北京来广营地区地面沉降时空演化特征  

Temporal and Spatial Characteristics of Land Subsidence in Laiguangying,Beijing

作　　者：杨翠玉 王彦兵[1,2,3] 赵亚丽 郭亚航 黄世强 YANG Cuiyu;WANG Yanbing;ZHAO Yali;GUO Yahang;HUANG Shiqiang(School of Resources, Environment and Tourism, Capital Normal University, Beijing 100048, China;Key Laboratory of 3D Information Acquisition and Application, Ministry of Education,Capital Normal University, Beijing 100048, China;The State Key Laboratory Breeding Base of Urban Environmental Process and Digital Simulation,Capital Normal University, Beijing 100048, China)

机构地区：[1]首都师范大学资源环境与旅游学院,北京100048 [2]首都师范大学三维信息获取与应用教育部重点实验室,北京100048 [3]首都师范大学城市环境过程与数字模拟国家重点实验室培育基地,北京100048

出　　处：《遥感信息》2020年第5期134-139,共6页Remote Sensing Information

基　　金：国家自然科学基金项目(41671417);北京市教委面上项目(KM201610028013);虚拟现实技术与系统国家重点实验室开放基金项目(01117220010020);科技创新服务能力建设项目(19530050175);北京市自然科学基金项目(8202009)。

摘　　要：针对北京来广营地区西北和东南2处不均匀沉降问题,在利用永久散射体干涉测量方法获取长时间序列地面沉降信息的基础上,提出用区域重心法来分析来广营的地面沉降时空演化特征。研究发现:2004—2015年间,来广营地区年均地面沉降速率为-98^-25 mm/a;地面沉降重心由西北向东南方向迁移,累积迁移1516.43 m,迁移的平均方位角为110.56°,迁移方向以东西向为主,南北向为辅,累积向东迁移1388.17 m,向南迁移586.73 m;迁移速度呈逐年递减趋势,2014年迁移速度达极小值。Aiming at the uneven land subsidence in the northwest and southeast of Laiguangying area in Beijing,a long sequence data of land subsidence in Laiguangying was obtained by permanent scatterer interferometry(PS-InSAR)technology.For quantitatively analyzing the uneven land subsidence,the paper proposed the regional center of gravity method to analyze the temporal and spatial evolution in Laiguangying area.From June 2004 to May 2015,the average annual land subsidence rate in this area was between-98 and-25 mm/a.The center of gravity of the land subsidence moved from northwest to southeast,the total amount of the movement was 1516.43 meters and the average azimuth was 110.56°.The movement direction was mainly from east to west,north to south was the auxiliary,and the total amount of the eastward and southward movement was 1388.17 meters,586.73 meters,respectively.The movement rate was decreasing year by year,and minimum movement rate was in 2014.

关 键 词：地面沉降 区域重心法 PS-InSAR技术 时空演化特征 迁移距离 方位角 

分 类 号：P642.26[天文地球—工程地质学]