TY - JOUR
T1 - Numerical simulation of landscape evolution and water run-off on digital elevation models obtained from Pléiades
AU - CHEN, Alex
AU - DARBON, Jérôme
AU - DE FRANCHIS, Carlo
AU - FAECIOLO, Gabriele
AU - MEINHARDT, Enric
AU - MICHEL, Julien
AU - MOREL, Jean-Michel
PY - 2015/2/4
Y1 - 2015/2/4
N2 - This paper illustrates how the main physical laws proposed in landscape evolution (LEMs) can be modeled by a system of three partial differential equations governing water run-off, stream incision, hill slope evolution and sedimentation. Several numerical experiments on high resolution digital elevation models (DEMs) obtained from image stereo pairs of the satellite Pléiades illustrate its potential to simulate the fine structure of the river network, and to understand the landscape morphology and its causes. They also permit to simulate plausible evolutions. The experiments on DEMs of the same site (La Réunion) are made at three different resolutions: the SRTM resolution (90 m), and then 12 m and 4 m on DEMs derived from several Pléiades pairs of the same site. The experiments show that the water run-off simulation critically depends on the DEM resolution. This justifies the use of high resolution DEMs like those that can now be produced from Pléiades pairs or triplets.
AB - This paper illustrates how the main physical laws proposed in landscape evolution (LEMs) can be modeled by a system of three partial differential equations governing water run-off, stream incision, hill slope evolution and sedimentation. Several numerical experiments on high resolution digital elevation models (DEMs) obtained from image stereo pairs of the satellite Pléiades illustrate its potential to simulate the fine structure of the river network, and to understand the landscape morphology and its causes. They also permit to simulate plausible evolutions. The experiments on DEMs of the same site (La Réunion) are made at three different resolutions: the SRTM resolution (90 m), and then 12 m and 4 m on DEMs derived from several Pléiades pairs of the same site. The experiments show that the water run-off simulation critically depends on the DEM resolution. This justifies the use of high resolution DEMs like those that can now be produced from Pléiades pairs or triplets.
KW - Conservation laws
KW - Detachment-limited and transport-limited erosion
KW - Landscape evolution model
KW - Partial differential equations
KW - Pléiades stereopairs
KW - River networks
KW - Stream incision law
UR - https://www.scopus.com/pages/publications/84925242407
U2 - 10.52638/rfpt.2015.135
DO - 10.52638/rfpt.2015.135
M3 - Journal Article (refereed)
AN - SCOPUS:84925242407
SN - 1768-9791
SP - 117
EP - 124
JO - Revue Francaise de Photogrammetrie et de Teledetection
JF - Revue Francaise de Photogrammetrie et de Teledetection
IS - 209
ER -