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首页> 外文期刊>Journal of Volcanology and Geothermal Research >New estimates of the 1815 Tambora eruption volume
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New estimates of the 1815 Tambora eruption volume

机译:对1815年坦波拉火山喷发量的新估计

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Volume estimates of the 1815 Tambora eruption were re-analysed using new ash thickness data and new methods, giving a range of possible volumes for the different eruption phases. Volume calculations include ash fall extrapolation and caldera size approximations, as well as volume estimates from mass eruption rates and eruption duration, to find the most likely range of volumes consistent with the different methods and possible eruption dynamics. The results give a total volume of about 41 ± 4 km~3 DRE, made of 23 ± 3 km~3 DRE ash fall and 18 ± 6 km~3 DRE pyroclastic flows. The ash fall volume can be further divided into 11 ± 2 km~3 DRE Plinian ash fall and 12 ± 4 km~3 DRE co-ignimbrite, making the Plinian ash fall larger than previously assumed, and more intense due to a higher mass eruption rate of 2 × 10~9 kg/s.
机译:使用新的灰分厚度数据和新方法重新分析了1815年坦博拉火山喷发的体积估计,为不同的喷发阶段提供了一系列可能的体积。体积计算包括灰烬外推法和火山口大小近似值,以及根据喷发速率和喷发持续时间估算的体积,以找到与不同方法和喷发动态一致的最可能的体积范围。结果表明,总体积约为41±4 km〜3 DRE,由23±3 km〜3 DRE的落灰量和18±6 km〜3 DRE的碎屑流组成。灰分降落量可进一步分为11±2 km〜3 DRE普利尼灰烬降落和12±4 km〜3 DRE共燃,使得Plinian灰烬降幅大于先前的假设,并且由于更高的喷发而变得更强烈速度为2×10〜9 kg / s

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