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(Article of periodic en Anglais - 2012)

Document title

Remote measurement of river morphology via fusion of LiDAR topography and spectrally based bathymetry

Authors(s) and Affiliation(s)

LEGLEITER C.J. (1) ;
(1) Dep. of Geography, Univ. of Wyoming, Laramie, ETATS-UNIS

Abstract

This study was conducted along Soda Butte Creek and the Lamar River, two gravel-bed rivers draining the northeastern corner of Yellowstone National Park, USA. The AA. developed and evaluated a hybrid approach to remote measurement of river morphology that combines LiDAR topography with spectrally based bathymetry. Water surface elevations extracted from the LiDAR along the water's edge were used to produce a continuous water surface that preserved along-channel variations in slope. Subtracting local flow depths from this surface yielded estimates of the bed elevation that were then combined with LiDAR topography for exposed areas to create a composite representation of the riverine terrain. The accuracy of this terrain model was assessed via comparison with detailed field surveys. A map of elevation residuals showed that the greatest errors were associated with underestimation of pool depths and failure to capture cross-stream differences in water surface elevation

Source

Article of periodic

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

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

Millesime : 2012, vol. 37, no5 [pp. 499-518]

Bibliographic references : 1 p.

Collation : 16 fig.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.2262

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2012
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