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The eruption of Eyjafjallajokull - Internet Geography
November 4 - 8, TIFF. The volcano also released sulfur dioxide, a colorless gas that can harm human health and cool Earth's climate. Sulfur dioxide is measured here in Dobson Units: The greatest concentrations appear in dark red-brown; the lowest in light peach. Typically used to measure ozone, the Dobson Unit is the number of molecules of gas that would be required to create a layer 0. On November 9, , the Volcanic Ash Advisory Centre in Darwin, Australia, reported a sulfur dioxide cloud over the Indian Ocean between 40, and 50, feet 12, and 15, meters , in the upper troposphere. The effects of sulfur dioxide vary depending on the amount emitted, the latitude where the emission occurs, the altitude where the gas is concentrated, and regional wind and weather patterns.
Mount Merapi, one of Indonesia's most dangerous volcanoes, which first erupted on October 26, has killed over people and forced the evacuation of more than , The disaster happened a day after a tsunami hit western Indonesia, killing at least people. The volcano, which lies on the outskirts of the city of Yogyakarta on Java Island, covered nearby villages and towns in ash. The ash cloud also disrupted flights in the region, burnt houses, vegetation and livestock.
In late October , Mount Merapi in Central Java , Indonesia, began an increasingly violent series of eruptions that continued into November. Seismic activity around the volcano increased from mid-September onwards, culminating in repeated outbursts of lava and ashes. Large eruption columns formed, causing numerous pyroclastic flows down the heavily populated slopes of the volcano. Merapi's eruption was said by authorities to be the largest since the s. Over , people were evacuated from the affected area.