volcanoes

Icelandic volcanoes help researchers understand potential effects of eruptions

harminka — Mon, 14 Jul 2008 11:39:13 -0500

For the first time, researchers have taken a detailed look at what lies beneath all of Iceland’s volcanoes – and found a world far more complex than they ever imagined.

Active submarine volcanoes found near Fiji

harminka — Fri, 20 Jun 2008 06:21:03 -0500

Several huge active submarine volcanoes, spreading ridges and rift zones have been discovered northeast of Fiji by a team of Australian and American scientists aboard the Marine National Facility Research Vessel, Southern Surveyor.

Lavas from Hawaiian volcano contain fingerprint of planetary formation

harminka — Thu, 19 Jun 2008 15:13:30 -0500

Hikers visiting the Kilauea Iki crater in Hawaii today walk along a mostly flat surface of sparsely vegetated basalt. It looks like parking lot asphalt, but in November and December 1959, it emitted the orange glow of newly erupted lava.

Mystery of mass extinctions is no longer murky

harminka — Wed, 18 Jun 2008 08:14:54 -0500

If you are curious about Earth's periodic mass extinction events such as the sudden demise of the dinosaurs 65 million years ago, you might consider crashing asteroids and sky-darkening super volcanoes as culprits.

Researchers Uncover Secrets Of Deadly Supervolcanoes

ruzik_tuzik — Fri, 13 Jun 2008 10:07:24 -0500

Researchers from McGill University and the University of British Columbia (UBC) have simulated in the lab the process that can turn ordinary volcanic eruptions into so-called “supervolcanoes,” with potentially devastating worldwide impact.

Could geochemistry save lives during volcanic eruptions?

harminka — Thu, 05 Jun 2008 10:40:25 -0500

Could macro-scale chemical engineering be used to stop a volcanic lava flow in its tracks and save potentially thousands of lives and homes when the next eruption occurs? That's the question R.D. Schuiling of Geochem Research BV, based in The Netherlands, asks in the current issue of the Inderscience Publication, International Journal of Global Environmental Issues.

Chilean volcano captured blasting ash

harminka — Fri, 09 May 2008 07:24:58 -0500

Chile’s Chaiten Volcano is shown spewing ash and smoke (centre left of image) into the air for hundreds of km over Argentina’s Patagonia Plateau in this Envisat image acquired on 5 May 2008.

Chile's Chaiten volcano one of scores of active volcanoes in region

harminka — Thu, 08 May 2008 04:51:00 -0500

The Chaiten volcano now erupting in southern Chile is one of 200 to 300 volcanoes in the "Andean Arc" region of Chile, Peru, Ecuador and Columbia considered active by volcanologists, some of which lie in much more densely populated areas, said a University of Colorado at Boulder geologist who has studied Chaiten.

Dramatic developments at Kilauea Volcano

harminka — Fri, 28 Mar 2008 03:03:24 -0500

Explosive eruptions and noxious gas emissions at Kilauea Volcano in Hawaii this week have prompted scientists to work around the clock to understand what will happen next and how to keep the public out of harm’s way.

Colossal blasts from ancient volcanoes

harminka — Mon, 24 Mar 2008 02:30:02 -0500

When Mt. Pinatubo erupted in the Philippines, in June of 1991, it blasted enough gas and dust into the air to block some of the sunlight in the atmosphere, causing the Earth’s global climate to cool for a few years.

Bristol’s volcanoes and a Local Hero

seher — Sat, 08 Mar 2008 05:11:32 -0600

Did you know that there are extinct volcanoes near Bristol? A trip to visit them at Sand Point, Weston-Super-Mare, will be led by Professor Steve Sparks on 16 March.

Towards a better understanding of hot spot volcanism

harminka — Fri, 01 Feb 2008 12:42:30 -0600

Most of the Earth’s listed active volcanoes are located at the borders between two tectonic plates, where upsurge of magma from the mantle is facilitated. When these magmatic uprisings occur at a subduction zone, where one tectonic plate plunges under another, they give rise to volcanic massifs such as the Andes cordillera. Other volcanic chains are formed along oceanic ridges, submarine regions of ocean-floor extension.