TY - JOUR
T1 - Modelling aeolian sand transport and morphological development in two beach nourishment areas
AU - van der Wal, D.
PY - 2000/1/1
Y1 - 2000/1/1
N2 - The aeolian sand transport model SAFE and the air flow model HILL were applied to evaluate cross-shore changes at two nourished beaches and adjacent dunes and to identify the response of aeolian sand transport and morphology to several nourishment design parameters and fill characteristics. The main input of the model consisted of data on the sediment, tide and meteorological conditions, and of half-yearly measured characteristics of topography, vegetation and sand fences. The cross-shore profiles generated by SAFE-HILL were compared to measured cross-shore profiles. The patterns of erosion and deposition, and the morphological development corresponded. In general, the rates of aeolian sand transport were overestimated. The impact of parameters that are related to beach nourishment (namely grain size, adaptation length and beach topography) on profile development was evaluated. Grain size affected the aeolian sand transport rate of the foredunes, and therefore the morphology. Adaptation length, which is a measure of the distance over which sediment transport adapts to a new equilibrium condition, affected the topography of the beach in particular. The topography of a beach nourishment had limited impact on both aeolian sand transport rate and morphology.
AB - The aeolian sand transport model SAFE and the air flow model HILL were applied to evaluate cross-shore changes at two nourished beaches and adjacent dunes and to identify the response of aeolian sand transport and morphology to several nourishment design parameters and fill characteristics. The main input of the model consisted of data on the sediment, tide and meteorological conditions, and of half-yearly measured characteristics of topography, vegetation and sand fences. The cross-shore profiles generated by SAFE-HILL were compared to measured cross-shore profiles. The patterns of erosion and deposition, and the morphological development corresponded. In general, the rates of aeolian sand transport were overestimated. The impact of parameters that are related to beach nourishment (namely grain size, adaptation length and beach topography) on profile development was evaluated. Grain size affected the aeolian sand transport rate of the foredunes, and therefore the morphology. Adaptation length, which is a measure of the distance over which sediment transport adapts to a new equilibrium condition, affected the topography of the beach in particular. The topography of a beach nourishment had limited impact on both aeolian sand transport rate and morphology.
KW - Aeolian sand transport
KW - Air flow
KW - Beach nourishment
KW - Foredunes
KW - Modelling
KW - The Netherlands
KW - Topography
UR - http://www.scopus.com/inward/record.url?scp=0034010778&partnerID=8YFLogxK
U2 - 10.1002/(SICI)1096-9837(200001)25:1<77::AID-ESP49>3.0.CO;2-M
DO - 10.1002/(SICI)1096-9837(200001)25:1<77::AID-ESP49>3.0.CO;2-M
M3 - Article
AN - SCOPUS:0034010778
SN - 0197-9337
VL - 25
SP - 77
EP - 92
JO - Earth surface processes and landforms
JF - Earth surface processes and landforms
IS - 1
ER -