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ERTS: A multispectral image analysis contribution for the geomorphological evaluation of southern Maracaibo Lake BasinMultispectral analysis of ERTS-A images at scales of 1:1,000,000 and 1:500,000 has been conducted with conventional photointerpretation methods. Specific methods have been developed for the geomorphological analysis of southern Maracaibo Lake Basin which comprises part of the Venezuelan Andean Range, Perija Range, the Tachira gap and the Southern part of the Maracaibo Lake depression. A steplike analysis was conducted to separate macroforms, landscapes and relief units as well as drainage patterns and tectonic features, which permitted the delineation of tectonic provinces, stratigraphic units, geomorphologic units and geomorphologic positions. The geomorphologic synthesis obtained compares favorably with conventional analysis made on this area for accuracy of 1:100,000 scale, and in some features with details obtained through conventional analysis for accuracy of 1:15,000 and field work. Geomorphological units in the mountains were identified according to changes in tone, texture, forms orientation of interfluves and tectonic characteristics which control interfluvial disimetrics.
Document ID
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Salas, F.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Cabello, O.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Alarcon, F.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Ferrer, C.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 7, 2013
Publication Date
January 1, 1974
Publication Information
Publication: 3d ERTS-1 Symp., Vol. 1, Sect. A
Subject Category
Report/Patent Number
Accession Number
Distribution Limits
Work of the US Gov. Public Use Permitted.
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