【摘要】 永胜倾斜潮汐形变台及距其SWW向2.8km的跨程海断裂的断层垂直形变站两处定点形变观测已分别积累了21年和25年的观测数据。对其应用多种识别与提取异常信息的方法处理后发现,1995—2001年显示了4次Ms≥6.0强震震兆异常信息。其形态分别呈"左陡右缓(阶梯式W倾)型"、"下降-峰值-回复"的"下凹对称型";量级分别为≥1.00″与≥9mm;时间为后者早于前者4~6个月;震中距≤140km。由此制定了该两处监测强震灵敏点的中短期预报指南。更多还原

【Abstract】 The observations for 21 and 25 years have been accumulated respectively at Yongsheng tilt tide deformation station and the vertical deformation station across Chenghai fault,which is 2.8 km apart from Yongsheng station in SWW direction.After processing these data by use of a variety of methods for recognizing and extracting the abnormal information,it is found that there had been reappearances of abnormal information of Ms≥6.0 strong earthquakes 4 times during 1995-2001.Their patterns are "left-steep and right-gentle(W tilt as stair) type","down-peak-reflex type","symmetrical concave downward type" respectively;the magnitudes are≥1.00 and ≥9 mm respectively;the time: the latter is 4-6 months earlier than the former;the epicentral distances are ≤140 km.Thus we drew up the guides to the medium-short-term prediction at above two sensitive points for monitoring strong earthquakes.更多还原