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(Article of periodic en Anglais - 2010)

Document title

Quantification of braided river channel change using archival digital image analysis

Authors(s) and Affiliation(s)

LANE S.N. (1) ; WIDDISON P.E. (1) ; THOMAS R.E. (2) ; ASHWORTH P.J. (3) ; BEST J.L. (4) ; LUNT I.A. (5) ; SAMBROOK SMITH G.H. (6) ; SIMPSON C.J. (7) ;
(1) Inst. of Hazard and Risk Research and Dept. of Geography, Univ., Durham, ROYAUME-UNI
(2) USDA-ARS National Sedimentation Lab., MS, Oxford, ETATS-UNIS
(3) School of Environment and Technology, Univ., Brighton, ROYAUME-UNI
(4) Dep. of Geography and Geology and Ven Te Chow Hydrosystems Lab., Univ. of Illinois, Urbana, ETATS-UNIS
(5) StatOilHydro, Bergen, NORVEGE
(6) School of Geography, Earth and Environmental Sciences, Univ., Birmingham, ROYAUME-UNI
(7) Fulcrum Graphic Communications Inc., Vancouver, CANADA

Abstract

The AA. couple archival photogrammetric techniques with image processing methods and test these for quantification of sand-bed braided river dynamics, illustrated for a 500 m wide, 3 km long reach of the South Saskatchewan River, Canada. Digital photogrammetry was used to quantify dry areas and water edge elevations. A methodology was then used to calibrate the spectral signature of inundated areas by combining established two media digital photogrammetric methods and image matching. This allowed determination of detailed depth maps for inundated areas and, when combined with dry area data, creation of complete digital elevation models. Error propagation methods were used to determine the erosion and deposition depths detectable from sequential digital elevation models

Source

Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2010, vol. 35, no8 [pp. 971-985]

Bibliographic references : 56 ref.

Collation : 5 fig., 3 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.2015

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2011
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