Showing posts with label iceland. Show all posts
Showing posts with label iceland. Show all posts
Thursday, April 11, 2013
Tuesday, March 5, 2013
Surtr's (Island Surtsey) Volcanic Island, Iceland
The new island was named after Surtr, a fire jötunn or giant from Norse mythology.It was intensively studied by volcanologists during its eruption, and afterwards by botanists and biologists as life forms gradually colonised the originally barren island. The undersea vents that produced Surtsey are part of the Vestmannaeyjar submarine volcanic system, part of the fissure of the sea floor called the Mid-Atlantic Ridge. Vestmannaeyjar also produced the famous eruption of Eldfell on the island of Heimaey in 1973. The eruption that created Surtsey also created a few other small islands along this volcanic chain, such as Jólnir and other, unnamed peaks. Most of these eroded away fairly quickly.
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Monday, March 4, 2013
Thrihnukagigur Exploring inside the volcano in Iceland
hrihnukagigur volcano, located about 30km from Reykjavik, the capital of Iceland, has become the latest adventure tourism destination, because it is the only dormant volcano that allows regular access to its magma chamber. In most cases, when a volcano erupts, the magma chamber is filled with lava which subsequently cools and hardens, blocking the entrance. But at Thrihnukagigur, it is believed the lava solidified through the walls or simply drained back to the depth of the earth. The magma chamber remained exposed and intact, making this a completely unique phenomenon to Thrihnukagigur.
The volcano last erupted some 4,000 years ago, leaving an opening of approximately 4×4 meters in diameter, leading to a bottle-shaped volcanic vault. The magma chamber is about 120m deep and measures 50x70m at the bottom. An Icelandic tourist operator now provides curious adventurists a chance to explore this ancient volcano inside out.
hrihnukagigur volcano, located about 30km from Reykjavik, the capital of Iceland, has become the latest adventure tourism destination, because it is the only dormant volcano that allows regular access to its magma chamber. In most cases, when a volcano erupts, the magma chamber is filled with lava which subsequently cools and hardens, blocking the entrance. But at Thrihnukagigur, it is believed the lava solidified through the walls or simply drained back to the depth of the earth. The magma chamber remained exposed and intact, making this a completely unique phenomenon to Thrihnukagigur.
The volcano last erupted some 4,000 years ago, leaving an opening of approximately 4×4 meters in diameter, leading to a bottle-shaped volcanic vault. The magma chamber is about 120m deep and measures 50x70m at the bottom. An Icelandic tourist operator now provides curious adventurists a chance to explore this ancient volcano inside out.
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