Abstract
Energy of volcanic eruption is divided into various ways, such as lava flows, ash production, explosion, ground vibration, air waves and so on. In order to elucidate the cruptive mechanism, energy partition of volcanic eruption in unit time is considered to be a key to solve the problem. In this short paper, partition of eruption energy was calculated for typical three basaltic volcanoes. Ratio of tremor energy to thermal energy is almost the same for both Mihara and Nyragongo in spite of their different eruptive mechanism. Tremor energy was found to be small for Kilauea Volcano compared with the above two volcanoes. This was attributed to the different source mechanism of tremor. Partition of eruption energy was calculated for Also Volcano which showed phreatic explosion in 1958. Kinetic energy is almost ten times of thermal energy. Ratio of energy converted to elastic waves to thermal energy is found to be equivalent to the ratio of energy of elastic waves to the chemical energy in case of explosion of chemical explosives.
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