田枭,林敦灵,刘洋,韩森,董梦,李航昊

• 1:武汉大学测绘学院
• 2:北京市勘察设计研究院有限公司

摘要(Abstract)：

针对永定河流域(北京段)地表沉降及其与地下水位变化、生态补水之间的关系问题，利用小基线集合成孔径雷达干涉测量技术对覆盖研究区域的32景升轨雷达影像进行处理，提取了地表形变时空分布特征，分析了地表形变与地下水位变化的关系，并探讨了生态补水对区域地表沉降的影响。结果表明，流域上部具有一定的沉降区域，主要沉降速率为5～20 mm/a。地表形变与地下水位变化之间存在显著相关性：流域上部地下水位整体呈下降趋势，区域地表沉降相对严重；流域中下部地下水位整体呈上涨趋势，区域地表沉降得到遏制。生态补水对区域地表沉降有显著影响，但具体类型与区域地形地质、河道特征相关。

关键词(KeyWords)： 永定河;SBAS-InSAR;地表形变;地下水位;生态补水

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(41874011);; 国家重点研发计划项目(2018YFC1503603)

作者(Author): 田枭,林敦灵,刘洋,韩森,董梦,李航昊

DOI: 10.16251/j.cnki.1009-2307.2022.09.012

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