海南五指山形变台DSQ型水管倾斜仪与VP型垂直摆倾斜仪同震响应对比分析

选取2014-2018年海南五指山形变台DSQ型水管倾斜仪和VP型垂直摆倾斜仪记录的20个地震的同震响应资料，对比分析2套仪器的同震响应特征。结果表明：在震中距相近时，二者响应幅度、同震响应持续时间与震级呈正相关；除少数地震外，在震级相近或相同时，二者地震响应幅度与震中距呈负相关；地震响应延迟时间与震中距有关，二者均呈正相关；对于同一地震，一般VP型垂直摆倾斜仪的最大响应幅度较大，且同震持续时间较长。

Comparative analysis of the co-seismic response between water-tube tiltmeter and vertical pendulum tiltmeter at Wuzhishan Deformation Station in Hainan

Co-seismic response data of 20 earthquakes recorded by the DSQ water-tube tiltmeter and the VP vertical pendulum tiltmeter at Wuzhishan Deformation Station in Hainan from 2014 to 2018 are selected to carry out a comparative analysis of co-seismic response characteristics by the two sets of instruments. The results show that when the epicentral distances are close, the response amplitude and duration of the two instruments are positively correlated to the magnitude. Except for a few earthquakes, when the magnitudes are close or the same, response amplitude of water-tube tiltmeter and vertical pendulum tiltmeter is negatively correlated to the epicentral distance. Earthquake response delay time is related to the epicentral distance, they're positively correlated. Usually, the response amplitude of the VP vertical pendulum tiltmeter is larger than that of the water-tube tiltmeter for the same earthquake, and the co-seismic duration is longer.