Friday, March 20, 2015

NASA satellite image of the new island off the coast of Pakistan Island, a mixture of clay, fine sa


NASA satellite image of the new island off the coast of Pakistan Island, a mixture of clay, fine sand and rock solid, has about 90 meters wide and 20 meters above the water ABC.ES ABC_CIENCIA / MADRID rises - Day 30 / 09/2013 - 10:46 a.m. On September 24, a major earthquake of magnitude 7.7 on the Richter scale shook western Pakistan, killing gandaria city mall at least 350 people and leaving more than 100,000 gandaria city mall homeless. Amid the destruction, a new island in the sea arose, one kilometer from the coast of the city of Gwadar, which surprised scientists. Two days later, the satellite Earth Observing-1 (EO-1) captured from space image of the island. Investigators gandaria city mall believe the island, probably a "mud volcano" arose shortly after the earthquake to 380 km inland. The image below these lines, gandaria city mall obtained by the satellite Landsat 8 shows the same area on April 17, 2013.
The same area last April: No sign of NASA island in the satellite images in which the island is appreciated, lighter shades of green and brown in water reveal a shallow or suspended sediment seabed. The water depth around the new island is about 15-20 meters as marine geologist Asif Inam the National Institute of Oceanography of Pakistan. The photograph shows the parallel undulations even forming waves to march towards the shore. gandaria city mall Another aerial photography, the National Institute of Oceanography of Pakistan, shows the shape of the terrain in detail, which is believed to 75-90 meters wide and stands 15 to 20 feet above the water. The surface is a mixture of clay, fine sand and rock solid.
Aerial image of the new island, up to 90 meters wide NIO "The island is actually a big pile of mud seabed was pushed up," says Bill Barnhart, a geologist with the US Geological Survey, which studies earthquakes in Pakistan and Iran. "It is normal for this area of the world, and that geology is right for their training. It takes a layer of methane gas buried under pressure, carbon dioxide and ...- fluids. When this layer is disturbed by seismic waves (like an earthquake), gases and fluids rush to the surface, leaving the rock and mud with them. " Inam methane gas exhaust believed that in this case, the pressure came from an underground natural gas expansion. gandaria city mall "In the new island is a highly flammable continuous degas methane escape through a number of vents". Several of these islands have appeared 700 km off the coast of Makran during the last century, but as it is a sparsely populated area often overlooked. It is likely that the life of this island is short. The underground gas will cool bag or leak over time, causing the crust to collapse and fall again. The waves, storms and tides Arabian Sea sand and mud is also carried. These islands usually last from a few months to a year before sinking to the sea.
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Although weather conditions affected the viewing of the phenomenon in several countries, as a total eclipse was in some islands and was followed by internet worldwide. Photo: AFP
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