Geohazards  
     
     
 
 
 



Figure 18. Volcanic hazard map at Merapi (Indonesia). The forbidden zone encompasses an area affected by pyroclastic flows and surges and thick tephra falls. The first danger zone is subject to ballistics, tephra fall and lahars, and the second is subject to lahars and floods (following river valleys). Adapted from Kusumadinata (1984).

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