New evidence suggests volcanoes caused biggest mass extinction ever

Mercury found in ancient rock around the world supports theory that eruptions caused ‘Great Dying’ 252 million years ago. From the University of Cincinnati: Researchers say mercury buried in ancient rock provides the strongest evidence yet that volcanoes caused the biggest mass extinction in the history of the Earth. The extinction 252 million years ago…

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Guess where the biggest volcanic eruption of 2018 was? Hint (not Hawaii)

There have been voluminous headlines, photos, and video describing eruptions on Hawaii’s Kilaueua in 2018, and while they were visually impressive, when it comes to potentially climate altering sulfur dioxide, those eruptions pale in comparison to another Pacific volcano. NASA Earth observatory writes: While Kilauea dominated headlines last year, the largest explosive eruption of 2018…

Revising the history of big, climate-altering volcanic eruptions

New method, co-developed at UMD, refines the 2,600-year history of large eruptions that inject planet-cooling particles into the stratosphere From the UNIVERSITY OF MARYLAND For all their destructive power, most volcanic eruptions are local events. Lava flows tend to reach only a few miles at most, while airborne ash and soot travel a little farther.…

Spot The Volcano, 1815 Edition

Guest Post by Willis Eschenbach It’s been a while since I played “Spot The Volcano”. The premise of the game is that the decrease in temperatures from volcanic eruptions is nowhere near as large as people claim. So I ask people to see if they can identify when a volcano erupted based on the temperature…

USGS issues first USA Volcano Threat Assessment in over a decade

18 volcanoes in the USA are classified as “very high threat”, many are in the Pacific Northwest. The United States has 161 young, active volcanoes within its borders. Since 1980, there have been 120 eruptions and 52 episodes of notable volcanic unrest at 44 U.S. volcanoes. The U.S. Geological Survey systematically assesses U.S. volcanoes considered to…

Krakatoa volcano stirs to life again

The volcanic island of Krakatau (previously called Krakatoa) is situated in the Sunda Strait between the islands of Java and Sumatra in the Indonesian province of Lampung. The name is also used for the surrounding island group comprising the remnants of a much larger island of three volcanic peaks which was obliterated in a cataclysmic 1883 eruption. In 1927, a new island, Anak Krakatau, or “Child of Krakatoa”, emerged from…

Iceland’s monster volcano charging up for eruption

The Katla volcano, hidden beneath the ice cap of Mýrdalsjökull glacier in Iceland, has historically erupted violently once every 40-80 years.  In-as-much as it’s last such eruption took place one hundred years ago, in 1918, Katla’s next eruption is long overdue. An eruption in Katla would dwarf the 2010 Eyjafjallajökull eruption, scientists have warned. A…

Has a new volcano formed in Hawaii?

Story by David Rothery Professor of Planetary Geosciences, The Open University Kilauea, the most active volcano on Hawaii, has been in continual eruption since 1983. It entered a new phase in early May when fractures along a rift on the eastern side of the volcano opened during a series of earthquakes – some of which became volcanic fissures…

Stacking Up Volcanoes

  Guest Post by Willis Eschenbach [See Update at end] As readers of my posts know, I’ve held for many years that there are a variety of emergent phenomena that regulate the earth’s temperature. See my posts The Thermostat Hypothesis and Emergent Climate Phenomena for an overview of my hypothesis. One of the predictions derivable…