MERAPI VOLCANO (Indonesia)

Level of Activity Hot ash-clouds, volcanic bombs, ash fall and lava flows are named primary dangers. Areas that will normally be attacked by those danger are classified as the forbidden zone. A permanent stays in that area is prohibited. Other

danger during and following an eruption are called secondary danger, which includes lahars. The most

dangerous effect of the Merapi eruption is pyroclastic flow. Whereas lahar are particularly feared as it can traveling long distance. The risk of Merapi volcano

becomes higher because people living up to an elevation of 1200m. Even, some villages are located at an elevation

of 1700 m. For illustration, at an elevation more than 500m, there are about 32 villages with a population of

258.200, with a density of 690 per km2 and a population growth of about 3 %. This means that the risk will be high.