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Broad-scale mapping of temporary wetlands in arid Australia

journal contribution
posted on 2004-01-01, 00:00 authored by David RoshierDavid Roshier, R Rumbachs
We describe a robust methodology to detect and estimate the size of temporary wetlands using AVHRR satellite data within large areas (106 km2) of the arid zone. The methodology uses spectral matching and exclusion of salt surfaces to discriminate between water and non-water surfaces. The status of 115 lakes was used to evaluate the methodology. A classification accuracy of 98% was achieved for wetlands >120 ha, with accuracy of area estimates varying with the size and shape of individual lakes. Spectral matching of AVHRR data has methodological and cost advantages over the use of higher spatial resolution data for understanding changes in the distribution of water at broad scales.

History

Journal

Journal of arid environments

Volume

56

Issue

2

Pagination

249 - 263

Publisher

Academia Press

Location

London, England

ISSN

0140-1963

eISSN

1095-922X

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

Copyright notice

2003, Elsevier Science

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