菏泽地区地壳结构特征与地震  

CHARACTERISTICS OF CRUSTAL STRUCTURES IN HEZE REGION AND EARTHQUAKES

作　　者：任青芳[1] 张成科[1] 赵金仁[1] 张先康[1] 祝治平[1] 

机构地区：[1]国家地震局地球物理勘探大队

出　　处：《华北地震科学》1992年第3期45-52,共8页North China Earthquake Sciences

摘　　要：本文利用菏泽～长治剖面东段和襄城～章丘剖面中段深地震测深资料进行二维计算与分析解释。结果显示菏泽地区地壳速度结构在横向上、纵向上具有明显的差异。莫氏界面起伏变化大,在菏泽附近其埋深约35km。统计结果显示本区地震多发生在中上地壳,表示它与深地壳结构特征十分密切。In this paper, 2-D calculation and interpretation are carried out respectively by the DSS data of the eastern section of Heze-Changzhi and the middle section of Xiangcheng-Zhangqiu profiles. The results show that the crustal velocity structures are obvionsly differ-ent in lateral and vertical directions in Heze region. The ups and downs of moho are consider-able, and its depth near Heze is about 35 km. Statistical results show that the most of the earthquakes occurred in the middle and upper crust in this region. This indicates that the earthquakes are closely related to the characteristics of the deep crustal structures.

关 键 词：深地震测深 地壳速度结构 低速层 

分 类 号：P315[天文地球—地震学]