News articles tagged with 'volcanic'
Deep-sea volcanoes don't just produce lava flows, they also explode!
— 29 Mar 2011 16:19 | Geology and palaeontologyBetween 75 and 80 per cent of all volcanic activity on Earth takes place at deep-sea, mid-ocean ridges. Most of these volcanoes produce effusive lava flows rather than explosive eruptions,…
Oscillating 'plug' of magma causes tremors that forecast volcanic eruptions: UBC research
— 24 Feb 2011 18:47 | Geology and palaeontologyUniversity of British Columbia geophysicists are offering a new explanation for seismic tremors accompanying volcanic eruptions that could advance forecasting of explosive eruptions…
Geologists get unique and unexpected opportunity to study magma
— 17 Feb 2011 17:57 | Geology and palaeontologyGeologists drilling an exploratory geothermal well in 2009 in the Krafla volcano in Iceland encountered a problem they were simply unprepared for: magma (molten rock or lava underground)…
Researchers find smoking gun of world's biggest extinction
— 23 Jan 2011 19:47 | EnvironmentAbout 250 million years about 95 per cent of life was wiped out in the sea and 70 per cent on land. Researchers at the University of Calgary believe they have discovered evidence to…
Novel ocean-crust mechanism could affect world's carbon budget
— 16 Nov 2010 12:27 | EnvironmentThe Earth is constantly manufacturing new crust, spewing molten magma up along undersea ridges at the boundaries of tectonic plates. The process is critical to the planet's metabolism,…
Volcanoes have shifted Asian rainfall
— 3 Nov 2010 19:40 | EnvironmentScientists have long known that large volcanic explosions can affect the weather by spewing particles that block solar energy and cool the air. Some suspect that extended 'volcanic…
Mars volcanic deposit tells of warm and wet environment
— 31 Oct 2010 18:16 | AstronomyRoughly 3.5 billion years ago, the first epoch on Mars ended. The climate on the red planet then shifted dramatically from a relatively warm, wet period to one that was arid and cold.…
Research suggests volcanoes nixed Neanderthals
— 7 Oct 2010 16:30 | Geology and palaeontologyNew research suggests that climate change following massive volcanic eruptions drove Neanderthals to extinction and cleared the way for modern humans to thrive in Europe and Asia…
Mount Etna's mystery explained?
— 7 Oct 2010 15:33 | Geology and palaeontologyInternationally renowned geophysicist Dr Wouter Schellart has developed the first dynamic model to explain the mystery of the largest and most fascinating volcano in Europe, Mount Etna…
Pinpointing where volcanic eruptions could strike
— 27 Sep 2010 13:05 | Geology and palaeontologyA better way to pinpoint where volcanic eruptions are likely to occur has been produced by an international team of geophysicists…