甘肃高台分量式应变前驱波的特征分析

Analysis on Characteristics of Precursor Waves Recorded by Component Strain Observation at Gaotai Seismic Station, Gansu Province

摘要:

甘肃高台基准台钻孔分量应变仪运行稳定,资料连续可靠。发现在部分大震前有形态各异的前驱波存在,其表现方式有突升、突降、固体潮畸变和地脉动加粗等。介绍了部分震例,并对其成因进行了初步的讨论。

Abstract:

The observation data of 4-component borehole strainmeter at Gaotai base seismic station, Gansu province, have been stable, continuous and reliable since it was set up in 2007. It is found that different types of the precursory waves appeared before some strong earthquakes, such as sudden rise, sudden plunge, tidal distortion and microtremor bold, etc. In this paper the precursory waves before some strong events are introduced, and the mechanism of the wave is discussed also.