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首页> 外文期刊>Earth, planets and space: EPS >Numerical simulation of volcanic plume dispersal from Usu volcano in Japan on 31 March 2000 using PUFF model
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Numerical simulation of volcanic plume dispersal from Usu volcano in Japan on 31 March 2000 using PUFF model

机译：2000年3月31日日本Usu火山火山羽流扩散的数值模拟。

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In this study, a volcanic ash tracking model called "PUFF" is applied to the actual eruption of Usu volcano on 31 March 2000 in order to infer the movement of airborne ash clouds for aviation safety. The PUFF model was developed and operated by the Alaska Volcano Observatory since the eruption of Redoubt volcano in 1989. The performance of the PUFF model is examined in this study based on the ground truth of the observed distribution of tephra on the ground. According to the model simulation, the ash plume erupted from Usu volcano first moved eastward for the New Chitose International Airport. As the upper air westerly wind gradually shifted to southerly wind, the ash front traveled from Chitose to Nemuro while the subsequent eruption plume directed toward the northeast over Sapporo area. The vertical cross sections and 3-D perspective image of the ash clouds are presented as a function of time. The model simulation was justified by the agreement between the modeled and observed distributions of tephra on the ground. The PUFF model with accurate wind information can simulate the location and the direction of the moving airborne ash cloud on a realtime basis, which may provide crucial information to aviation industry.
机译：在这项研究中，将一个名为“ PUFF”的火山灰追踪模型应用于2000年3月31日的乌苏火山的实际喷发，以推断航空灰分的运动对航空安全的影响。自1989年重生火山喷发以来，PUFF模型是由阿拉斯加火山天文台开发和运行的。本研究中PUFF模型的性能是根据实测的地弗拉分布在地面的真实性进行检验的。根据模型模拟，乌苏火山火山喷出的烟灰首先向东移动至新千岁国际机场。随着高空西风逐渐转变为南风，灰烬锋面从千岁迁移至根室，而随后的喷发羽流则指向札幌地区的东北部。灰云的垂直横截面和3-D透视图图像随时间变化。通过模拟和观察到的地弗拉分布在地面上的一致性证明了模型模拟的合理性。具有准确风信息的PUFF模型可以实时模拟移动的机载灰云的位置和方向，这可能为航空业提供重要信息。

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