测绘学报 ›› 2025, Vol. 54 ›› Issue (7): 1178-1191.doi: 10.11947/j.AGCS.2025.20250061

• 大地测量学与导航 • 上一篇    下一篇

融合多轨道TS-InSAR的广域海岸带地面沉降监测及成因解析——以山东省为例

李鹏1,2(), 白建博1,2(), 李振洪3, 王厚杰1,2   

  1. 1.中国海洋大学海洋地球科学学院河口海岸带研究所,山东 青岛 266100
    2.青岛海洋科技中心海洋地质过程与环境功能实验室,山东 青岛 266061
    3.长安大学地质工程与测绘学院,陕西 西安 710054
  • 收稿日期:2025-02-17 修回日期:2025-05-29 出版日期:2025-08-18 发布日期:2025-08-18
  • 通讯作者: 白建博 E-mail:pengli@ouc.edu.cn;baijianbo@stu.ouc.edu.cn
  • 作者简介:李鹏(1984—),男,博士,副教授,研究方向为海岸带沉降监测与环境遥感。E-mail:pengli@ouc.edu.cn
  • 基金资助:
    山东省自然科学基金(ZR2024MD061);国家自然科学基金(42041005-4)

Wide area coastal subsidence monitoring and driver analysis with multi tracks of TS-InSAR—a case study of Shandong province

Peng LI1,2(), Jianbo BAI1,2(), Zhenhong LI3, Houjie WANG1,2   

  1. 1.Institute of Estuarine and Coastal Zone, College of Marine Geosciences, Ocean University of China, Qingdao 266100, China
    2.Laboratory of Marine Geology, Qingdao Marine Science and Technology Center, Qingdao 266061, China
    3.College of Geological Engineering and Geomatics, Chang'an University, Xi'an 710054, China
  • Received:2025-02-17 Revised:2025-05-29 Online:2025-08-18 Published:2025-08-18
  • Contact: Jianbo BAI E-mail:pengli@ouc.edu.cn;baijianbo@stu.ouc.edu.cn
  • About author:LI Peng (1984—), male, PhD, associate professor, majors in coastal subsidence monitoring and coastal remote sensing. E-mail: pengli@ouc.edu.cn
  • Supported by:
    Shandong Provincial Natural Science Foundation(ZR2024MD061);The National Natural Science Foundation of China(42041005-4)

摘要:

海岸带地面沉降会加剧相对海平面上升,增加与洪水相关的沿海基础设施淹没和土壤盐渍化风险。山东作为中国东部沿海经济大省,其海岸线长度约占全国的1/6,但是关于该省地面沉降时空演变特征及关键驱动因素尚不清楚。本文利用2019—2022年的Sentinel-1雷达卫星遥感影像,开展了多轨道合成孔径雷达干涉测量(InSAR)时序分析工作,提出了一种适用于陆海交接区域的InSAR多图幅拼接方法,校正了不同图幅之间的系统性偏差,得到了广域一致性良好的全省地面沉降速率图,探明了多个沉降速率超过50 mm/a的快速沉降漏斗。结合Sentinel-2多光谱遥感影像、形变时间序列和主成分分析方法,揭示了非均质沉降漏斗的时空变化及其驱动因素。结果表明,地下水与煤矿开采相关的人类活动是造成山东省地面沉降的主要因素。本文期望为大范围沿海地面沉降监测和风险管理提供技术支持和科学依据,进一步提升对沿海地质灾害风险的认识。

关键词: 海岸带地面沉降, 时序InSAR, 多轨道拼接, Sentinel-1, Sentinel-2, 主成分分析, 驱动因素, 人类活动

Abstract:

Coastal subsidence will exacerbate relative sea level rise and increase the risk of flood-related coastal infrastructure inundation and soil salinization. As a major economic province in the east coast of China, the coastline of Shandong accounts for about 1/6 of the country. However, the spatiotemporal evolution characteristics and key drivers of land subsidence in Shandong are still unclear. In this paper, we conducted multi-track radar interferometry (InSAR) time series analysis with the Sentinel-1 imagery from 2019 to 2022. Firstly, we proposed a multi-track InSAR uncontrolled splice method applicable to the interface region between land and sea to correct the systematic bias of interferograms from adjacent tracks. Then, we generated a large-scale land subsidence rate map of the whole province with good consistency. Furthermore, we found multiple sinking funnels over 50 mm/a. Based on Sentinel-2 multispectral remote sensing images, deformation time series and principal component analysis, we revealed the spatiotemporal change of the heterogeneous sedimentation funnel and its drivers. The results show that human activities related to groundwater pumping and coal mining are the main factors causing land subsidence in Shandong province. This study is expected to provide technical support and scientific basis for large-scale coastal subsidence monitoring and risk management, and further improve the understanding of coastal geological disaster risk.

Key words: coastal subsidence, time-series InSAR, multi-track splicing, Sentinel-1, Sentinel-2, principal component analysis, driving factor, human activities

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