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Lasers to give early-warning of volcanic eruptions Laser-based instruments could soon become a convenient tool to warn scientists of impending volcanic eruptions according to research reported today on the Institute of Physics website Optics.org. Researchers in Italy have built an optical system for monitoring volcanic gases and have just reported the results of their first field tests. Livio Gianfrani and his colleagues from the Seconda Universita di Napoli constructed a portable spectrometer based around a 2 micron diode laser and used it to perform in-situ measurements of carbon dioxide gas emissions from the nearby Solfatara crater.
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