Menu des cours. Calendrier des cours · Cours de Télédétection · Cours de SIG · Cours de GPS. Course. No course has been selected. Please selected a course . Lillesand T.M. and Kiefer R.W., Remote Sensing and lmage lnterpretation, 3rd edition, John Wiley & Sons, , p. Monget J.-M., Cours de teledetection. Les progrès techniques réalisés ces dernières années en télédétection laissent le domaine fluvial et notamment dans l’étude des petits et moyens cours d’eau.
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Tools in Fluvial Geomorphology.
Cours de télédétection spatiale
Agrandir Original png, 20k. Our objective is to understand the geographic and geomorphologic drivers of this distribution. Photogrammetric Record 16, As a result of these limitations, satellite remote sensing has only been applied to large rivers and their catchments Muller et al. These threshold conditions insure that the remotes sensing data if of sufficient spatial and temporal resolution to adequately characterise the river and the surrounding floodplain.
Agrandir Original png, 86k. Celle-ci permet le calcul de la semi-variance 2D. Landsat 7 TM data is used to examine the impact of a series of hydropower dams on the growth rates of riparian vegetation.
However, the SPOT 5 image cannot explicitly detect woody debris due to insufficient spatial resolution. Earth Surface Processes and Landforms 32, Therefore, this data clearly localises the impact of the dam on vegetation health.
CERSAT – Cours de télédétection spatiale
Furthermore, satellite data can now be complemented by catchment scale high resolution airborne orthorectified imagery often collected by national agencies such as the IGN. Second, we show an example of grain-size mapping. A quick look at a large river. Supervised classification was used to segment the SPOT 5 image in three classes: This type of data has a markedly higher resolution, down to centimetric scales, and it is much easier to coordinate the twledetection of airborne data with field data.
Following established methods Carbonneau et al. Agrandir Original png, 65k. Geomorphology 55, The aim of this paper is to illustrate progress in this field with a series of examples. Agrandir Original png, geledetection.
Data acquisition can now be planned on a multi-annual basis and acquired from a range of platforms such as standard survey aircraft, helicopters, ultralight aircraft or unmanned aerial vehicles UAVs. The teledeyection follows the progress of this sediment through a 5 km reach. Gravel Bed Rivers 6. Agrandir Original png, k.
For example, we discuss a study of morphological change following a sediment management program aiming to redress the reach scale sediment deficit resulting from the construction of dams.
This new high-resolution data is available and better suited to the characterisation of intra-fluvial vours.
We present three examples. This result illustrates the downstream structures for each dominant teledftection and allows us to identify two principal domains: Here we illustrate two key applications of high-resolution airborne data: The spatial resolution of the sensors must be adapted to the detection of river and flood plain features e. Deux exemples illustrent ces propos.
This reach contains two injection sites: In order to offset this limitation, field surveys were conducted in order to localise woody debris.
Earth Surface Processes and Landforms 22, This has allowed for a sediment budget of the reach to be established tab. Once again we use high-resolution imagery obtained from the Pixy UAS. In recent years, new satellite data has begun to offer data on metric e.