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(Article of periodic en Anglais - 2009)

Document title

Bathymetric mapping by means of remote sensing : methods, accuracy and limitations

Authors(s) and Affiliation(s)

GAO J. (1) ;
(1) School of Geography, Geology and Environmental Science, Univ., Auckland, NOUVELLE-ZELANDE

Abstract

Remote sensing of bathymetry falls into 2 broad categories : non-imaging and imaging methods. The non-imaging method (as typified by LiDAR) is able to produce accurate bathymetric information over clear waters at a depth up to 70 m. However, this method is limited by the coarse bathymetric sampling interval and high cost. The imaging method can be implemented either analytically or empirically, or by a combination of both. Both implementations can produce fine-detailed bathymetric maps over extensive turbid coastal and inland lake waters quickly, even though concurrent depth samples are essential. The detectable depth is usually limited to 20 m. The accuracy of the retrieved bathymetry varies with water depth, with the accuracy substantially lower at a depth beyond 12 m. Other influential factors include water turbidity and bottom materials, as well as image properties

Source

Article of periodic

published at : Progress in physical geography / ISSN 0309-1333 / CODEN PPGEEC

Editor : Sage Publications, London - ROYAUME-UNI (1977)

Millesime : 2009, vol. 33, no1 [pp. 103-116]

Bibliographic references : 1,5 p

Collation : 3 fig., 1 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 14648 A

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1177/0309133309105657

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2009
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