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EVALUATION OF MULTITEMPORAL LANDSAT DATA FOR THE 
- DETECTION OF DYNAMIC AND MORE PERMANENT PEATURES 
by 
W. KIRCHHOF 
DFVLR, D8031 Wessling - Oberpfaffenhofen 
W. KRUCK 
R. MUHLFELD 
F. SCHOLZ 
BGR, D3000 Hannover 51, Postfach 510 153 
Abstract: 
The objective of this study has been the utilization of 
different image processing techniques for the evaluation 
of their applicability to earth scientific problems. 
From the selected ground scene TAHOUA 3 in the Republic 
of Niger, Landsat imagery from November 8, 1972, 
August 4, 1975, and October 15, 1975, has been available. 
For the semi-arid region under consideration, these data 
describe the phenology of the dry season, the beginning 
and the end of the wet period. 
Geometric image rectification with respect to the scene 
of August 4, 1975, enabled multitemporal analysis and 
processing. 
The detection and separation of dynamic features and more 
permanent aspects was emphasized to facilitate analysis 
and interpretation. 
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