易县地震台地形变模拟和数字化记录资料对比分析

COMPARATIVE ANALYSIS TO DIGITAL AND ANALOGUE DATA OF CRUSTAL DEFORMATION IN YIXIAN SEISMOSTATION

摘要: 用形变前兆台网及台站数据处理系统软件对易县地震台2002年度自记水管仪和伸缩仪的模拟记录和数字化记录资料进行处理,求得噪声水平、潮汐因子和误差,再计算出内在精度,从而在噪声水平和内在精度两个方面对模拟和数字化记录资料进行对比分析,从中发现数字化记录资料在内在精度和噪声水平两个方面均优于模拟记录资料。

Abstract: the digital and analogue data of water tube tiltmeter and tensometer are processed with related software. The noise level, tidal factor, error and inner precision are calculated. Though comparison we find digital data is better than analogue data in noise level and inner precision.