| 火山碎屑空降沉积的二维数值模拟 |
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| 引用本文： | 赵谊,张程远,席道瑛. 火山碎屑空降沉积的二维数值模拟[J]. 地震地质, 2002, 24(3): 377-386. DOI: ISSN:0253-4967.0.2002-03-009 |
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| 作者姓名： | 赵谊 张程远 席道瑛 |
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| 作者单位： | 1. 中国科学技术大学地球与空间科学系,合肥,230026;黑龙江省地震局火山研究所,哈尔滨,150090
2. 中国科学技术大学地球与空间科学系,合肥,230026 |
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| 基金项目： | 黑龙江省自然科学基金项目 (G980 3和G9914 )资助 |
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| 摘 要： | 从大气中火山灰扩散的二维微分方程出发 ,采用Suzuki(1983)对火山空降碎屑灾害数值模拟的数学模型 ,研制出用于单个火山一次性喷发事件的碎屑物空降沉积分布的实用程序。介绍了编程的基本思想 ,讨论了编程过程中所遇到的实际问题 ,同时结合长白山火山物理研究工作给出的长白山火山动力学参数 ,对长白山火山喷发空降碎屑厚度分布进行了具体模拟应用 ,针对实际模拟结果对程序提出了改进意见 ,并对Suzuki火山碎屑空降沉积模型进行了讨论
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| 关 键 词： | 火山灾害 空降碎屑物 数值模拟 |
| 文章编号： | 0253-4967(2002)03-0377-10 |
| 修稿时间： | 2001-05-14 |
2D-NUMERICAL SIMULATION OF DISPERSION OF TEPHRA FALLOUT |
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| ZHAO Yi ,) ZHANG Cheng yuan ) XI Dao ying ) ) University of Science and Technology of China,Hefei ,China )Institute of Volcanology,Seismological Bureau of Heilongjiang Province,Harbin ,China. 2D-NUMERICAL SIMULATION OF DISPERSION OF TEPHRA FALLOUT[J]. Seismology and Geology, 2002, 24(3): 377-386. DOI: ISSN:0253-4967.0.2002-03-009 |
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| Authors: | ZHAO Yi ) ZHANG Cheng yuan ) XI Dao ying ) ) University of Science Technology of China Hefei China )Institute of Volcanology Seismological Bureau of Heilongjiang Province Harbin China |
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| Affiliation: | ZHAO Yi 1,2) ZHANG Cheng yuan 1) XI Dao ying 1) 1) University of Science and Technology of China,Hefei 230026,China 2)Institute of Volcanology,Seismological Bureau of Heilongjiang Province,Harbin 150090,China |
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| Abstract: | Tephra falls is one of the most serious volcanic hazards. The purpose of the quantitative simulation of this complex dynamic process is to build up a model for real time prediction of this hazard of volcanic eruption. Tephra falls are controlled by many factors, so that it is difficult to build up a quantitative model, and possible only to build up a semiquantitative model. Another purpose of the simulation is to get quantitative information of eruption source based on the survey of tephra fallout. The resu |
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| Keywords: | volcanic disaster tephra fallout numerical simulation |
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