By the year 2000, the population worldwide at risk from volcanic hazards is likely to increase to about half a billion. Since 1980, significant advances have been made in volcano monitoring, data from which provide the sole scientific basis for er
By the year 2000, the population worldwide at risk from volcanic hazards is likely to increase to about half a billion. Since 1980, significant advances have been made in volcano monitoring, data from which provide the sole scientific basis for er
