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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CU-SIGETA | Centre universitaire SIG et Teledetection au Burkina Faso

These maps have also allowed us to measure that the distance travelled by the sediment is between m to m thus demonstrating the use of imagery for the evaluation of river management works.

For example, we discuss a study of morphological change following a sediment management program aiming to redress the courd scale sediment deficit resulting from the construction of dams. Earth Surface Processes and Landforms 22, Over m 3 were mechanically injected into the river. Annexe Abridged English version Remote sensing is increasingly used in cpurs to characterise river corridors. Validation of this model is shown in fig. Earth Surface Processes and Landforms 32, GIS and remote sensing analyses.

La dynamique temporelle des corridors fluviaux.

The example follows the progress of this sediment through a 5 km reach. Multitemporal data acquisitions have their own specific limitations which have resulted teledstection very few studies. Once again we use high-resolution imagery obtained from the Pixy UAS. Earth Surface Processes and Landforms 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, 20k. Remote sensing is increasingly used dd order to characterise river corridors. 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.

These field surveys confirm the teledetectioj of favourable conditions to the presence of woody debris fig. Agrandir Original png, 29k. Paper presented at the Braided Rivers Conference, Br.

Here we illustrate two key applications of high-resolution airborne data: Our objective is to use SPOT 5 imagery in order to identify origin and retention points for the entire catchment. Hydrological Processes Table des illustrations Titre Fig. This type of data has a markedly higher resolution, down to centimetric scales, and it is much easier to coordinate the acquisition of airborne data with field data.

Cours de télédétection spatiale

A quick look at a large river. Second, we show an example of grain-size teledetectkon. Hydrological Sciences Journal Given the resolution of Landsat data it is not possible to detect individual forest units. In order to assess antecedent structures, dendrochronological surveys were required. Satellite remote sensing data can only be successful if certain threshold conditions are met. Agrandir Original png, 86k.

This demonstrates an important downstream trend where incised, upstream, sectors are clearly distinct from the downstream, un-incised, sectors. This imagery shows well-defined, homogeneous grain-size patches present on the exposed gravel bars fig. This new high-resolution data is available and telwdetection suited to the characterisation of intra-fluvial landscapes.


Abridged English version

Gravel Bed Rivers 6. The main objective is to study sedimentation and eutrophication processes responsible for the infilling of oxbow lakes.

HunterBertrand Moulin et Mathieu Gagnage. This reach contains two injection sites: Tools in Fluvial Geomorphology.

Supervised classification was used to segment the SPOT 5 image in three classes: Agrandir Original png, k. Landsat 7 TM data is used to examine the impact of a series of hydropower dams on the growth rates of riparian vegetation. In general, small-scale river surfaces are characterised with airborne data.

This ground work was planned using QuickBird satellite data which has sufficiently high resolution to identify mature individual tree crowns. Deux exemples telsdetection ces propos.

CERSAT – Cours de télédétection spatiale

Despite teeledetection progress, few studies have applied satellite remote sensing to a detailed characterisation of fluvial forms owing to still insufficient spatial resolution. Cojrs, the threshold conditions can be met if we add additional data layers.

In order to offset this limitation, field surveys were conducted in order to localise woody debris. Indeed, sensor resolutions are improving markedly thus allowing for narrower channels to be imaged and acquisition frequencies for airborne methods have also improved thus allowing for multi-annual surveys.