摘要
分析研究了兰州形变台水管倾斜仪、石英伸缩仪和石英水平摆倾斜仪１９９４—１９９６年的观测资料，发现在甘肃永登和天祝２次地震前Ｍ２波潮汐因子有明显的异常显示．各分量固体潮日均值曲线在２次地震前后出现明显的加速异常变化，且震后速率明显大于震前．
The observation data by water tube tiltmeter,quartz horizontal extensometer and quartz pendulum tiltmeter at Lanzhou deformation station during 1994—1996 are analysed.The results show that anomaly of the tidal factors of M 2 wave appeared before the Yongdeng M S5.8 earthquake on July 22,1995 and the Tianzhu M S5.4 earthquake on June 1,1996.Accelerating anomalous change with rate greater after earthquake than before earthquake in tide daily average values are obvious before and after the two earthquakes.
出处
《西北地震学报》
CSCD
1998年第3期33-38,共6页
Northwestern Seismological Journal
基金
中国地震局兰州地震研究所青年地震科学基金
关键词
地倾斜
固体潮
地震前兆
永登地震
天祝地震
Gansu, Ground tilt tide, Anomalous character, Horizontal strain earth tide, Yongdeng earthquake, Tianzhu earthquake
