He survived only by lying next to a thermal fumarole, scalding one side of himself while freezing the other. |
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Surprisingly, Saunders suggests a start at the fumarole on the side of Chihsing Shan. |
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These areas are known as hydrothermal regions, fumarole fields, or solfatara fields. |
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There is evidence of volcanic activity in the crater itself, however, including a small cone, recent fumarole activity, and the fact that the lake remains unfrozen in winter. |
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The most typical signs of an impending eruption are shallow earthquakes, ground deformation, increased volcanic gas release, increased fumarole vigour and temperatures, and minor landslides and rockfalls. |
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Fumarole, vent in the Earth's surface from which steam and volcanic gases are emitted. |
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Fumarole temperatures are normally monitored in the field with thermocouples, and water samples from hotsprings are taken for analysis to look for sudden changes in chemistry. |
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