Magmatic overpressures volatile exsolution and potential explosivity of fissure eruptions inferred via dike aspect ratios

摘要

Distribution of four fissure eruptions and their eruptive products. Broad black lines show the location of eruption fissures. The pink-colored areas and orange-colored areas in Figure A show the distribution of the scoria cone deposits and lava flows ejected from the eruption fissures, respectively. Location of the rim of the 2000 AD caldera is shown by  a broken line. The relief map was created from the 10-m-mesh DEM of the Hokkaido Chizu Co.Ltd. based on the topographic map before the 2000 eruption.