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Latest Types of volcanic eruptions Stories

Volcanic Super-Eruptions A Quicker Threat Than Previously Thought
2012-05-31 05:03:53

Lee Rannals for RedOrbit.com Volcanoes capable of super-eruptions that could be catastrophic for civilizations have short fuses, according to new research conducted at Vanderbilt University. Super-eruptions are more than 100 times the size of ordinary volcanic eruptions like Mount St. Helens. These types of eruptions spew out super-heated gas, ash and rock, and are capable of leveling entire continents. Researchers say that there is evidence of one super-eruption that took place in...

Crystal Composition Could Predict Volcanic Eruptions
2012-05-26 05:03:51

By studying crystals formed in volcanic rock, experts may be able to predict an impending eruption up to a year in advance, researchers from the University of Bristol have discovered. According to a Thursday press release from the university, Dr. Kate Saunders and her colleagues used forensic-style chemical analysis to link seismic observations of a 1980 eruption at Mount St. Helens to the growth of crystals within the large underground pool of liquid rock beneath the volcano known as the...

2012-05-16 22:41:53

The early April earthquake of magnitude 8.6 that shook Sumatra was a grim reminder of the devastating earthquakes and tsunami that killed tens of thousands of people in 2004 and 2005. Now a new study, funded by the National Science Foundation, shows that the residents of that region are at risk from yet another potentially deadly natural phenomenon — major volcanic eruptions. Researchers from Oregon State University working with colleagues in Indonesia have documented six major...

Scientists Observe Rapid Change In Underwater Volcano
2012-05-14 11:28:02

Lee Rannals for RedOrbit.com Researchers have been able to capture the rise and collapse of an underwater volcano in the Pacific Ocean for the first time. The team studying Monowai volcano near Tonga has recorded large changes in height of the volcano in just two weeks. The researchers gathered images by sonar on a ship, unveiling new details about the submarine mountains. There are as many as 32,000 underwater mountains that have been identified around the world, and the majority...

Was Little Ice Age Caused By Increased Volcanism In The Middle Ages?
2012-05-10 08:19:09

A large part of the Northern Hemisphere was in the midst of an unusual cold snap for nearly 500 years, from the Middle Ages through the early 19th century, in what scientists now call the “Little Ice Age.” A new study, published in the journal Geophysical Research Letters, has probed the longstanding mystery of when this event actually began, what caused it and how it was sustained for such a long period. Gifford Miller, a climatologist at the University of Colorado at...

Yellowstone: New Picture Emerges Of A More Active, Less 'Super' Volcano
2012-04-30 08:36:47

Brett Smith for Redorbit.com New research is casting doubts on the frequency or even the possibility of a ℠super-eruption´ that could blot out the sun from the Earth with a thick veil of volcanic ash. A joint research team from Washington State University and the Scottish Universities Environmental Research Centre said the biggest Yellowstone eruption on record was actually two different eruptions at least 6,000 years apart. According to the study published in the June...

NASA Satellite Captures Video Of Mexico's Popocatepetl Volcanic Ash Cloud
2012-04-23 09:20:33

[ Watch the Video ] Mexico's Popocatepetl Volcano has re-awakened and has been emitting gas and ash. NOAA's GOES-13 satellite has been viewing the ash cloud, and it was documented in a short new video released by NASA's GOES Project on Friday. NOAA's Geostationary Operational Environmental Satellite, GOES-13, captures visible and infrared images of weather over the eastern U.S. every 15 minutes, and spotted an ash and gas cloud streaming from Mexico's Popocatepetl Volcano over several...

Eruption Threat Level Increased At Volcano Near Mexican Capital
2012-04-21 05:40:16

The Popocatepetl volcano located outside of Mexico City has started spewing ash and fragments of glowing, molten rock thousands of feet down its slopes, forcing officials at one of the world's largest cities to increase the volcano's alert level, BBC News and the Associated Press (AP) are reporting. The volcano, which is also commonly referred to as 'Popo,' has been expelling small amounts of ash on an almost daily basis since entering a round of eruptive activity back in 1994, the AP...

Volcanic Plumbing Provides Clues on Eruptions and Earthquakes
2012-04-13 03:49:08

Two new studies into the "plumbing systems" that lie under volcanoes could bring scientists closer to understanding plate ruptures and predicting eruptions–both of which are important steps for protecting the public from earthquake and volcanic hazards. International teams of researchers, including two scientists from the University of Rochester, have been studying the location and behavior of magma chambers on the Earth's mid-ocean ridge system–a vast chain of volcanoes along...

2012-03-30 08:29:09

Two new studies into the "plumbing systems" that lie under volcanoes could bring scientists closer to predicting large eruptions. International teams of researchers, led by the University of Leeds, studied the location and behavior of magma chambers on the Earth's mid-ocean ridge system - a vast chain of volcanoes along which the Earth forms new crust. They worked in Afar (Ethiopia) and Iceland - the only places where mid-ocean ridges appear above sea level. Volcanic ridges (or...


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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