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本文对已扩大的滇西实验场区1981至1983年垂直形变资料进行分析处理,结果表明下关至丽江原实验场区域范围内近两年垂直形变总趋势与1981年以前基本一致,仍然具有北升南降趋势。而整个场区近期垂直变化为西北部相对地向东南方向地区倾斜。根据历年来水准测量资料和跨断层短水准所得结果对某些断层的现今活动性和活动方式进行了讨论。考虑到形变资料中有较明显的系统误差存在,采用了回归分析的方法将其进行了改正。
In this paper, the vertical deformation data from 1981 to 1983 in the enlarged experimental site in western Yunnan were analyzed. The results show that the vertical deformation trend in the past two years within the scope of Xiayuan-Lijiang original experimental site is basically the same as that before 1981, Rise or fall south trend. The vertical changes in the entire field near the northwest relative to the southeast area tilt. The current activities and activities of some faults are discussed based on the results of leveling data and short-range faults across the years. Taking into account the existence of more obvious systematic errors in the deformation data, a regression analysis method was adopted to correct it.