Title :
A deformation analysis of a dynamic estuary using two-weekly MBES surveying
Author :
Pluymaekers, Steven ; Lindenbergh, Roderik ; Simons, Dick ; De Ronde, John
Author_Institution :
Delft Univ. of Technol., Delft
Abstract :
A method is introduced and tested to analyze changes in depth and subaqueous dune parameter values in the complex topography of a multichannel estuary system. Periodic bedforms as represented by multibeam echo sounding (MBES) data are first separated from the raw topography in a filtering procedure. Then dune parameter class maps are determined from the bedform component of the data. These division in classes enables a segmentation of the area in regions of similar morphological behavior. The method is demonstrated on a time series of 17 two-weekly MBES data sets representing the estuary floor near Walsoorden in the Western Scheldt estuary. Two areas are analyzed in detail: a sand dump and its direct neighborhood and a more stable area, selected by the segmentation procedure.
Keywords :
acoustic measurement; acoustic signal processing; filtering theory; geomorphology; geophysical signal processing; geophysical techniques; sand; seafloor phenomena; topography (Earth); MBES survey; Walsoorden; Western Scheldt estuary; dune parameter class maps; dynamic estuary deformation analysis; estuarine depth changes; estuarine subaqueous dune parameter; estuary floor; filtering procedure; multibeam echo sounding; multichannel estuarine topography; periodic bedforms; sand dump; segmentation procedure; time series; Earth; Large-scale systems; Marine technology; Meteorology; Monitoring; Rivers; Sea measurements; Signal resolution; Space technology; Surfaces;
Conference_Titel :
OCEANS 2007 - Europe
Conference_Location :
Aberdeen
Print_ISBN :
978-1-4244-0635-7
Electronic_ISBN :
978-1-4244-0635-7
DOI :
10.1109/OCEANSE.2007.4302305
