Joint influence of river stream, water level and wind waves on the height of sand bar in a river mouth

TY - JOUR

T1 - Joint influence of river stream, water level and wind waves on the height of sand bar in a river mouth

AU - Laanearu, J.

AU - Koppel, T.

AU - Soomere, T.

AU - Davies, P.A.

N1 - Copyright 2008 Elsevier B.V., All rights reserved.

PY - 2007/1/1

Y1 - 2007/1/1

N2 - The hydraulics theory and wind-wave modelling are used to model annual changes of a threshold (sand bar) height at the mouth of the Narva River in 2002. The changes in the threshold height are attributed to two mechanisms: the cross-shore sediment transport driven by the river flow that erodes the obstacle and the long-shore transport forced by waves that increases the threshold height. It is shown that the flow stratification in the river mouth switches between one- and two-layer modes in different seasons, depending on variations of water level, river discharge and wave activity.

AB - The hydraulics theory and wind-wave modelling are used to model annual changes of a threshold (sand bar) height at the mouth of the Narva River in 2002. The changes in the threshold height are attributed to two mechanisms: the cross-shore sediment transport driven by the river flow that erodes the obstacle and the long-shore transport forced by waves that increases the threshold height. It is shown that the flow stratification in the river mouth switches between one- and two-layer modes in different seasons, depending on variations of water level, river discharge and wave activity.

UR - https://www.scopus.com/pages/publications/34547301430

M3 - Article

AN - SCOPUS:34547301430

SN - 0029-1277

VL - 38

SP - 287

EP - 302

JO - Nordic Hydrology

JF - Nordic Hydrology

IS - 3

ER -