(Article of periodic en Anglais - 2011)

Document title

A comparison of GPS and lidar salt marsh DEMs

Authors(s) and Affiliation(s)

CHASSEREAU J.E. (1) ; BELL J.M. (1) ; TORRES R. (1) ;
(1) Dep. of Earth and Ocean Science, Univ. South Carolina, Columbia, ETATS-UNIS


Digital elevation models (DEMs) were compared to characterize how well airborne lidar (light detection and ranging) data depict the microtopography of a salt marsh. 72,000 GPS points and 700,000 lidar points from a 1 km2 salt marsh island were linearly interpolated using identical DEM configurations. Spatial arrangement of difference values reveal that lidar performed best on the marsh platform, and poorly along tidal creeks and creek heads. These observations indicate that lidar appears to be a robust tool for mapping intertidal landscapes. However, lidar DEMs may not adequately resolve the microtopographic variations of a salt marsh, and for research questions that require accurate depiction of small-scale tidal creek networks and subtle terrain features lidar data should be augmented with other information


Article of periodic

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

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

Millesime : 2011, vol. 36, no13 [pp. 1770-1775]

Bibliographic references : 27 ref.

Collation : 3 fig., 1 tabl.



INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.2199

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