodplain
sedimentation
river
relief
spillage
2015

The role of discharge variability in determining alluvial stratigraphy

Nicholas, A. P., Sambrook-Smith, G. H., Amsler, M. L., Ashworth, P., Best, J. L., Hardy, R. J., Lane, S. N., Orfeo, O., Parsons, D. R., Reesink, A. J. H., Sandbach, S. D., Simpson, C. J. & Szupiany, R. N., 11 Nov 2015, In : Geology. 44, 1, p. 3-6 4 p.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
File
stratigraphy
river
paleocurrent
morphodynamics
ground penetrating radar
2014

The negative relief of large river floodplains

Lewin, J. & Ashworth, P., 1 Feb 2014, In : Earth-Science Reviews. 129, p. 1-23 23 p.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
File
floodplain
relief
river
connectivity
wetland
2013

Application of a roughness-length representation to parameterize energy-loss in 3D numerical simulations of large rivers

Sandbach, S. D., Lane, S. N., Hardy, R. J., Amsler, M. L., Ashworth, P., Best, J. L., Orfeo, O., Parsons, D. R., Reesink, A. J. H., Sambrook-Smith, G. H. & Szupiany, R. N., 1 Jan 2013, In : Water Resources Research. 48, 12

Research output: Contribution to journalArticleResearchpeer-review

roughness
river
simulation
energy
bedform

Communicating geomorphology: global challenges for the twenty-first century

Gregory, K., Lane, S. N., Lewin, J., Ashworth, P., Downs, P. W., Kirkby, M. J. & Viles, H. A., 1 Aug 2013, In : Earth Surface Processes and Landforms. 39, 4, p. 476-486 11 p.

Research output: Contribution to journalArticleResearchpeer-review

twenty-first century
academy
impact research
communication
society

Defining large river channel patterns: alluvial exchange and plurality

Lewin, J. & Ashworth, P., 1 Jan 2013, In : Geomorphology. 215, p. 83-98 16 p.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
File
river channel
river
sediment
meander
hydraulics

Deposits of the sandy braided South Saskatchewan River: implications for the use of modern analogs in reconstructing channel dimensions in reservoir characterization

Lunt, I. A., Sambrook-Smith, G. H., Best, J. L., Ashworth, P., Lane, S. N. & Simpson, C. J., 1 Apr 2013, In : Bulletin of the American Association of Petroleum Geologists. 97, 4, p. 553-576 24 p.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
File
reservoir characterization
dune
bedform
river
erosion

Numerical simulation of bar and island morphodynamics in anabranching mega-rivers

Nicholas, A. P., Ashworth, P., Sambrook-Smith, G. H. & Sandbach, S. D., 1 Dec 2013, In : Journal of Geophysical Research: Earth Surface. 118, 4, p. 2019-2044 26 p.

Research output: Contribution to journalArticleResearchpeer-review

Open Access
File
morphodynamics
river
simulation
sand
sediment transport

Quantification of the relationship between surface morphodynamics and subsurface sedimentological product in sandy braided rivers

Parker, N. O., Sambrook-Smith, G. H., Ashworth, P., Best, J. L., Lane, S. N., Lunt, I. A., Simpson, C. J. & Thomas, R. E., 1 Apr 2013, In : Sedimentology. 60, 3, p. 820-839 20 p.

Research output: Contribution to journalArticleResearchpeer-review

File
braided river
morphodynamics
dune
ground penetrating radar
digital elevation model

Scales and causes of heterogeneity in bars in a large multi-channel river: Río Paraná, Argentina

Reesink, A. J. H., Ashworth, P., Sambrook-Smith, G. H., Best, J. L., Parsons, D. R., Amsler, M. L., Hardy, R. J., Lane, S. N., Nicholas, A. P., Orfeo, O., Sandbach, S. D., Simpson, C. J. & Szupiany, R. N., 1 Jan 2013, In : Sedimentology. 61, 4, p. 1055-1085 31 p.

Research output: Contribution to journalArticleResearchpeer-review

File
river channel
river
ripple
fine grained sediment
confluence
2012

How do big rivers come to be different?

Ashworth, P. & Lewin, J., 2012, In : Earth-Science Reviews. 114, 1-2, p. 84-107 24 p.

Research output: Contribution to journalArticleResearchpeer-review

File
river
floodplain
sediment
tributary
sedimentation

Modelling hydrodynamics in the Rio Paraná, Argentina: an evaluation and inter-comparison of reduced-complexity and physics-based models applied to a large sand-bed river

Nicholas, A. P., Sandbach, S. D., Ashworth, P., Amsler, M. L., Best, J. L., Hardy, R. J., Lane, S. N., Orfeo, O., Parsons, D. R., Reesink, A. J. H., Sambrook-Smith, G. H. & Szupiany, R. N., 1 Jan 2012, In : Geomorphology. 169-170, p. 192-211 20 p.

Research output: Contribution to journalArticleResearchpeer-review

river bed
physics
hydrodynamics
sand
modeling

Tributary, distributive and other fluvial patterns; what really represents the norm in the continental rock record (invited review)

Fielding, C. R., Ashworth, P., Best, J. L., Prokocki, E. W. & Sambrook-Smith, G. H., 1 Jan 2012, In : Sedimentary Geology. 261-262, p. 15-32 18 p.

Research output: Contribution to journalArticleResearchpeer-review

tributary
geological record
rock
river
norm
2011

Evolution and sedimentology of a channel fill in the sandy braided South Saskatchewan River and its comparison to the deposits of an adjacent compound bar

Ashworth, P., Sambrook-Smith, G. H., Best, J. L., Bridge, J. S., Lane, S. N., Lunt, I. A., Reesink, A. J. H., Simpson, C. J. & Thomas, R. E., 1 Dec 2011, In : Sedimentology. 58, 7, p. 1860-1883 24 p.

Research output: Contribution to journalArticleResearchpeer-review

sedimentology
fill
river
braided river
comparison
2010

Can we distinguish flood frequency and magnitude in the sedimentological record of rivers?

Sambrook Smith, G., Best, J. L., Ashworth, P., Lane, S. N., Parker, N. O., Lunt, I. A., Thomas, R. E. & Simpson, C. J., 2010, In : Geology. 38, 7, p. 579-582 4 p.

Research output: Contribution to journalArticleResearchpeer-review

flood frequency
river
alluvial deposit
gradualism
overbank flow

Fluvial form in modern continental sedimentary basins: distributive fluvial systems: comment

Sambrook Smith, G. H., Best, J. L., Ashworth, P., Fielding, C. R., Goodbred, S. L. & Prokocki, E. W., Dec 2010, In : Geology. 38, 12, p. 39-42 4 p.

Research output: Contribution to journalArticleResearchpeer-review

Quantification of braided river channel change using archival digital image analysis

Lane, S. N., Widdison, P. E., Thomas, R. E., Ashworth, P., Best, J. L., Lunt, I. A., Sambrook-Smith, G. H. & Simpson, C. J., 2010, In : Earth Surface Processes and Landforms. 35, 8, p. 971-985 15 p.

Research output: Contribution to journalArticleResearchpeer-review

channel change
braided river
digital image
river channel
image analysis
2009

The sedimentology and alluvial architecture of a large braid bar, Rio Paraná, Argentina

Sambrook-Smith, G. H., Ashworth, P., Best, J. L., Lunt, I. A., Orfeo, O. & Parsons, D. R., 1 Jan 2009, In : Journal of Sedimentary Research. 79, 7-8, p. 629-642 14 p.

Research output: Contribution to journalArticleResearchpeer-review

sedimentology
ground penetrating radar
river
dune
reworking
2007

Meander bend evolution, alluvial architecture, and the role of cohesion in sinuous river channels, a flume study

Peakall, J., Ashworth, P. & Best, J. L., 2007, In : Journal of Sedimentary Research. 77, 3, p. 197-212 16 p.

Research output: Contribution to journalArticleResearchpeer-review

meander
river channel
cohesion
geometry
accretion

The relationship between channel avulsion, flow occupancy and aggradation in braided rivers: insights from an experimental model

Ashworth, P., Best, J. L. & Jones, M. A., 2007, In : Sedimentology. 54, 3, p. 497-513 17 p.

Research output: Contribution to journalArticleResearchpeer-review

avulsion
braided river
aggradation
sediment
basin
2006

Bar-top hollows: a new element in the architecture of sandy braided rivers

Best, J. L., Ashworth, P., Woodward, J., Sambrook-Smith, G. H. & Simpson, C. J., 1 Aug 2006, In : Sedimentary Geology. 190, p. 241-255 15 p.

Research output: Contribution to journalArticleResearchpeer-review

braided river
accretion
depositional sequence
ground penetrating radar
scour

The sedimentology and alluvial architecture of the sandy braided South Saskatchewan River, Canada

Sambrook Smith, G. H., Ashworth, P., Best, J. L., Woodward, J. & Simpson, C. J., 2006, In : Sedimentology. 53, 2, p. 413-434 22 p.

Research output: Contribution to journalArticleResearchpeer-review

sedimentology
river
ground penetrating radar
dune
braided river
2004

The relationship between sediment supply and avulsion frequency in braided rivers

Ashworth, P., Best, J. L. & Jones, M., 2004, In : Geology. 32, 1, p. 21-24 4 p.

Research output: Contribution to journalArticleResearchpeer-review

avulsion
braided river
sediment
alluvial fan
sedimentation rate
2003

Three-dimensional sedimentary architecture of a large, mid-channel sand braid bar, Jamuna River, Bangladesh

Best, J. L., Ashworth, P., Bristow, C. S. & Roden, J. E., Jul 2003, In : Journal of Sedimentary Research. 73, 4, p. 516-530 15 p.

Research output: Contribution to journalArticleResearchpeer-review

sand
river
dune
accretion
stratification
2002

Computational fluid dynamics and the physical modelling of an upland urban river

Lin, M., Ashworth, P., Best, J. L., Elliott, L., Ingham, D. B. & Whitcombe, L. J., May 2002, In : Geomorphology. 44, 3-4, p. 375-391 17 p.

Research output: Contribution to journalArticleResearchpeer-review

computational fluid dynamics
secondary flow
river
modeling
flow structure

The physical scale modelling of braided alluvial architecture and estimation of subsurface permeability

Moreton, D. J., Ashworth, P. & Best, J. L., 2002, In : Basin Research. 14, 3, p. 265-287 23 p.

Research output: Contribution to journalArticleResearchpeer-review

permeability
braided river
modeling
stratigraphy
grain size
2000

Morphological evolution and dynamics of a large, sand braid-bar, Jamuna River, Bangladesh

Ashworth, P., Best, J. L., Roden, J., Bristow, C. S. & Klaassen, G. J., 1 Jan 2000, In : Sedimentology. 47, 3, p. 533-555 23 p.

Research output: Contribution to journalArticleResearchpeer-review

sand
river
dune
monsoon
peak flow

River response to lateral ground tilting: a synthesis and some implications for the modelling of alluvial architecture in extensional basins

Peakall, J., Leeder, M. R., Best, J. L. & Ashworth, P., 1 Jan 2000, In : Basin Research. 12, 3-4, p. 413-424 12 p.

Research output: Contribution to journalArticleResearchpeer-review

avulsion
tilt
basin
river
modeling
1999

Turbulence and secondary flow over sediment stripes in weakly bimodal bed material

McLelland, S. J., Ashworth, P., Best, J. L. & Livesey, J. R., 1 Jan 1999, In : Journal of Hydraulic Engineering. 125, 5, p. 463-473 11 p.

Research output: Contribution to journalArticleResearchpeer-review

secondary flow
shear stress
turbulence
sediment
flow structure
1997

Scour in large braided rivers and the recognition of sequence stratigraphic boundaries

Best, J. L. & Ashworth, P., 15 May 1997, In : Nature. 387, p. 275-277 3 p.

Research output: Contribution to journalArticleResearchpeer-review

stratigraphic boundary
braided river
sequence boundary
scour
sea level
1996

Mid-channel bar growth and its relationship to local flow strength and direction

Ashworth, P., 1 Jan 1996, In : Earth Surface Processes and Landforms. 21, 2, p. 103-123 21 p.

Research output: Contribution to journalArticleResearchpeer-review

scour
thalweg
channel change
braided river
confluence
1995

Open-channel diversions: discussion

McLelland, S. J., Ashworth, P. & Best, J. L., 1 Jan 1995, In : Journal of Hydraulic Engineering. 121, 1, p. 87-88 2 p.

Research output: Contribution to journalArticleResearchpeer-review

secondary flow
divergence

Sediment slugs: large-scale fluctuations in fluvial sediment transport rates and storage volumes

Nicholas, A. P., Ashworth, P., Kirkby, M. J., Macklin, M. G. & Murray, T., 1 Dec 1995, In : Progress in Physical Geography. 19, 4, p. 500-519 20 p.

Research output: Contribution to journalArticleResearchpeer-review

slug
alluvial deposit
sediment transport
sediment
sediment wave

Spatial pattern of flow competence and bed load transport in a divided gravel bed river

Ashworth, P. & Powell, D. M., 1 Jan 1995, In : Water Resources Research. 31, 3, p. 741-752 12 p.

Research output: Contribution to journalArticleResearchpeer-review

river bed
bedload
gravel
shear stress
sediment budget
1994

A high-resolution ultrasonic bed profiler for use in laboratory flumes

Best, J. L. & Ashworth, P., 1 Jan 1994, In : Journal of Sedimentary Research. 64, 3a, p. 674-675 2 p.

Research output: Contribution to journalArticleResearchpeer-review

1992

Measurements in a braided river chute and lobe: 1. Flow pattern, sediment transport and channel change

Ferguson, R. I., Ashmore, P. E., Ashworth, P., Paola, C. & Prestegaard, K. L., 1 Jan 1992, In : Water Resources Research. 28, 7, p. 1877-1886 10 p.

Research output: Contribution to journalArticleResearchpeer-review

channel change
braided river
flow pattern
sediment transport
bedload

Measurements in a Braided River chute and lobe: 2. Sorting of bed load during entrainment, transport, and deposition

Ashworth, P., Ferguson, R. I., Ashmore, P. E., Paola, C., Powell, D. M. & Prestegaard, K. L., 1 Jan 1992, In : Water Resources Research. 28, 7, p. 1887-1896 10 p.

Research output: Contribution to journalArticleResearchpeer-review

braided river
bedload
sorting
entrainment
shear stress

Secondary flow in anabranch confluences of a braided, gravel-bed stream

Ashmore, P. E., Ferguson, R. I., Prestegaard, K. L., Ashworth, P. & Paola, C., 1 Jan 1992, In : Earth Surface Processes and Landforms. 17, 3, p. 299-311 13 p.

Research output: Contribution to journalArticleResearchpeer-review

gravel bed stream
secondary flow
confluence
thalweg
flow structure

Virtual rate and mean distance of travel of individual clasts in gravel-bed channels

Hassan, M. A., Church, M. & Ashworth, P., 1 Jan 1992, In : Earth Surface Processes and Landforms. 17, 6, p. 617-627 11 p.

Research output: Contribution to journalArticleResearchpeer-review

clast
gravel
grain size
peak discharge
river bed
1991

Slope-induced changes in channel character along a gravel-bed stream: the Allt Dubhaig, Scotland

Ferguson, R. I. & Ashworth, P., 1 Jan 1991, In : Earth Surface Processes and Landforms. 16, 1, p. 65-82 18 p.

Research output: Contribution to journalArticleResearchpeer-review

gravel bed stream
shear stress
bedload
hydraulic property
tributary
1989

Influence of sand on hydraulics and gravel transport in a braided gravel-bed river

Ferguson, R. I., Prestegaard, K. L. & Ashworth, P., 1 Jan 1989, In : Water Resources Research. 25, 4, p. 635-643 9 p.

Research output: Contribution to journalArticleResearchpeer-review

river bed
bedload
shear stress
gravel
hydraulics

Quantifying deposition on river bars using flexible netting

Ashworth, P. & Ferguson, R. I., 1 Jan 1989, In : Journal of Sedimentary Petrology. 59, 4, p. 623-624 2 p.

Research output: Contribution to journalArticleResearchpeer-review

Size-selective entrainment of bedload in gravel bed streams

Ashworth, P. & Ferguson, R. I., 1 Jan 1989, In : Water Resources Research. 25, 4, p. 627-634 8 p.

Research output: Contribution to journalArticleResearchpeer-review

gravel bed stream
bedload
entrainment
shear stress
size effect
1988

Slope failures in the Ochil Hills, Scotland, November 1984

Jenkins, A., Ashworth, P., Ferguson, R. I., Grieve, I. C., Rowling, P. & Stott, T. A., 1 Jan 1988, In : Earth Surface Processes and Landforms. 13, 1, p. 69-76 8 p.

Research output: Contribution to journalArticleResearchpeer-review

liquid limit
recurrence interval
slope failure
debris flow
sliding
1986

Interrelationships of channel processes, changes and sediments in a proglacial braided river

Ashworth, P. & Ferguson, R. I., 1 Jan 1986, In : Geografiska Annaler Series A-Physical Geography. 68, 4, p. 361-371 11 p.

Research output: Contribution to journalArticleResearchpeer-review

braided river
shear stress
bedload
sediment
flood deposit