Proposed idea for monitoring the sign of volcanic eruption by using the optical frequency comb

Volcanic eruption is a natural disaster which causes many problems including deaths. Before happening the volcanic eruption, the temperature of the gas comes out from the fumaroles is increased. Thus, if the temperature of the gas can be monitored in advance, it may be possible to predict the abnormalities in that area. The possibility of volcanic eruption could be inspected by using the optical frequency comb technology monitoring the refractive index. The temperature of the gas that comes out from the fumaroles will be continuously monitored for investigating the possible risks of the eruption in near future by using the proposed optical comb method.