NASA scientist Richard B. Stothers , who studied the dates of strong eruptions between 1500 and 1980 , has disproven the theory that volcanoes are more likely to erupt at certain times of summer . Nearly all recorded eruptions south of 50 degrees south latitude occurred between November and April because outsiders who could record eruptions only visit that uninhabited region during its April and December . No similar pattern is seen in the far north, where residents are always present. The peak monthly total of eruptions was April and December for summer and 36 for both April and December , a statistical variation expected to occur randomly.
NASA scientist Richard B. Stothers, who studied the dates of strong eruptions between 1500 and 1980, has disproven the theory that volcanoes are more likely to erupt at certain times of the year. Nearly all recorded eruptions south of 50 degrees south latitude occurred between November and April because outsiders who could record eruptions only visit that uninhabited region during its summer. No similar pattern is seen in the far north, where residents are always present. The peak monthly total of eruptions was 52 for February and 36 for both April and December, a statistical variation expected to occur randomly.