鹤岗地震台水管、垂直摆倾斜仪同震响应对比

Comparison on co-seismic responses of water tube tiltmeter and vertical pendulum tiltmeter at Hegang Seismic Station

对鹤岗地震台水管倾斜仪和垂直摆倾斜仪记录到的同震响应资料进行分析,认为:水管仪和垂直摆对不同震中距的地震记录存在较大差异;水管仪稳定性较好,而垂直摆实际灵敏度更高;两种仪器记录的同震响应与震级、震中距及震源深度具有相关性。

Analyzing co-seismic responses recorded by water tube tiltmeter and vertical pendulum tiltmeter in Heilongjiang Province,we consider that the co-seismic responses of water tube tiltmeter and vertical pendulum tiltmeter recorded are different for the earthquakes with different epicentral distance.Numerical stability of the water tube tiltmeter is better than that of vertical pendulum tiltmeter,but responsive sensitivity of vertical pendulum tiltmeter is better than that of water tube tiltmeter.Co-seismic responses of both instruments recorded are accociated with magnitude,focal depth,epicentral distance.