| 基于SBAS技术监测粤港澳大湾区核心城市地表形变 |
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| 引用本文： | 李慧,胡波,廖佳.基于SBAS技术监测粤港澳大湾区核心城市地表形变[J].测绘工程,2020(3):46-50. |
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| 作者姓名： | 李慧 胡波 廖佳 |
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| 作者单位： | 广东工业大学;中国电建集团中南勘测设计研究院有限公司 |
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| 摘 要： | 粤港澳大湾区目前是我国最开放、经济活力最强的地区之一。但随着城市化进程加快,地表形变问题日益严重,逐渐威胁到城市基础设施的安全和健康。时序InSAR技术在监测大范围城市地表形变领域有着独特的优势。研究采用72景Sentinel-1A卫星影像数据,利用SBAS技术对粤港澳大湾区核心城市进行地表形变监测。研究结果表明,在广州市荔湾区、越秀区、天河区发现小范围的地表沉降现象;珠海市的斗门区和横琴岛是形变现象较集中的区域;同时,在澳门的国际机场和氹仔岛填海区均发现沉降现象;研究发现监测区的地表形变均与形变区的地质条件或工程施工有关。
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| 关 键 词： | INSAR SBAS 粤港澳大湾区 地表形变 Sentinel-1A |
Monitoring the surface deformation of core cities in the Guangdong-Hong Kong-Macao Greater Bay Area based on SBAS technology |
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| LI Hui,HU Bo,LIAO Jia.Monitoring the surface deformation of core cities in the Guangdong-Hong Kong-Macao Greater Bay Area based on SBAS technology[J].Engineering of Surveying and Mapping,2020(3):46-50. |
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| Authors: | LI Hui HU Bo LIAO Jia |
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| Institution: | (Guangdong University of Technology, Guangzhou 510006, China;China Power Construction Corporation Zhongnan Survey Design & Research Institute Co., Ltd,Changsha 410014,China) |
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| Abstract: | The Guangdong-Hong Kong-Macao Greater Bay Area(GBA)is one of the most open and dynamic economic regions in China.However,with the acceleration of urbanization,the deformation of the surface is becoming increasingly serious,which gradually threatens the safety and health of urban infrastructure.Time series InSAR technology has unique advantages in the field of monitoring large-scale urban surface deformation.In this study,72 Sentinel-1A satellite images and SBAS technology are used to monitor the surface deformation of core cities in the GBA.The result shows that small-scale surface subsidence is found in Liwan District,Yuexiu District,and Tianhe District of Guangzhou City.Doumen District and Hengqin Island in Zhuhai are regions where deformation is concentrated.At the same time,settlements are found at the Macao International Airport and Dangzai Island.And it is found that the surface deformation in the monitoring area is related to the geological conditions or engineering construction in the deformation area.The research result can provide reliable data support and direction for disaster prevention and mitigation in the GBA,which is of great significance for urban security and stability. |
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| Keywords: | InSAR SBAS Guangdong-Hong Kong-Macao Greater Bay Area surface deformation Sentinel-1A |
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