论文部分内容阅读
甘肃省位于我国地形起伏较大的青藏高原块体的边缘,历史地震多而强,是我国地震活动的主要地区之一。由统计分析求得;70—85年本区共发生M_s≥2.0的地震2030次,这些地震都属正常时期的弱震活动。 作者根据历史地震活动和近期弱震分布和地质构造背景,将这一地区划分为四个分区,分别给出了各分区的活动频度,b值,蠕变曲线斜率的正常值。
Gansu Province is located on the edge of the Tibetan Plateau block with a large undulating topography in China. It has many historical earthquakes and is one of the major areas of seismic activity in China. Calculated by statistical analysis; 2030 earthquakes with M_s≥2.0 occurred in 70-85 years, all of these earthquakes are normal earthquakes. Based on the historical seismic activity and recent weak earthquake distribution and geological tectonic setting, the author divides this area into four subareas, and gives the normal values of the slope of activity frequency, b value and creep curve of each subarea.