Summary:
- Satellite images can detect subtle changes in the color of vegetation around volcanoes, which can indicate when a volcano is about to erupt.
- Healthy, green vegetation around a volcano typically indicates the volcano is not about to erupt. However, as a volcano becomes more active, the vegetation around it starts to turn a brighter, more vibrant green.
- This change in vegetation color is caused by the increased release of volcanic gases, like carbon dioxide and sulfur dioxide, which can stimulate plant growth in the short term before the eruption occurs.