Quantcast

Latest Volcano Stories

Atlantic Ocean Dances With The Sun And Volcanoes
2014-04-01 09:06:11

By Christina Troelsen, Aarhus University Natural fluctuations in the ocean temperature in the North Atlantic have a significant impact on the climate in the northern hemisphere. These fluctuations are the result of a complex dance between the forces of nature, but researchers at Aarhus University can now show that solar activity and the impact of volcanic eruptions have led this dance during the last two centuries. Imagine a ballroom in which two dancers apparently keep in time to...

Researchers Develop New Model Of Earth's Dynamic Interior
2014-03-31 14:24:13

[ Watch The Video: Researchers Develop New Model Of Earth’s Dynamic Interior ] Nikki Cassis, Arizona State University Seeking to better understand the composition of the lowermost part of Earth’s mantle, located nearly 2,900 kilometers (1,800 miles) below the surface, a team of Arizona State University researchers has developed new simulations that depict the dynamics of deep Earth. A paper published March 30 in Nature Geoscience reports the team’s findings, which could be...

Sunset Colors In Famous Paintings Used To Estimate Past Pollution Levels
2014-03-26 07:06:50

redOrbit Staff & Wire Reports - Your Universe Online The colors used by legendary artists of the past to depict a sunset could be used to estimate pollution levels in the atmosphere during bygone days, according to research published Tuesday in the open-access journal Atmospheric Chemistry and Physics. Lead author Christos Zerefos, a professor of atmospheric physics at the Academy of Athens in Greece, and his colleagues showed that paintings of famous artists reveal the ash and gas...

Newly exposed fault scarp
2014-03-25 08:07:09

GFZ GeoForschungsZentrum Potsdam, Helmholtz Centre Rift valleys are large depressions formed by tectonic stretching forces. Volcanoes often occur in rift valleys, within the rift itself or on the rift flanks as e.g. in East Africa. The magma responsible for this volcanism is formed in the upper mantle and ponds at the boundary between crust and mantle. For many years, the question of why volcanoes develop outside the rift zone in an apparently unexpected location offset by tens of...

Ice Age Flora And Fauna May Have Relied On Volcanic Heat To Thrive
2014-03-12 05:43:40

redOrbit Staff & Wire Reports - Your Universe Online Several types of plants and animals were able to survive ice ages of the past thanks to the heat and steam produced by volcanoes, according to research appearing in a recent edition of the Proceedings of the National Academy of Sciences (PNAS). Dr. Ceridwen Fraser of the Australian National University, Dr. Aleks Terauds from the Australian Antarctic Division and their colleagues said that their research has helped solve a...

Magma Chamber Of Galapagos' Sierra Negra Volcano Imaged In 3D
2014-03-06 10:01:48

April Flowers for redOrbit.com - Your Universe Online Some of the most active volcanoes in the world can be found in the Galapagos Islands. These volcanoes are responsible for more than 50 eruptions in the last 200 years. Even with such activity, scientists knew far more about the history of finches, tortoises and iguanas on the islands than the volcanoes upon which these unusual fauna had evolved. A new study from the University of Rochester, published in the Journal of Geophysical...

Lava Floods Mars Ancient Plains
2014-03-06 09:30:21

ESA Two distinct volcanic eruptions have flooded this area of Daedalia Planum with lava, flowing around an elevated fragment of ancient terrain. The images were acquired by ESA’s Mars Express on 28 November 2013 towards the eastern boundary of the gigantic Tharsis Montes volcanic region, where the largest volcanoes on Mars are found. The lava flows seen in this image come from Arsia Mons, the southernmost volcano in the Tharsis complex, which lies around 1000 km to the northwest of...

Global Warming Cooled Down By Volcanic Eruptions
2014-02-25 04:32:25

[ Watch the Video: Global Warming Cooled By Volcanoes ] Lee Rannals for redOrbit.com - Your Universe Online Researchers at Lawrence Livermore National Laboratory report they have found that volcanic eruptions in the early part of the 21st century have cooled the planet. The total heat content of the ocean, along with global-mean temperatures at the surface of the planet and in the troposphere have shown relatively little warming since 1998. This “slow-down” has been the topic of...

Two Sources Of Helium Produced By Ancient Yellowstone Activity
2014-02-20 07:33:51

[ Watch the Video: Yellowstone Releasing Ancient Helium ] Lawrence LeBlond for redOrbit.com - Your Universe Online As one might expect, Yellowstone National Park’s hot springs, geysers and other hydrothermal vents release gases stored deep below the Earth, including carbon dioxide and methane. Another gas has also been discovered to be squeaking out of Yellowstone’s vents, and while it is a common gas released from volcanic rocks, in this region, most of it comes from a much...

Permian Mass Extinction May Have Happened In The Blink Of An Eye
2014-02-11 05:07:01

April Flowers for redOrbit.com - Your Universe Online Approximately 252 million years ago, the largest mass extinction event in the history of animal life on Earth occurred — wiping out more than 96 percent of marine species and 70 percent of terrestrial species. This included the largest insects known to have inhabited the planet. Scientists have explored many theories to explain the cause of the end-Permian extinction, as it came to be known. Those theories include an asteroid...


Latest Volcano Reference Libraries

Hualālai
2014-04-10 12:06:55

Hualālai is a dormant shield volcano that is located on the island of Hawaii and is one of five volcanoes that form the island. It reaches an elevation of 8,271 feet and is thought to have emerged from the sea about 300,000 years ago, making it the third youngest volcano on the island. Its shape is rough compared to younger volcanoes and it holds three rift zones that are covered with over one hundred cinder cones and spatter cones. Although it does not hold a caldera at its summit, it does...

Zubair Group
2014-04-10 10:08:46

Zubair Group, also known as Zubayr Group or Al Zubair Group, is a chain of volcanic islands belonging to Yemen that are located on top of a shield volcano in the Red Sea. Zubair Group The largest island, known as Zubair, is among the youngest islands, which also include Saba, Saddle, and Haycock. The shield volcano underneath the islands began a period of eruptions and eventually quieted down, followed by a period of explosive and effusive eruptions that formed the islands that are present...

Kohala
2014-04-10 10:03:58

Kohala is an extinct shield volcano that is located on the island of Hawaii and reaches an elevation of 5,480 feet. It is one of five volcanoes that comprise the island of Hawaii and is thought to be about one million years old, although it only emerged from the sea about 500,000 years ago. Because its last eruption is thought to have occurred about 120,000 years ago, based on studies conducted on hardened lava flows, this volcano is not thought to pose a threat to inhabitants on the island....

Askja
2014-04-09 16:13:20

Askja is an active stratovolcano that is located in the isolated central highlands in Iceland. It reaches an elevation of 4,974 feet and its name literally means caldera, or box, in the Icelandic language. The area can only be reached during a period of a few months and because it located in the rain shadow of the Vatnajökull glacier to the northeast, it only receives 17.7 inches of rain per year. One of Askja’s smaller craters holds a lake known as Öskjuvatn, which is often frozen over...

Santa María Volcano
2014-04-09 10:58:40

Santa María Volcano is an active stratovolcano that is located in Guatemala and is part of the Sierra Madre, a string of volcanoes that stretches across the western side of Guatemala. The volcanoes in this string were formed by subduction activity, when the Cocos Plate moved under the Caribbean Plate. An eruption in 1902 produced a crater that now holds a lava dome known as Santiaguito, which was created during another eruption in 1922. These domes hold active vents and in 1929, part of the...

More Articles (15 articles) »
Word of the Day
call-note
  • The call or cry of a bird or other animal to its mate or its young.
'Call-note' is newer than 'bird-call,' which originally referred to 'an instrument for imitating the note of birds' but now also refers to 'the song or cry of a bird.'
Related