Thermal satellite images show thermal radiation of Earth's surface and are useful in many fields. Their
advantage is that the data capture is non-contact, comprehensive and periodical, which enables
comparing the data through time. In this master thesis we observed cave entrances with thermal
satellite images. First part of thesis presents the programme Landsat and characteristics of the satellite
Landsat 8. Process of ground temperature determination is described in general and for different land
usage. Karst caves have special microclimate which is dependent of many factors. We defined the
characteristics of cave entrances that are important for this master thesis. Second part presents
practical work where we have chosen suitable cave entrances and thermal satellite images. With the
latter we observed temperatures of cave entrances compared to their surroundings and created two
perpendicular cross profiles. Because cave's climate change through the year, we processed summer
and winter images. The analysis of results shows that there at some cave entrances there is a
temperature anomaly. But that can also be related to the relief. At most cave entrances there are no
temperature differences which we expected.
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