TY - JOUR

T1 - Coastal Morphodynamics at Skallingen, SW Denmark

T2 - High Energy Conditions

AU - Aagaard, Troels

AU - Nielsen, Jørgen

AU - Davidson-Arnott, Robin

AU - Greenwood, Brian

AU - Nielsen, Niels

PY - 1998/1/1

Y1 - 1998/1/1

N2 - The present paper discusses some preliminary results from a field experiment on sediment transport and morphological change on a beach subjected to storm surge activity. The data were collected at the barrier spit of Skallingen during October/November 1996. This period was characterized by a succession of storms which resulted in high water and wave energy levels, culminating in a storm surge per se. The beach and the dune ramp eroded; however, contrary to expectations, a subtidal bar migrated onshore and the intertidal swash bar appeared to display a cyclic behaviour dependent upon strong linkages between morphology and hydrodynamics. Morphological changes in the intertidal zone were primarily accomplished by mean currents with oscillatory motions playing a subordinate role. Longshore sediment transport measured during conditions with moderately strong winds blowing alongshore, was dominated by wave-induced currents with aeolian transport being a secondary contribution. Preliminary estimates suggest that some 30-35% of the sediment eroded from the beach and dunes is retained on the barrier through onshore aeolian transport and overwash activity.

AB - The present paper discusses some preliminary results from a field experiment on sediment transport and morphological change on a beach subjected to storm surge activity. The data were collected at the barrier spit of Skallingen during October/November 1996. This period was characterized by a succession of storms which resulted in high water and wave energy levels, culminating in a storm surge per se. The beach and the dune ramp eroded; however, contrary to expectations, a subtidal bar migrated onshore and the intertidal swash bar appeared to display a cyclic behaviour dependent upon strong linkages between morphology and hydrodynamics. Morphological changes in the intertidal zone were primarily accomplished by mean currents with oscillatory motions playing a subordinate role. Longshore sediment transport measured during conditions with moderately strong winds blowing alongshore, was dominated by wave-induced currents with aeolian transport being a secondary contribution. Preliminary estimates suggest that some 30-35% of the sediment eroded from the beach and dunes is retained on the barrier through onshore aeolian transport and overwash activity.

KW - Aeolian processes

KW - Sediment budget

KW - Sediment transport

KW - Storm surge

KW - Swash bars

M3 - Journal article

AN - SCOPUS:0032453796

VL - 98

SP - 20

EP - 30

JO - Geografisk Tidsskrift

JF - Geografisk Tidsskrift

SN - 0016-7223

ER -