腾冲火山区水平形变初探  

PRIMARY STUDY OF HORIZONTAL DEFORMATION IN TENGCHONG VOLCANO AREA

作　　者：黎炜[1] 刘玉权[1] 邵德晟[1] 

机构地区：[1]云南省地震局

出　　处：《地震研究》1998年第4期362-373,共12页Journal of Seismological Research

摘　　要：介绍了采用精密大地测量的方法，对腾冲火山区域的水平形变情况进行了探索。通过两期相距３８年的实测数据，对火山“休眠期”中岩浆活动与地壳局部变形的相关性进行研究，并提供了部分计算结果。作者认为，采用精密大地测量的方法对火山区域地壳变形进行研究是可行的；火山区域水平形变与构造形变的区别是存在的；腾冲火山区内近几十年内岩浆的动也是明显的，但目前总体为间歇性收缩期；从水平形变测量的结果来看，显示了南面活跃的迹象；且认为可能是岩浆囊的存在才会引起此大范围的地壳活动。Exploration is made to horizontal deformation in Tengchong volcano area adopting accurate geodesy. The observed data with 38 year time spacing have been introduced, by which the relation between magma activity in dormant period and local deformation of the crust has been studied, and partial calculating results is provided. The authors thine that the accurate geodesy used to study the crustal deformation in volcano area is practicable. There exist differences between regional horizontal deformation and tectonic deformation in the volcano area.In the past tens of years, the magma movement in the volcano area was obvious, however, currently it remains intermittent shrinkage period as a whole. It indicates from the results of horizontal deformation that the south is active, further consider that only the existence of magma pockey causes the movement in such a big scale.

关 键 词：腾冲火山 水平形变 大地测量 岩浆活动 构造变形 

分 类 号：P551[天文地球—构造地质学] P317.4[天文地球—地质学]