Accession Number : ADP001999

Title :   Impact of Hydrothermally Altered Soil on Vegetation as a Tool in Geothermal Exploration,

Corporate Author : UNIVERSIDAD NACIONAL AUTONOMA DE MEXICO MEXICO CITY INST DE GEOFISICA

Personal Author(s) : Camacho,S. ; Rio,L. del ; Sanchez,L. ; Gonzalez,J.

Report Date : JUN 1982

Pagination or Media Count : 9

Abstract : The spectral reflectance of vegetation over the Caldera of Los Humeros is used to locate potential geothermal areas. The ratio of Landsat band 7 to band 5 is found to be an excellent discriminant between anomalous and background trees. A maximum likelihood classification outlines the anomalous vegetation. This is coupled with a criterion to account for bare spot, mud ponds, fumaroles, and other surface manifestations. The result is an outline of the area with highest level of geothermal activity. (Author)

Descriptors :   *Vegetation, *Geothermy, Mexico, Soils, Modification, Aerial photography, Multiband spectral reconnaissance, Scientific satellites, Image processing

Distribution Statement : APPROVED FOR PUBLIC RELEASE