摘要
分析了1996年3月13日新疆阿尔泰地区6．1级地震前富蕴、阿尔泰两台的地倾斜资料。结果表明资料异常具有阶段性特征。建台时间较早的富蕴台可获得趋势性异常，其时间比我国东部相应震级的略短。在短期阶段，两台的资料异常虽然出现时间有先有后，异常形式存在明显差异，但在共同形变场作用下相互关联，协同发展。根据形变场的性质及资料异常的方向性，对预估危险地点会有所帮助。资料变化停滞或异常恢复，是地震短期内就要发生的标志，可作为预报发震时间的判据。
The authors analyse ground tilt data of Fuyun and Altai stations before Altai Ms6. 1 earthquake. The results show that anomaly data has periodic features. Fuyun station which built earlier obtained trend anomaly, and the anomaly time is shorter than the same magnitude earthquake in the east part of China, In the short -term period, the anomalies appeared in different time, in the two stations and their shapes were obviously different, but under the action of the same deformation field, they were correlated and developed. The characteristic of the deformation field and the direction of the anomaly data help to predict the risk area. Data variation stop or anomaly recovery are the earthquake marks in short-term.
出处
《高原地震》
1997年第2期21-26,共6页
Plateau Earthquake Research
关键词
地倾斜异常
形变场
孕震构造
地震类型
Ground tilt anomaly Deformation field Seismogenic structure Earthquake type
