哨兵-1A合成孔径雷达的深圳围填海区域地面沉降监测

为更好地监测和掌握深圳围填海区域在填海造地工程结束后的地面沉降情况,通过哨兵-1A影像和时间序列合成孔径雷达干涉测量方法研究了深圳围填海区域2016-2019年的地面形变.结果 表明:深圳围填海区域的地面形变速率为-19.85～ 15.60 mm/a,深圳东部宝安区和西部福田区的地面沉降相对稳定,南山区监测到大面积的地面沉降;和年均降雨量的对比分析显示了南山区的地面沉降存在明显的季节变化规律;靠近海岸的形变点目标受降雨的影响明显大于其他点,与深圳的沉积层厚度存在较为显著的相关性.

Monitoring and Analysis of Land Subsidence in Shenzhen reclamation area Based on Sentinel-1A Interferometric Synthetic Aperture Radar

In order to better monitor and grasp the land subsidence of the Shenzhen reclamation area after the reclamation project is completed, Sentinel-1A image and Time-series synthetic radar interferometry method was used to investigate the land deformation in Shenzhen reclamation area from 2016 to 2019. The results show that The land speed change rate of the Shenzhen reclamation area is -19.85 ~ 15.60 mm/year, the land subsidence in Baoan District in eastern Shenzhen and Futian District in western China is relatively stable, a large area of land subsidence was detected in Nanshan District. The comparative analysis with the average annual rainfall shows that there are obvious seasonal changes in land subsidence in Nanshan District. The deformation point target close to the coast is obviously affected by rainfall than other points, and there is a clear correlation with the thickness of the sedimentary layer in Shenzhen.