Recent Examples of tornillo from the Web
The team — from Boise State University, Stanford, and the Instituto Geofísico of the Escuela Politécnica Nacional — suspect that these tornillos might be kicked off by small explosions or toots of gas at the bottom of the volcano.
These new sounds create a waveform that twists to a point like a screw — so the researchers called them tornillos, Spanish for screw.
Some other volcano news from this week’s GVP report: Colombia: The tornillos recorded at Galeras last week that prompted an elevation of the threat level to Orange, suggesting that an eruption was coming soon, stopped on January 30 with no eruption.
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Spanish Central: Translation of tornillo
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