On the relationship between eruption intensity and volcanic plume height: Insights from three-dimensional numerical simulations
On the relationship between eruption intensity and volcanic plume height: Insights from three-dimensional numerical simulations
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DOI：
10.1016/j.jvolgeores.2016.04.016
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发表时间：
2016-10-15
影响因子：
2.9
通讯作者：
Koyaguchi, T.
中科院分区：
文献类型：
--
作者：
Suzuki, Y. J.;Costa, A.;Koyaguchi, T.
火山喷发期间产生的羽流高度通常用于估计相关的喷发强度（即大规模喷发率；MER）。为了量化羽流高度和 MER 之间的关系，我们使用不同喷口尺寸的火山羽流三维 (3D) 数值模型进行了参数研究。五次模拟的结果表明，羽流下部区域的流动模式随着喷口尺寸的变化而系统地变化，因此也随着 MER 的变化而变化。对于 MER 10(8) kg s(-1)，流动显示出喷泉状结构（喷泉状流态）。 4 x 10(7) kg s(-1) < MER 的羽流流动模式
Height of plumes generated during explosive volcanic eruptions is commonly used to estimate the associated eruption intensity (i.e., mass eruption rate; MER). In order to quantify the relationship between plume height and MER, we performed a parametric study using a three-dimensional (3D) numerical model of volcanic plumes for different vent sizes. The results of five simulations indicate that the flow pattern in the lower region of the plume systematically changes with vent size, and hence, with MER. For MERs 10(8) kg s(-1), the flow shows a fountainlike structure (the fountain-like regime). The flow pattern of plumes with 4 x 10(7) kg s(-1) < MERs