VINCENT REALMUTO, JPL-CALTECH / SCIENCE PHOTO LIBRARY VINCENT REALMUTO, JPL-CALTECH / SCIENCE PHOTO LIBRARY
False-colour thermal infrared image of Mount St.Helens, USA. This image was made by an aircraft-mounted Thermal Infrared Multispectral Scanner (TIMS). Pink and red areas denote the extent of volcanic ash deposition following the famous 1980 eruption. Yellow areas are regions where sparse vegetation has established through the ash. The small white spots at the centre of the crater are the sites of fumaroles, still venting hot gas from the volcano. The dark blue patch shows the presence of cloud.
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