All Outputs (31)

Long-term flood controls on semi-arid river form: Evidence from the Sabie and Olifants rivers, eastern South Africa (2014)
Presentation / Conference Contribution
Heritage, G., Tooth, S., Entwistle, N., & Milan, D. Long-term flood controls on semi-arid river form: Evidence from the Sabie and Olifants rivers, eastern South Africa

Rivers in the Kruger National Park, eastern South Africa, are characterised by bedrock-influenced ‘macrochannels’ containing variable alluvial thicknesses and riparian vegetation assemblages. Evidence from the Sabie and Olifants rivers suggests that... Read More about Long-term flood controls on semi-arid river form: Evidence from the Sabie and Olifants rivers, eastern South Africa.

Anastomosing reach control on hydraulics and sediment distribution on the Sabie River, South Africa (2014)
Journal Article
Entwistle, N., Heritage, G., Tooth, S., & Milan, D. (2014). Anastomosing reach control on hydraulics and sediment distribution on the Sabie River, South Africa. Proceedings of the International Association of Hydrological Sciences, 367, 215-219. https://doi.org/10.5194/piahs-367-215-2015

Rivers in the Kruger National Park, South Africa, have variable degrees of bedrock and alluvial influence. Pre-2000 aerial imagery for the Sabie River (catchment area 6320 km2) reveals downstream alternations from alluvial single thread or braided, t... Read More about Anastomosing reach control on hydraulics and sediment distribution on the Sabie River, South Africa.

Magnetic tracing of fine-sediment over pool-riffle morphology (2013)
Journal Article
Milan, D. J., & Large, A. R. (2014). Magnetic tracing of fine-sediment over pool-riffle morphology. CATENA, 115, 134-149. https://doi.org/10.1016/j.catena.2013.11.003

Field studies documenting fine-sediment (< 2 mm) transport in gravel-bed rivers are rare. For the first time in a fluvial environment, a technique that enhances the magnetic susceptibility of sand is used to trace its longitudinal dispersion and stor... Read More about Magnetic tracing of fine-sediment over pool-riffle morphology.

Virtual velocity of tracers in a gravel-bed river using size-based competence duration (2013)
Journal Article
Milan, D. J. (2013). Virtual velocity of tracers in a gravel-bed river using size-based competence duration. Geomorphology, 198, 107-114. https://doi.org/10.1016/j.geomorph.2013.05.018

Virtual velocity (Vi) of river gravels is commonly used to determine sediment transport rates and gravel dispersion dynamics. Virtual velocity is calculated from tracer gravel step-length data as the distance travelled divided by the duration of comp... Read More about Virtual velocity of tracers in a gravel-bed river using size-based competence duration.

Sediment routing hypothesis for pool-riffle maintenance (2013)
Journal Article
Milan, D. J. (2013). Sediment routing hypothesis for pool-riffle maintenance. Earth surface processes and landforms : the journal of the British Geomorphological Research Group, 38(14), 1623-1641. https://doi.org/10.1002/esp.3395

This paper provides comprehensive evidence that sediment routing around pools is a key mechanism for pool-riffle maintenance in sinuous upland gravel-bed streams. The findings suggest that pools do not require a reversal in energy for them to scour o... Read More about Sediment routing hypothesis for pool-riffle maintenance.

Geomorphic impact and system recovery following an extreme flood in an upland stream: Thinhope Burn, northern England, UK (2012)
Journal Article
Milan, D. J. (2012). Geomorphic impact and system recovery following an extreme flood in an upland stream: Thinhope Burn, northern England, UK. Geomorphology, 138(1), 319-328. https://doi.org/10.1016/j.geomorph.2011.09.017

Quantitative assessments of the impacts of extreme floods on channel morphology are rare. Real Time Kinematic (RTK) GPS surveys of a 500-m reach of the Thinhope Burn, an upland gravel-bed stream in the UK, taken in 2003 and 2004 permitted an assessme... Read More about Geomorphic impact and system recovery following an extreme flood in an upland stream: Thinhope Burn, northern England, UK.

Filtering spatial error from DEMs: implicatons for morphological change estimation (2010)
Journal Article
Milan, D. J., Heritage, G. L., Large, A. R. G., & Fuller, I. C. (2011). Filtering spatial error from DEMs: implicatons for morphological change estimation. Geomorphology, 125(1), 160-171. https://doi.org/10.1016/j.geomorph.2010.09.012

Scour and fill estimation from digital elevation model (DEM) subtraction or differencing is an increasingly common technique in morphological and sediment transport investigations. The technique is commonly used to estimate scour and fill volumes and... Read More about Filtering spatial error from DEMs: implicatons for morphological change estimation.

Mapping hydraulic biotopes using terrestrial laser scan data of water surface properties (2010)
Journal Article
Milan, D., Heritage, G., Large, A., & Entwistle, N. (2010). Mapping hydraulic biotopes using terrestrial laser scan data of water surface properties. Earth surface processes and landforms : the journal of the British Geomorphological Research Group, 35(8), 918-931. https://doi.org/10.1002/esp.1948

For more than a decade, habitat mapping using biotopes (in-channel hydraulically-defined habitats) has underpinned aquatic conservation in the UK through (a) providing baseline information on system complexity and (b) allowing environmental and ecolo... Read More about Mapping hydraulic biotopes using terrestrial laser scan data of water surface properties.

Influence of survey strategy and interpolation model on DEM quality (2009)
Journal Article
Heritage, G. L., Milan, D. J., Large, A. R., & Fuller, I. C. (2009). Influence of survey strategy and interpolation model on DEM quality. Geomorphology, 112(3-4), 334-344. https://doi.org/10.1016/j.geomorph.2009.06.024

Accurate characterisation of morphology is critical to many studies in the field of geomorphology, particularly those dealing with changes over time. Digital elevation models (DEMs) are commonly used to represent morphology in three dimensions. The q... Read More about Influence of survey strategy and interpolation model on DEM quality.

Terrestrial Laser Scanning of grain roughness in a gravel-bed river (2009)
Journal Article
Heritage, G. L., & Milan, D. J. (2009). Terrestrial Laser Scanning of grain roughness in a gravel-bed river. Geomorphology, 113(1-2), 4-11. https://doi.org/10.1016/j.geomorph.2009.03.021

This paper demonstrates the application of Terrestrial Laser Scanning (TLS) to determine the full population of grain roughness in gravel-bed rivers. The technique has the potential to completely replace the need for complex, time-consuming manual sa... Read More about Terrestrial Laser Scanning of grain roughness in a gravel-bed river.

Alluvial anastomosed channels : the preferred channel type on active UK rivers
Presentation / Conference Contribution
Milan, D., Entwistle, N., & Heritage, G. Alluvial anastomosed channels : the preferred channel type on active UK rivers

Paper presented at 11th International Symposium on EcoHydraulics, 7-12 February 2016, Melbourne, Australia. Abstract: Anastomosing rivers constitute an important category of multi-channel rivers and are characterised by multiple, interconnected, coex... Read More about Alluvial anastomosed channels : the preferred channel type on active UK rivers.