![]() ![]() One example is ice-penetrating radar, which can “see” through the ice to reveal the shape of the land below. Created by the British Antarctic Survey, it combines different types of data about Earth. They used an online data set called Bedmap2. But Van Wyk de Vries and his colleagues looked instead at the land surface beneath the ice. Previous scientific studies in the area had focused on the ice. ![]() The team described its findings last year in a Geological Society of London Special Publication. No surface clues, however, reveal the existence of most of them. Small bumps on the ice mark the site of some buried volcanoes, he says. “The fact that there was a large number of undiscovered volcanoes in Antarctica that had escaped attention was honestly surprising to all of us, especially given that many of them are huge,” he notes. Some peaks were large - up to 1,000 meters (3,280 feet) high and tens of kilometers (at least a dozen miles) across, says Van Wyk de Vries. These were 91 new volcanoes hiding beneath ice as much as 3 kilometers (1.9 miles) thick. Together, they confirmed what Van Wyk de Vries thought he saw. Then he showed them to Andrew Hein and Robert Bingham. Cone shapes, he knew, are typical of volcanoes. Occur again, increasing the risk to human life.But then, he says, he started seeing familiar-looking cone shapes. It can thelefore be assumed that a change in eruption style could Volcano's patterns activity have changed Over the estimated 1.3 million years that it Upper flanks of the volcano are made up of large-scale lava flows that suggest that the Inside a volcano can make for very violent explosive type eruptions. Volcano to release gases such as SO, and C02, gases which if allowed to build up To the people living and working in Antarctica. The lava lake was first discovered in 1972Īnd is still present in approximately the same place it has been for the past 30 years.ĭue to its recent active nature, the volcano is not considered to pose much of a threat The world's Southern-most active volcano, Mt Erebus hosts the only phonolitic In volcanological terms, Mt Erebus has many special properties. Hundreds, sometimes thousands of metres into the air and dispersing ejecta over a Presently, strombolianĮruptions occur daily from the volcano, throwing ash, lava, blocks and bombs Mount Erebus, on the other hand, is far from extinct and hasīeen in continuous eruptive phase since the early 1970's. The other three volcanoes on Ross Island, Mt Bird, Mt Terra Nova and Mt Some 140 years since Sir James Ross discovered and named it after one Of his ships inġ941. Region, the volcano stands 3794 metres above sea level (MEVO, 2002) and is one ofįour volcanic cones that occupy Ross Island. Mount Erebus is a polygenetic stratovolcano which dominates the landscape of the It can thelefore be assumed that a change in eruption style could occur again, increasing the risk to human life. However, the upper flanks of the volcano are made up of large-scale lava flows that suggest that the volcano's patterns activity have changed Over the estimated 1.3 million years that it has been active. Its continual eruptions allow the volcano to release gases such as SO, and C02, gases which if allowed to build up inside a volcano can make for very violent explosive type eruptions. Due to its recent active nature, the volcano is not considered to pose much of a threat to the people living and working in Antarctica. The lava lake was first discovered in 1972 and is still present in approximately the same place it has been for the past 30 years. Aside from being the world's Southern-most active volcano, Mt Erebus hosts the only phonolitic magma lake in the world (Kyle, 1981). Presently, strombolian eruptions occur daily from the volcano, throwing ash, lava, blocks and bombs hundreds, sometimes thousands of metres into the air and dispersing ejecta over a wide area. Mount Erebus, on the other hand, is far from extinct and has been in continuous eruptive phase since the early 1970's. The other three volcanoes on Ross Island, Mt Bird, Mt Terra Nova and Mt Terror are now extinct. The mountain has captivated people for some 140 years since Sir James Ross discovered and named it after one Of his ships in 1941. Located on Ross Island in the Ross Sea region, the volcano stands 3794 metres above sea level (MEVO, 2002) and is one of four volcanic cones that occupy Ross Island. Mount Erebus is a polygenetic stratovolcano which dominates the landscape of the Southern Ross Island area of Antarctica. ![]()
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