南京大学学报(自然科学版) ›› 2019, Vol. 55 ›› Issue (3): 370380.doi: 10.13232/j.cnki.jnju.2019.03.004
所属专题: 测试专题
董少春*,种亚辉,胡 欢,黄璐璐
Dong Shaochun*,Chong Yahui,Hu Huan,Huang Lulu
摘要: 地面沉降不仅会对城市公共基础设施造成安全隐患,也会对当地的经济、环境和可持续发展造成影响. 常州市位于我国著名的苏锡常地面沉降带,也是长三角地区的重要城市之一. 地面沉降监测一直是该地区掌握地面沉降状态、预防地面沉降灾害的重要举措. 利用2015年5月至2018年5月期间的36景Sentinel-1A的IW(Interferometric Wide Swath)模式的SLC(Single Look Complex) SAR(Synthetic Aperture Radar)数据,基于时序InSAR(Interferometric Synthetic Aperture Radar)方法对常州市地面沉降进行了监测,获得了常州地区该时间段年均沉降速率和时序地表累计形变图,揭示了观测期间常州市各地区详细的地面沉降时空分布和变化特征. 结果表明,在2015-2018年整个观测期间,常州地区地表形变呈现出“整体相对稳定,武进区局部沉降和抬升较为突出”的特征,与该地区历史沉降监测结果具有良好的一致性和延续性. 这一监测结果有助于全面掌握常州地区最近的地面沉降状况,建立并完善长期、连续的地面沉降时空演化监测记录,为城市基础设施选址、规划以及建立预警预报机制等提供决策依据.
中图分类号:
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