Volcano breath test promises eruption early warning

 作者:滕翥市     |      日期:2017-06-16 02:01:00
MORE than 500 million people live in the shadow of a volcano, but predicting an eruption can be tricky. Forecasts based on periodic gas sampling could be improved with the volcanic equivalent of a breath tester that picks up changes in the composition of gases spewing from its vent. Alton Horsfall and Nick Wright at Newcastle University, UK, have fashioned gas sensors from silicon carbide,