黑龙江省五大连池新期火山喷发的火山弹动力学初探  

The Preliminary Research on Dynamics of Volcanic Bombs from Modern Eruption in Wudalianchi Area,Heilongjiang Province

作　　者：刘永顺[1] 李家振[2] 孙善平[2] 白志达[2] 

机构地区：[1]首都师范大学地理系,北京100037 [2]中国地质大学地质矿产系,北京100083

出　　处：《地质论评》1999年第S1期384-392,1192,共10页Geological Review

基　　金：国家计委重大项目子课题(编号9511030202);中国国家青年自然科学基金(编号49802006)项目资助

摘　　要：本文系统地总结了黑龙江省五大连池新期火山老黑山和火烧山的火山弹形态和内部结构;对比和讨论了近球状、纺锤状、椭球状和圆饼状火山弹的体积估算和准确的表示方法;初步研究了火山弹的形成、空中飞行和落地变形的动力学过程。根据老黑山火山弹的分布情况,计算出了老黑山新期喷发时火山弹达到的高度范围。The form and internal structure of bombs recently erupted from the Laoheishan and Huoshaoshan volcanoes in Wudalianchi, China, is systematically summarized and studied. By estimating the volumes of spheroidal, fusiform, elliptic, almond-shaped and cow-dung bombs in different models, a more accurate expression of bomb volume is proposed. Furthermore, the dynamics of formation, ballistic trajectory and colliding deformation of bombs is tentatively studied and discussed. According to the scale of the Laoheishan volcano and the distribution of bombs around it, the range of height,at which bombs ascend, has been calculated.

关 键 词：新期火山 火山弹 动力学 五大连池 

分 类 号：P317.3[天文地球—固体地球物理学]