现代地质2012，Vol.26Issue(2)：220-228,9.
五大连池老黑山火山弹和喷发柱动力学模拟
Simulation on the Dynamic Process of Volcanic Bombs and Plumes of Laoheishan Volcano in Wudalianchi Area
摘要
Abstract
The volcanic eruption is a complex fluid dynamic process of gas, liquid and solid mixtures. A correct understanding of this process is the key factor to study the volcanic eruption. Eject and Plumeria softwares can be good simulations for dynamic processes of volcanic bombs and plumes during real volcanic eruption. On the basis of detailed investigation of volcanic bombs, volcanic debris and the published data of Laoheishan volcano in Wudalianchi area, this study evaluated dynamic processes of Laoheishan volcanic bombs and plumes using Eject and Plumeria softwares. The results show that the bombs ejected from Laoheishan volcano can reach a maximum height of 530 m and a maximum horizontal distance of 1,000 m when ejection angle is 45°; the maximum height of its volcanic plume is 4. 7 km, and the plume head radius is 2. 3 km. Through the discussion of the eruption scale and the ratio of volcanic ashes, it can be concluded that Laoheishan volcano is a small mafic eruption, and its effect on the environment is small.关键词
火山弹/火山喷发柱/环境效应/老黑山火山Key words
volcanic bomb/ volcanic plume/ environmental effect/ Laoheishan volcano分类
天文与地球科学引用本文复制引用
李永生,刘永顺,张招崇,聂保锋,张东阳..五大连池老黑山火山弹和喷发柱动力学模拟[J].现代地质,2012,26(2):220-228,9.基金项目
国家自然科学基金项目(40472039,40872062, 40772128) （40472039,40872062, 40772128）
北京市委组织部优秀人才项目(20051D0501602). （20051D0501602）
