摘要
在文安地震台开展的土层钻孔应变连续观测试验,已经取得三年多的观测数据。观测仪器采用的是YRY-4型高精度钻孔应变仪。这种水平四分量应变观测仪有自检功能,提供了验证观测可靠性的依据。采用相对实地标定方法,可定量评估各元件工作状态,并进一步对观测数据进行较正。定义了四分量钻孔应变观测数据的信度,通过对文安试验观测资料的相对实地标定校正,数据信度很高,证明YRY-4仪器安装成功。
A test of continuously observing strain changes Wenan, Hebei province. A YRY-4 type borehole strainmeter in soil has been recording data for over three years in of high resolution is used for the horizontal strain ob- servation. The self-checking function of the YRY-4 strainmeter which has four gages ensuring the reliability of the data. Relative in-situ calibration is applied to evaluate the operation of the instrument, as well as correct the read- ings, which is very significant for precisely calculating the principal orientation of changes. Thus data credibility of four gages borehole strainmeter is defined here. A correction using the result of relative in-situ calibration entails high data credibility of the YRY-4 strainmeter at Wenan, indicates that it has been working well.
出处
《大地测量与地球动力学》
CSCD
北大核心
2012年第6期152-155,159,共5页
Journal of Geodesy and Geodynamics
基金
中央级公益性科研院所基本科研业务专项(ZDJ2010-27
ZDJ2008-40)
