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Latest Types of volcanic eruptions Stories

Tree Rings May Underestimate Climate Response To Volcanic Eruptions
2012-02-06 05:45:55

Some climate cooling caused by past volcanic eruptions may not be evident in tree-ring reconstructions of temperature change because large enough temperature drops lead to greatly shortened or even absent growing seasons, according to climate researchers, who compared tree-ring temperature reconstructions with model simulations of past temperature changes. "We know these tree rings capture most temperature changes quite well," said Michael Mann, professor of meteorology and geosciences and...

Studies Suggest Volcanic Eruptions Can Be Predicted
2012-02-03 06:01:44

New research suggests that eruptions at some of Earth's largest volcanoes could be predicted decades before the event actually occurs, potentially making it easier for experts to monitor danger zones and conduct pre-emptive evacuations to keep residents out of harm's way. In one study, published Thursday in the journal Nature, scientists investigate "caldera-forming volcanic eruptions," or eruptions that discharge such massive amount of magma that it can create a large depression in the...

Warning Level For Alaskan Volcano Raised
2012-02-01 15:22:52

The Alaska Volcano Observatory raised a warning level for a remote Alaskan volcano on Tuesday, indicating a possible eruption. The center elevated the alert status for Cleveland Volcano after a new lava dome was spotted in the summit crater.  Officials said the dome was about 130 feet in diameter as of Monday. The volcano is a 5,675-foot peak on an uninhabited island, 940 miles southwest of Anchorage, Alaska. Authorities say sudden eruptions could occur at any time, and ash...

Death Valley Crater May Have Future Big Bang Potential
2012-01-24 10:22:17

In California's Death Valley, death is looking just a bit closer. Geologists have determined that the half-mile-wide Ubehebe Crater, formed by a prehistoric volcanic explosion, was created far more recently than previously thought–and that conditions for a sequel may exist today. Up to now, geologists were vague on the age of the 600-foot deep crater, which formed when a rising plume of magma hit a pocket of underground water, creating an explosion. The most common estimate was about...

2012-01-19 13:35:40

Supervolcanoes are one of nature's most destructive forces. In a matter of hours, an eruption from a supervolcano can force thousands of cubic meters of molten rock above ground, and scar landscapes with massive calderas and craters. These catastrophic eruptions have a global impact, and yet scientists still do not fully understand them. Today, a team of scientists studying Bolivia's Uturuncu volcano is trying to shed some light on how supervolcanoes can become so powerful. Uturuncu,...

Image 1 - NASA Radar To Study Hawaii's Most Active Volcano
2012-01-10 10:28:43

An airborne radar developed by NASA's Jet Propulsion Laboratory, Pasadena, Calif., has returned to Hawaii to continue its study of Kilauea volcano, Hawaii's current most active volcano. The Uninhabited Aerial Vehicle Synthetic Aperture Radar, or UAVSAR, mounted in a pod under NASA's G-III research aircraft from NASA's Dryden Flight Research Center, Edwards, Calif., returned to Hawaii's Big Island on Jan. 7. The one-week airborne campaign will help scientists better understand processes...

111947672
2011-12-30 10:08:32

Satellite imagery is showing Alaska´s Cleveland Volcano spewing ash 15,000 feet into the air from uninhabited Chuginadak Island about 940 miles southwest of Anchorage, USA Today is reporting. “It´s not expected to cause a disruption to big international air carriers,” U.S. Geological Survey (USGS) scientist-in-charge John Power said, who went on to call the event a “small explosion”. Air carriers in the region are showing a bit more concern, “any...

135083714
2011-12-05 09:41:15

An undersea volcanic eruption that has been ongoing in the Atlantic Ocean south of the Canaries for more than a month now could be creating either a new island or an additional territory to the southern coast of El Hierro, said scientists studying the eruptions. For more than a month, burning lava and gases have been spewing up from the sea floor three miles south of El Hierro, the smallest of the seven Canary Islands. And on Tenerife, the most populous of the group of islands, 60 miles...

Image 1 - NASA: No Evidence Of 2012 Supervolcano
2011-11-15 11:46:51

NASA said on Tuesday that there is no evidence of a massive supervolcano erupting in 2012, despite what some may believe. A supervolcano refers to an explosive volcanic eruption that eject about ten thousand times the quantity of magma and ash that Mount St. Helens expelled in 1980. NASA said Earth's surface has preserved clues of many massive supervolcanoes through hollowed-out calderas-craters that can be as big as 60 miles across after a volcano collapses from emptying out its entire...

Undersea Volcano Forming New Canary Island
2011-11-12 06:25:39

A new Canary Island is rising to the surface before our very eyes, and the first images of the infant volcano that is slowly coming up to the surface in the Spanish archipelago emerged on Friday. According to the Daily Mail, "Magma off the Canary Island of El Hierro has been spewing 20 meters high as the sea boils with a smell of sulfur“¦ As it grows and gets closer to the surface, more and more debris such as stones start to shoot out of the volcano which, until now, has only...


Latest Types of volcanic eruptions 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...

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