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(Article of periodic en Anglais - 2013)

Document title

Measuring bluff erosion part 1 : terrestrial laser scanning methods for change detection

Authors(s) and Affiliation(s)

DAY S.S. (1) ; GRAN K.B. (2) ; BELMONT P. (3) ; WAWRZYNIEC T. (4) ;
(1) Dept. of Geosciences, North Dakota State Univ., Fargo, ETATS-UNIS
(2) Dep. of Geological Sciences, Univ. of Minnesota, Duluth, ETATS-UNIS
(3) Dept. of Watershed Sciences , Utah State Univ., Logan, ETATS-UNIS
(4) Dept. of Natural and Environmental Science, Western State College of Colorado, Gunnison, ETATS-UNIS

Abstract

This paper highlights challenges and limitations of using terrestrial laser scanning (TLS) for change detection on river banks and bluffs including the presence of vegetation, natural surface crenulations, and difficulties with creating benchmarks, and provides solutions developed to overcome these limitations. Results indicate that data processing algorithms for change detection can have a significant impact on the calculated erosion rates, with different methods producing results that can vary by over 100%. The most accurate change detection technique compares a point cloud to a triangulated irregular network (TIN) along a set of vectors that accommodate bluff curvature. This paper outlines a variety of methods used to measure bluff change via TLS and explains the accompanying error analysis that supports these methods

Source

Article of periodic

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

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

Millesime : 2013, vol. 38, no10 [pp. 1055-1067]

Bibliographic references : 1 p.

Collation : 8 fig., 4 tabl., 2 an.

Language

Anglais

INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.3353

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2014
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