Quantification of channel bed morphology in gravel-bed rivers using airborne multispectral imagery and aerial photography
✍ Scribed by Winterbottom, Sandra J. ;Gilvear, David J.
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 371 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0886-9375
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✦ Synopsis
The potential for mapping in-channel morphology within shallow gravel-bed rivers using airborne multispectral imagery and aerial photography is illustrated using a case study from the River Tummel, Scotland. The technique described relies on a good correlation between observed light re¯ectance levels from a water body and water depth. Measured water depths are regressed against re¯ectance levels derived from airborne multispectral imagery and black-and-white aerial photographs, to obtain equations that can be used for mapping channel bathymetry. The technique has a great deal of potential for wideranging applications, including detailed morphological surveys, assessing in-channel changes and mapping riverine habitats.