摘要
利用1998—2006年天津地区水准观测资料,对该区地面沉降运动进行研究,结果表明:天津地区沉降特征表现为北弱南强,以39.3°N为界,以北地区沉降幅度非常小,以南地区沉降幅度较大;1998—2002年,中部偏东地区为沉降速率的高值区,2002—2004年该区沉降速率明显减缓;2004—2006年沉降速度加大。
We use the leveling data from 1998-2006 to analyze the dynamic characteristics of land subsidence in Tianjin. The results show that the land subsidence is larger in south of Tianjin than that of north, which the subsidence rate is very small from north boundary of Tianjian to 39.3°N, and the subsidence rate is large from 39.3°N to the south boundary. The results of multisection reveal that the subsidence rate is large in the east region of middle Tianjin from 1998-2002, while it decelerates from 2002-2004 and it increases from 2004-2006.
出处
《大地测量与地球动力学》
CSCD
北大核心
2013年第5期11-15,共5页
Journal of Geodesy and Geodynamics
基金
中国地震局地震科技星火计划(XH13037Y)
中国地震局地震行业科研专项(200908028)
关键词
天津地区
水准资料
误差分析
地面沉降
动态特征
Tianjin region
leveling data
error analysis
land subsidence
dynamic characteristic
