CECOAL   02625
CENTRO DE ECOLOGIA APLICADA DEL LITORAL
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Morphodynamic modelling of bars in large and small rivers: what constitutes sufficient model complexity?
Autor/es:
NICHOLAS, A.; SANDBACH, S.; AMSLER, M.; ASHWORTH, P.; BEST, J.; HARDY, R,; LANE, S.; ORFEO, O.; PARSONS, D.; REESINK, A.; SMITH G, SAMBROOK; SZUPIANY, R,
Lugar:
Durham University, UK
Reunión:
Congreso; British Society for Geomorphology (BSG) Annual Conference; 2009
Institución organizadora:
Durham University, UK
Resumen:
Recent research has highlighted the advantages of using simple (reduced-complexity) models to simulate river processes and evolution. However, there have been few attempts to evaluate the realism of such models in the context of either simulated channel morphology or its temporal evolution. Furthermore, a number of studies call into question whether such models can adequately capture the fundamentals of fluvial process-form interactions. We seek to address this question by developing a new reduced-complexity model of river morphodynamics and applying it at two radically different scales: First, in laboratory-scale channels, to examine the fundamental characteristics of free and forced bars; and second, in one of the World’s largest sand-bed rivers, the multi-thread Rio Paraná, Argentina, to investigate the relationships between process, form and bar alluvial architecture. Our results elucidate what constitutes ‘suffient complexity’ in distributed morphodynamic modelling and demonstrate that even simple models can capture the morphology, dynamics and sedimentology of alluvial bars.