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Hyperspectrale vliegtuigopnamen strand Vlaamse kust, geïntegreerd met LIDAR
Contact: Deronde, Bart

Beschrijving
Airborne hyperspectral data and airborne laserscan or LIDAR data were applied to analyse the sediment transport and the beach morphodynamics along the Belgian shoreline. Between 2000 and 2004, four airborne acquisitions were performed with both types of sensor. The hyperspectral data were classified into seven sand type classes following a supervised classification approach, in which feature selection served to reduce the number of bands in the hyperspectral data. meer

The seven classes allowed us to analyse the spatial dynamics of specific sediment volumes. The technique made it possible to distinguish the sand used for berm replenishment works or for beach nourishments from the sand naturally found on the backshore and the foreshore. Subtracting sequential DTMs (digital terrain models) resulted in height difference maps indicating the erosion and accretion zones. The combination of both data types, hyperspectral data and LIDAR data, provides a powerful tool, suited to analyse the dynamics of sandy shorelines. The technique was demonstrated on three sites along the Belgian shoreline: Koksijde, located on the West Coast and characterized by wide accretional beaches, influenced by dry berm replenishment works and the construction of groins; Zeebrugge, on the Middle Coast, where a beach nourishment was executed one year before the acquisitions started and where the dams of the harbour of Zeebrugge are responsible for the formation of a large accretional beach, and Knokke-Heist, located on the East Coast and characterized by narrow, locally reflective, beaches, heavily influenced by nourishment activities. The methodology applied allowed retrieval of the main sediment transport directions as well as the amount of sediment transported. It proved to be specifically suited to follow up the redistribution and the re-sorting of the fill in beach nourishment areas [Source: Deronde, B.; Houthuys, R.; Henriet, J.-P.; Van Lancker, V. (2008). Monitoring of the sediment dynamics along a sandy shoreline by means of airborne hyperspectral remote sensing and LIDAR: a case study in Belgium. Earth Surf. Process. Landforms 33(2): 280-294; dx.doi.org/10.1002/esp.1545].

Scope
Thema's:
Fysisch > Optische metingen, Geografie
Kernwoorden:
Marien, Aardobservatie, Airborne, Hyperspectrale foto's, Orthobeeldvorming, Remote sensing, ANE, België, Belgische kust

Geografische spreiding
ANE, België, Belgische kust [Marine Regions]

Spreiding in de tijd
2000 - 2002
2004

Parameters
Sedimentatie/erosie Methode
Sedimentatie/erosie: LIDAR
Sedimentatie/erosie: AISA EAGLE

Bijdrage door
Vlaamse overheid; Beleidsdomein Economie, Wetenschap en Innovatie; Vlaamse Instelling voor Technologisch Onderzoek (VITO), meerdata eigenaar

Publicatie
Gebaseerd op deze dataset
Deronde, B. et al. (2008). Monitoring of the sediment dynamics along a sandy shoreline by means of airborne hyperspectral remote sensing and LIDAR: a case study in Belgium. Earth Surf. Process. Landforms 33(2): 280-294. dx.doi.org/10.1002/esp.1545, meer
Deronde, B. et al. (2008). Sediment facies classification of a sandy shoreline by means of airborne imaging spectroscopy. Int. J. Remote Sens. 29(15): 4463-4477. https://dx.doi.org/10.1080/01431160801891804, meer
Deronde, B. (2007). The sediment dynamics along the Belgian shoreline, studied with airborne imaging spectroscopy and LIDAR. PhD Thesis. Universiteit Gent: Gent. 204 pp., meer

Data type: Kaarten/Geografische files
Metadatarecord aangemaakt: 2009-02-24
Informatie laatst gewijzigd: 2009-03-02
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