Abstract

The possibility that ice nuclei are associated with or generated by volcanic eruptions is of long-standing interest. Studies of Hawaiian volcanos to examine such a possibility have been undertaken by several investigators with controversial results. This study reviews and interprets past findings and adds some new results. The new results involved continuous monitoring of ice nuclei with an NCAR counter during a 1971 eruption and membrane filter sampling for ice nuclei at the ground and in the air during a 1972 eruption. Also, laboratory research was conducted on ice nucleus generation from lava and brush burned during eruptions. No clear indication was found that ice nuclei are directly generated during the eruptions, but ice nucleus activity did increase during these periods.

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