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1.前言把粘结型应变仪胶接在锯山观测所坑道内壁的岩石表面上,通过测定电阻率变化,得以测到1×10~(-9)的地壳应变。这种应变仪最初只是以打点方式进行记录。从1985年6月起使用高灵敏度的模数转換器和微型计算机后,可以把观测数据记录在软盘里。现将根据记录在软
1. Introduction The bond strain gauge is glued to the rock surface of the inner wall of the tunnel of Sawama Observatory. The crustal strain of 1 × 10 -9 can be measured by measuring the change of resistivity. This strain gauge was originally only recorded by way of a dot. Since June 1985 using high-sensitivity analog-digital converters and microcomputers, the observed data can be recorded on a floppy disk. Now based on records in the soft