Data/hora: 17/06/2024 01:23:23

Provedor de dados: | 5
País: | France
Título: | Potential of UAVs for Monitoring Mudflat Morphodynamics (Application to the Seine Estuary, France)
Autores: | Jaud, Marion; Grasso, Florent; Le Dantec, Nicolas; Verney, Romaric; Delacourt, Christophe; Ammann, Jerome; Deloffre, Julien; Grandjean, Philippe.
Data: | 2016-04
Ano: | 2016
Palavras-chave: | Coastal monitoring; Unmanned Aerial Vehicle; Photogrammetry; Estuary; Mudflat areas; Morphological features.
Resumo: | Intertidal mudflats play a critical role in estuarine exchange, connecting marine and continental supplies of nutrients and sediments. However, their complex morphodynamics, associated with a wide range of physical and biological processes, are still poorly understood and require further field investigation. In addition, mudflats are challenging areas for Structure-from-Motion (SfM) photogrammetric surveys. Indeed, the mudflats generally hold back residual tidal water, which can make stereo restitution particularly difficult because of poor correlations or sun-glint effects. This study aims to show the potential of light UAVs (Unmanned Aerial Vehicles) for monitoring sedimentary hydrodynamics at different spatial scales in a silty estuary. For each UAV mission an orthophotograph and a Digital Elevation Model (DEM) are computed. From repeated surveys the diachronic evolution of the area can be observed via DEM differencing. Considering the ground texture in such a context, the stereo restitution process is made possible because of the high spatial resolution of the UAV photographs. Providing a synoptic view as well as high spatial resolution (less than 4 cm), the UAV dataset enables multi-scale approaches from the study of large areas to the morphodynamics of smaller-scale sedimentary structures and the morphodynamics impact of plant ground cover.
Tipo: | Text
Idioma: | Inglês

Identificador:

http://archimer.ifremer.fr/doc/00326/43721/43167.pdf

DOI:10.3390/ijgi5040050

http://archimer.ifremer.fr/doc/00326/43721/

Editor: | Mdpi Ag
Relação: | info:eu-repo/grantAgreement/EC/FP7/318787/EU//IQMULUS
Formato: | application/pdf
Fonte: | Isprs International Journal Of Geo-information (2220-9964) (Mdpi Ag), 2016-04 , Vol. 5 , N. 4 , P. -

Fonte:

2016 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).

info:eu-repo/semantics/openAccess

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