Volcanoes

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Oxygen-Free Oceans Wrought Changes on Early Earth

Geologists at the University of California, Riverside, have discovered chemical evidence that indicates Earth’s ancient oceans were not only oxygen-free, but also contained large quantities of hydrogen sulphide in some areas. “We are the first to show that ample hydrogen sulfide in the ocean was possible this early in Earth’s history,” said Timothy Lyons, a […]

January 11th

Hawaii Sitting Shallow Atop Magma

An Ohio State University honours undergraduate student has found that the Hawaiian Island volcani chain sits atop a single magma chamber which is much closer to the surface than was originally supposed. “Hawaii was already unique among volcanic systems, because it has such an extensive plumbing system, and the magma that erupts has a unique […]

December 14th

Icelandic Volcano was Restless before Eruption

A new research paper published in the latest issue of the journal Nature shows that in the months preceding the eruptions of the Icelandic volcano Eyjafjallajökull, it had been restless as a result of magma flowing beneath the volcano. “Several months of unrest preceded the eruptions, with magma moving around downstairs in the plumbing and […]

November 18th

No Eruption Imminent from Iceland Volcano

Geophysicists who have been monitoring the Grimsvotn volcano in Iceland have announced that floodwaters are receding and tremors are decreasing. This after fears just a few days ago that the country’s most active volcano could erupt soon. The lake and surrounding glacier had begun melting, with water levels having tripled according to Gunnar Sigurdsson of […]

November 8th

Indonesia Volcanoes and Tsunamis Wreaking Havoc

I wrote last week about the Mount Merapi Volcano in Indonesia shortly before it started erupting. Now that it has been erupting for about a week it has killed a few dozen people. This and a tsunami that has killed hundreds are generating quite the destruction and havoc in the 4th most populated country in the […]

November 3rd

Indonesia's Merapi Volcano to Erupt? Highest Alert Issued

“Indonesia has raised the alert for its most volatile volcano, Mount Merapi, to its highest level and warned villagers in threatened areas to move to safer ground,” BBC has just reported. The activity in the volcano has reportedly increased to a great degree over the past few days and local residents have been told to […]

October 25th

Narrowness of Ring of Fire Explained

Scientists have long wondered why the world’s most volcanic regions are thousands of kilometres long, but only a few tens of kilometres wide. One of the most obvious examples is the Ring of Fire, a ring of volcanoes that stretches from southernmost Chile, via Alaska and Japan, to New Zealand. Oxford University scientists have finally […]

October 13th

Scientists to View Impact of Icelandic Volcano on Ocean

An international team of researchers will visit the region of the North Atlantic Ocean affected by ash from the eruption of Eyjafjallajökull in an effort to determine the impact the volcano had on the ocean biology. Aboard the UK’s Royal Research Ship Discovery, the team will make their second cruise to study the region, the […]

July 15th

Volcanoes: The 'X Factor' in Climate Change

Apart from the major disruption in flight traffic and the economy, the Icelandic volcano eruption promises in the short-term to disrupt upper atmospheric circulation patterns and temperatures, with an additional impact due to sulfuric acid “nucleation” and subsequent acid rain. But the medium to long-term impacts of continuous, or increasing, volcanic eruptions is a matter of on-going scientific debate.

April 19th