Search Results - "Wiggs, Giles F.S."

Uncertainty propagation in aeolian processes: From threshold shear velocity to sand transport rate by Raffaele, Lorenzo, Bruno, Luca, Wiggs, Giles F.S.

“…The accurate estimation of aeolian saltation events is a fundamental requirement in the modelling of wind erosion, dust emission, dune movement and aeolian…”
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Aeolian sand strip mobility and protodune development on a drying beach: examining surface moisture and surface roughness patterns measured by terrestrial laser scanning by Nield, Joanna M., Wiggs, Giles F.S., Squirrell, Robert S.

“…Ephemeral aeolian sand strips are commonplace on beaches. Their formation during high energy sand transport events often precedes the development of protodunes…”
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Field measurements of mean and turbulent airflow over a barchan sand dune by Weaver, Corinne M., Wiggs, Giles F.S.

“…Advances in our knowledge of the aeolian processes governing sand dune dynamics have been restricted by a reliance on measures of time-averaged airflow, such…”
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Geomorphology of desert sand dunes: A review of recent progress by Livingstone, Ian, Wiggs, Giles F.S., Weaver, Corinne M.

“…Through the 1980s and 1990s studies of the geomorphology of desert sand dunes were dominated by field studies of wind flow and sand flow over individual dunes…”
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Dynamics of skimming flow in the wake of a vegetation patch by Mayaud, Jerome R., Wiggs, Giles F.S., Bailey, Richard M.

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The application of terrestrial laser scanning to aeolian saltation cloud measurement and its response to changing surface moisture by Nield, Joanna M., Wiggs, Giles F.S.

“…Saltation is the dominant form of aeolian transport of sand sized grains, yet its heterogeneous spatial and temporal distribution, and inherent feedback and…”
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Characterizing turbulent wind flow around dryland vegetation by Mayaud, Jerome R., Wiggs, Giles F.S., Bailey, Richard M.

“…Wind flow has been studied in situations where it encounters porous and solid windbreaks, but there has been a lack of research exploring turbulent wind…”
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Local Wind Regime Induced by Giant Linear Dunes: Comparison of ERA5-Land Reanalysis with Surface Measurements by Gadal, Cyril, Delorme, Pauline, Narteau, Clément, Wiggs, Giles F. S., Baddock, Matthew, Nield, Joanna M., Claudin, Philippe

“…Emergence and growth of sand dunes results from the dynamic interaction between topography, wind flow and sediment transport. While feedbacks between these…”
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Responsible agriculture must adapt to the wetland character of mid‐latitude peatlands by Freeman, Benjamin W. J., Evans, Chris D., Musarika, Samuel, Morrison, Ross, Newman, Thomas R., Page, Susan E., Wiggs, Giles F. S., Bell, Nicholle G. A., Styles, David, Wen, Yuan, Chadwick, David R., Jones, Davey L.

“…Drained, lowland agricultural peatlands are greenhouse gas (GHG) emission hotspots and a large but vulnerable store of irrecoverable carbon. They exhibit soil…”
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Modelling aeolian sand transport using a dynamic mass balancing approach by Mayaud, Jerome R., Bailey, Richard M., Wiggs, Giles F.S., Weaver, Corinne M.

“…Knowledge of the changing rate of sediment flux in space and time is essential for quantifying surface erosion and deposition in desert landscapes. Whilst many…”
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Quantifying the effect of geomorphology on aeolian dust emission potential in northern China by Cui, Mengchun, Lu, Huayu, Wiggs, Giles F.S., Etyemezian, Vicken, Sweeney, Mark R., Xu, Zhiwei

“…Representation of dust sources remains a key challenge in quantifying the dust cycle and its environmental and climatic impacts. Direct measurements of dust…”
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Holocene dynamics of the southern westerly winds over the Indian Ocean inferred from a peat dust deposition record by Li, Chuxian, Sonke, Jeroen E., Le Roux, Gaël, Van der Putten, Nathalie, Piotrowska, Natalia, Jeandel, Catherine, Mattielli, Nadine, Benoit, Mathieu, Wiggs, Giles F.S., De Vleeschouwer, François

“…The southern westerly winds (SWW) play a major role in climate variability in Southern Hemisphere mid- and high-latitudes, regulating rainfall, ocean…”
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Early‐stage aeolian protodunes: Bedform development and sand transport dynamics by Baddock, Matthew C., Nield, Joanna M., Wiggs, Giles F.S.

“…Early‐stage aeolian bedforms, or protodunes, are elemental in the continuum of dune development and act as essential precursors to mature dunes. Despite this,…”
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Complementary classifications of aeolian dunes based on morphology, dynamics, and fluid mechanics by Courrech du Pont, Sylvain, Rubin, David M., Narteau, Clément, Lapôtre, Mathieu G.A., Day, Mackenzie, Claudin, Philippe, Livingstone, Ian, Telfer, Matt W., Radebaugh, Jani, Gadal, Cyril, Gunn, Andrew, Hesp, Patrick A., Carpy, Sabrina, Bristow, Charles S., Baas, Andreas C.W., Ewing, Ryan C., Wiggs, Giles F.S.

“…Dunes form where winds blow over a bed of mobile sediment grains — conditions that are common in our solar system. On Earth, dunes abound in arid continental…”
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Topographic perturbation of turbulent boundary layers by low‐angle, early‐stage aeolian dunes by Bristow, Nathaniel R., Best, Jim, Wiggs, Giles F. S., Nield, Joanna M., Baddock, Matthew C., Delorme, Pauline, Christensen, Kenneth T.

“…Decimeter‐scale early‐stage aeolian bedforms represent topographic features that differ notably from their mature dune counterparts, with nascent forms…”
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Salt Polygons and Porous Media Convection by Lasser, Jana, Nield, Joanna M., Ernst, Marcel, Karius, Volker, Wiggs, Giles F. S., Threadgold, Matthew R., Beaume, Cédric, Goehring, Lucas

“…From fairy circles to patterned ground and columnar joints, natural patterns spontaneously appear in many complex geophysical settings. Here, we investigate…”
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A field‐based parameterization of wind flow recovery in the lee of dryland plants by Mayaud, Jerome R., Wiggs, Giles F.S., Bailey, Richard M.

“…Wind erosion is a key component of land degradation in vulnerable dryland regions. Despite a wealth of studies investigating the impact of vegetation and…”
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Desert dune processes and dynamics by Wiggs, Giles F.S.

“…This article reviews the advances made and problems encountered in the measurement, modelling and understanding of desert dune dynamics and processes in the…”
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A field study of mean and turbulent flow characteristics upwind, over and downwind of barchan dunes by Baddock, Matthew C., Wiggs, Giles F. S., Livingstone, Ian

“…ABSTRACT Field‐measured patterns of mean velocity and turbulent airflow are reported for isolated barchan dunes. Turbulence was sampled using a high frequency…”
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Remobilization of southern African desert dune systems by twenty-first century global warming by Wiggs, Giles F. S, Knight, Melanie, Thomas, David S. G

“…Although desert dunes cover 5 per cent of the global land surface and 30 per cent of Africa, the potential impacts of twenty-first century global warming on…”
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