摘要
为编制湖北省地壳垂直形变图,收集了自1927年至1986年施测的一万多公里的水准测量资料,并从中筛选出可信度高、复测间隔年限长的七千余公里Ⅰ、Ⅱ等水准测量成果,经正高与重力等项改正后,参加全国水准网伪逆整体平差,求得湖北境内各水准点的垂直运动年速率,据此绘制速度等值线图。该图基本上反映出省区地壳东降西升的继承性新构造运动;黄陵背斜相对于江汉与秭归盆地继续呈上升趋势;等值线走向与断层走向大致相吻合。该图为判别地壳稳定性和断层活动规律提供了重要参考资料。
About 7000km releveling lines are selected from more than 10000km first and second order leveling lines observed from 1927 to 1986. After corrected the height difference with normal height correction and gravity correction, the data are totally adjusted with the rank defect nethod of Chinese Ieveling network. Then the rate of vertical movements in Hubei province is obtained and the vertical deformation rate isogram is drawed. The isogram reflected that the Huanlin anticline is still running to go up relativent to the Jianhan and Zigue basin, and that the trend of the isogram is coincident with the strike of faults approximately. It provides the scientific basis for distinguishing the crustal stability and the fault activity. It is also useful to estimate the earthquake situation of Hubei province and to develop the geoscience research.
出处
《地壳形变与地震》
CSCD
1992年第2期74-78,共5页
Crustal Deformation and Earthquake
关键词
形变图
地壳运动
稳定性
编制
map of deformation, crustal movement, stability
