Earthquake that occurred thousands of times in 2009. Harrat Lunayyir struck, the area northwest of Saudi Arabia, the quake mencenggangkan experts. Because in this remote region was a volcano. So hard to find a reason why earthquakes happen all that often.
More than a year of research, experts have found the reason why the earth is often swayed. Below ground at the location of the quake, there is lava (magma fluid incandescent) with an unusually large amount. Giant lava that is thought to ignite a series of earthquakes.
As reported by msnbc issue of 27 September 2010, the scientists say it's a stretch of lava in the area is vast. Because of the wide expanse of lava that causes the area referred to as the "Lava Province". In Arabic, it means a stretch of lava Harrat.
Expanse of lava field in the soil reaches about 180,000 square kilometers. Lava field that formed the last 30 million years ago, or since the Saudis broke away from Africa, thought to be one of the triggers formation of the Red Sea.
Initially nearly all geologists suspect that the northwestern part of Saudi Arabia that includes a quiet area. However, several earthquakes and volcanic eruptions that occurred recently changed everything. The area is now thought to be an active volcanic site.
In April and June 2009 more than 30,000 earthquakes that struck the ancient lava field. A total of 19 earthquakes recorded at 4 on the Richter scale.
Peak on May 19, 2009, there was a magnitude 5.4 on the Richter scale that caused the walls of the city of Al Mandy homes were damaged. Seismic sensors do not even mention the possibility of volcanic eruptions will occur. At that time, the Saudi Arabian government to evacuate some 40,000 residents of the location.
John Pallister, volcanologist and chief U.S. Geological Survey (USGS) for volcanic disaster relief program, saying that the process of formation of the Red Sea is still associated with a chain of volcanoes and lava beneath a stretch of land.
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