【摘要】 PBO(Plate Boundary Observatory)计划专门设计了一批钻孔应变仪台网,在数百米距离内,安装2~3台仪器,以研究钻孔应变仪如何响应构造活动的信号,以及局部因素会造成何种干扰。本文收集了6个这样的台网的资料,给出了所有仪器数年的记录曲线,并对观测结果显示的地壳应变场做了简要的分析对比,发现6个试验台网记录的大量所谓应变积累的信号可能不是统一的地壳构造活动,基本上是局部因素变动造成的干扰。对PBO台网试验揭示的问题进行了初步讨论,并对我国钻孔应变观测工作的现状与发展提出了几点建议。更多还原

【Abstract】 Several clusters of borehole strainmeters were specially established in PBO,in which 2 or 3 instruments were installed within a few hundred meters to study how the borehole strainmeter responds to tectonic activities and what interference will be generated by local,non-tectonic factors.Data of 6 such clusters were collected and presented in the paper.The crustal strain field revealed at the data and a brief analysis were also given.It shows that many strain accumulation signals recorded by 6 strainmeter networks are basically due to local processes instead of tectonic activities.Primary discussion about PBO strainmeter networks was carried out and some suggestions concerning development of borehole strainmeter networks in China were made as well.更多还原