广东工业大学学报 ›› 2023, Vol. 40 ›› Issue (01): 83-91.doi: 10.12052/gdutxb.220101
胡波, 陈邦鑫
Hu Bo, Chen Bang-xin
摘要: 地表形变引发的地质灾害屡见不鲜,尤其是在城市区域,其严重阻碍了城市化的可持续发展。为了评估城市地表形变引发地质灾害的风险,高时间空间分辨率的地表形变监测分析变得尤为重要。本文基于2019年1月至2021年1月的Sentinel-1A卫星影像,利用SBAS-InSAR以及PS-InSAR技术获取南昌市地表形变的时间序列,并结合小波周期分析和灰色关联度分析评估形变区域与气候环境的相关性。研究表明,南昌市的中心城区受到城市建设和黏土层厚度的影响,表现出大范围的沉降信号;东南部的农业生态地区由于地下水的补充而表现出抬升的信号。周期分析进一步表明南昌市地表形变皆受降水量变化的影响。本研究结合外部数据,从多个角度考察了地铁线路在变形幅度较大的地区发生沉降灾害的可能性,为防灾减灾提供参考。
中图分类号:
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