五大连池火山危险性分析

THE ANALYSIS OF WUDALIANCHI VOLCANOES HAZARD

针对五大连池火山危险性问题进行了一系列的地球物理反演和分析，通过对现代岩浆房概念和国外活火山实例剖析，采用岩浆固结的Ｓｔｅｆａｎ问题的理论公式反演了岩浆房的团结曲线和团结时间;;引入ＳＦＴ理论探讨了五大连池火山岩浆碎屑化机制；利用壳幔结构比Ｒ值的分析方法分析了五大连池火山区地壳稳定性;;采用火山区卫星重力异常剖面的分析方法探讨了五大连地火山区地幔物质活动性;;结合五大连池火山现代喷发的史料分析，模拟了五大连地火山喷发物理过程的栓塞机构和渗漏效应，在此基础上对五大连池火山危险性进行了初步分析．

A series of calculation and analyses are developed to estimate Wudalianchi volcanoes hazard. Based on the modern magma chamber conception and examples of active volcanoe abroad, theconsolidation curve and time are inverted by using the theoretical formula of Stefan object, thefragmentation mechanism of Wudalianchi volcano is discussed by the way of SFT (SequentialFragmentation Theory); the crust stability of Wudalianchi volcanoes area is discussed utilizing the structural ratio of crust and mantle; the activity of mantle material in Wudalianchi volcanoes area is discussed utilizing the satellite gravity abnormality of this area, the seepage effect and plug structure ofWudalianceh volcanoes eruption are simulated with the history records of their modern eruqtions. Atlast, volcano hazard is analyzed based on the above discussions in this paper.