应用模式识别方法确定乌鲁木齐以西的潜在震源区

USING PATTERN RECOGNITION TO JUDGE THE POTENTIAL FOCAL ZONE ON THE WEST OF URUMQI DISTRICT

根据乌鲁木齐以西地区与强震活动有关的地质、地貌、地球物理等特征,应用cora—3方法对乌鲁木齐以西的潜在震源区进行模式识别,结果表明,容易发生强震的地区主要与断裂及其端点、拐点、交点有关,而且其数目越大判定为强震可能发生地点的概率越大,1943——1989年已发生地震的五个地区,均为未来可能发生强震的地点。

Based on the characteristics of geology,geomorphy and geophysics associated with strong earthquake activities on the west of Urumqi district,Approach Cord-3 is used to do the pattern recognition on the potential focal zone west of Urumqi. The result indicated that the areas prone to strong earthquakes are mostly related to some fractures,especially on their end points,corner periods and intersections. The more numbers of such fractures, the more probabilities of strong earthquakes occurrence. The five regions which occurred earthquakes during 1943-1989 are determined to be the places with the probability of strong earthquake occurrence in future.