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    12-Aug-2025
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Exercise 1: Exploring the volcano - continued
 
 
 
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The 4-5-3 combination with two IR bands highlights details not seen with previous combinations. Vegetation types can be distinguished and are displayed in shades of orange/brown/green, urban areas in shades of light purple, water is dark and can be delineated from land very well, and the volcanic plume disappears.

Credits: USGS
 
 
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The 7-4-2 FCC band provides a natural appearance: healthy vegetation is bright green, grassland is green, soils have multiple colours, bare soil is pink and sparse vegetation is orange. Fires would appear red.

Credits: USGS
 


Etna
Introduction
Change Detection and Hazard Assessment
Worksheet introductionExercise 1: Exploring the volcanoExercise 2 : Visual interpretation using terrestrial photographsExercise 3: Lava detection: crisis images and mapsExercise 4: Hazard assessment: GIS can help!
Eduspace - Download
Etna_Landsat_GIS.zip
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