Print Email Facebook Twitter Seasonal variability in M2 and M4 tidal constituents and its implications for the coastal residual sediment transport Title Seasonal variability in M2 and M4 tidal constituents and its implications for the coastal residual sediment transport Author Gräwe, U. Burchard, H. Müller, M. Schuttelaars, H.M. Faculty Electrical Engineering, Mathematics and Computer Science Department Delft Institute of Applied Mathematics Date 2014-08-04 Abstract We use an observational data set of tidal gauges in the North Sea to investigate the annual cycle of the M2 and M4 amplitudes and phases. The sea surface elevation amplitude of the M2 can vary by 8–10% and the M4 amplitude by 12–30% over the course of the year, with larger amplitudes in summer. The annual phase variations are in the range of 3–15?. The reason for these variations is the thermal structure of the North Sea: a well-developed thermocline in summer and well-mixed water column during winter. The interaction of the M2 and M4 tides is one of the main drivers of the residual sediment transport. Using an analytical model, the seasonal variability in residual sediment transport is estimated. This transport can vary by 10–50% over the course of the year. These variations are mainly related to the seasonal variability of the M2 and M4 amplitudes. Subject seasonal tidessediment transport To reference this document use: http://resolver.tudelft.nl/uuid:460c5002-1679-4134-ad6d-5c941fcff5d3 DOI https://doi.org/10.1002/2014GL060517 Publisher American Geophysical Union Embargo date 2015-02-04 ISSN 0094-8276 Source Geophysical Research Letters, 41 (15), 2014 Part of collection Institutional Repository Document type journal article Rights © 2014 American Geophysical Union Files PDF Schuttelaars_2014.pdf 980.92 KB Close viewer /islandora/object/uuid:460c5002-1679-4134-ad6d-5c941fcff5d3/datastream/OBJ/view