Stereophotogrammetry of archive data and topographic approaches to debris-flow torrent measurements : calculation of channel-sediment states and a partial sediment budget for Manival torrent (Isère, France)

Gully erosion in mountain areas : processes, measurement, modelling and regionalization

Auteurs :
VEYRAT-CHARVILLON, S.
MERNIER, M.
WAINWRIGHT, J.

Description :
This paper demonstrates the use of stereophotogrammetry on archival aerial photographs, with the application to the study of available sediment volume in torrents. First, a topographic methodology to estimate the potential sediment volume stored in the channel is presented. This sampling method was optimized with respect to the specific debris-flow torrent morphology. Secondly, measurements were made on the Manival torrent at 12 different dates from 1963 to 2000. Thirdly, partial sediment budgets and erosion-rate estimates for the same time period in the Manival torrent are discussed.


Type de document :
Congrès

Source :
Conférénce internationale Gully erosion in mountain areas : processes, measurement, modelling and regionalization, Digne, France, 2003-10, Earth surface processes and landforms, issn : 0197-9337, 2006, vol. 31, n°. 2, p. 201-219, nombre de pages : 19, Collation : Illustration, Références bibliographiques : 34 ref.

Date :
2006

Editeur :
Pays édition : Royaume-Uni, Chichester, Wiley