钻孔应变台站记震能力研究

EARTHQUAKE RECORDING ABILITY OF BOREHOLE STRAIN METER

以昌平台体应变为例,研究了体现钻孔应变台站记震能力的方法,并对计算步骤和处理方法进行了说明。选取20套中国大陆观测时间较长且数据较好的钻孔体应变仪观测记录作为研究对象,计算出其各自的记震能力线,给出各台对6级地震的响应范围。此公式不仅可以量化钻孔应变仪的对地震的反应能力,而且是对地震仪器的一种新的科学评估方法。同时,基于地震前兆释放能量小于地震发生时释放的能量的基本理解,此结果对于确定地震前兆的位置和震级范围也有参考价值。

The earthquake recording ability of borehole strain meter is researched and calculation steps and processing methods are discussed by taking the data of Changping TJ-type borehole strain meters as an example. 20 TJ-type borehole strain meters that have been installed in China's Mainland for longer time and with better data archived are selected as the study objects, their earthquake recording ability lines are calculated and show their earthquake response range for event of Ms6.0. This formula not only can quantify a strain meter＇ s earthquake response ability in location range and magnitude, but also is a new scientific method for assess a seismic instrument. At the same time,on the basis of common understanding that the energy released in the precusory period is supposed to be less than that released by the actual earthquake,this formula is also useful for determining precursor＇ s location and magnitude range.