| Summary: | Method of extracting information about land surface temperatures have
been carried out and applied to specific purpose. In geographic, information
extraction temperature is usually done for pure research in the field of remote
sensing and integration with Geographic Information System to see the
anomalous heat in the earth surface. Geothermal studies using Landsat imagery is
still not ubiquitous. Most of the preliminary surveys in geothermal exploration is
still using terrestrial approach to determine potential areas of geothermal. This
study aimed to determine the ability of the thermal channel on Landsat TM
imagery to identify the distribution of geothermal in Ngebel and also to determine
the appearance of objects associated with the surface geology geothermal system,
among other geological structures, lithologies, and geothermal sites based on
digital image processing of Landsat TM.
Location of the study focused on temperature appear prominently on the
image processing results information extraction temperature and geological
interpretation of a rock unit and structures of geology. Digital image processing
performed include contrast enhancement, filtering, composite image and
information extraction temperature.
The results of this research indicate that the extraction of temperature
information band 6 is present the appearance of the surface temperature in
Ngebel and it also present the appearance of geothermal manifestations. Landsat
TM images were processed using digital image processing to recognize the
appearance of the objects surface geology well. Distribution of geothermal
potential in Ngebel as dots for potential geothermal energy.The existence of
geological structures controlling the appearance of the surface geothermal
manifestations.
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