This technology is used to examine how much Sulfur Dioxide is present around the volcanoes. These technology is used by vulcanologist, people who study volcanoes, and it usually predicts when the volcano will erupt. It was developed in the 1960's in Canada to examine, or predict, the occurrence of the volcanic eruption. COSPEC shows the amount of SO2, otherwise sulfur dioxide, by the change in colors. More SO2 present around the volcanoes, stronger the color intensity shown in the graphs produced by these technologies.
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