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Assessment of soil losses by ephemeral gully erosion using high-altitude (stereo) aerial photographs

Auteurs :
NACHTERGAELE, J.
POESEN, J.

Description :
The objective of this study is to explore in a critical way the potential of high-altitude (stereo) aerial photographs for the assessment of ephemeral gully erosion rates. On 28 May 1995, an intensive rainfall event occurred in central Belgium. Ephemeral gullies formed within an area of 218 ha were mapped and measured both in the field and by high-altitude aerial photos taken at the same time. Comparison of these 2 methods shows that if only one of the 2 surveying techniques had been used, only 75 per cent of the total ephemeral gully length would have been detected. So a correction factor is proposed.


Type de document :
Article de périodique

Source :
Earth surface processes and landforms, issn : 0197-9337, 1999, vol. 24, n°. 8, p. 693-706, Collation : Illustration, Références bibliographiques : 30 ref.

Date :
1999

Editeur :
Pays édition : Royaume-Uni, Chichester, Wiley

Langue :
Anglais
Droits :
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)