In the framework of the Raversijde Living Lab project, bathymetric measurements are carried out periodically to monitor the beach morphology. Profiles of the seafloor will be obtained pre- and post-storm as well vertical bottom changes and sediment concentration measurements will take place during the storms by a suspension meter.
Single and multibeam methods will be employed. Single beam surveys cover a 2 km alongshore and 500 m cross-shore zone, providing data for nautical purposes. Multibeam surveys, including an offshore one, enhance morphological understanding with a 2.6 km alongshore and 560 m cross-shore coverage. A comparison indicates that single beam profiles are representative of shoreface bathymetry, with some limitations around groynes. The study explores improving single beam DEMs by incorporating groyne geometry from multibeam surveys.
","EngDescr":null,"OrigAbstract":"In het kader van het Raversijde Living Lab-project worden periodiek bathymetrische metingen uitgevoerd om de morfologie van het strand te monitoren. Er worden profielen van de zeebodem vastgelegd vóór en na stormen, terwijl tijdens de stormen met behulp van een suspensiemeter ook verticale veranderingen in de bodem en sedimentconcentraties worden gemeten.
Er wordt gebruikgemaakt van enkel- en multibeam-methoden. Enkel-beam-metingen bestrijken een zone van 2 km langs de kust en 500 m dwars op de kust, en leveren gegevens op voor nautische doeleinden. Multibeam-metingen, waaronder een offshore-meting, vergroten het inzicht in de morfologie met een dekking van 2,6 km langs de kust en 560 m dwars op de kust. Uit een vergelijking blijkt dat enkelbundelprofielen representatief zijn voor de bathymetrie van het kustfront, met enkele beperkingen rond golfbrekers. De studie onderzoekt de verbetering van enkelbundel-DEM's door de geometrie van golfbrekers uit multibeam-metingen te integreren.
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