基于哨兵主被动遥感的茅尾海潮滩地表形变监测与分析  

Monitoring and analysis of surface deformation of Tidal Flat in Maowei Sea on the basis of Sentinel active and passive remote sensing

作　　者：明小勇 田义超 张强 陶进 张亚丽 林俊良 MING Xiaoyong;TIAN Yichao;ZHANG Qiang;TAO Jin;ZHANG Yali;LIN Junliang(Collage of Resources and Environment,Key Laboratory of Marine Geographic Information Resources Development and Utilization,Beibu Gulf University,Qinzhou 535000,China;Beibu Gulf Ocean Development Research Center,Guangxi Key Laboratory of Marine Environmental Change and Disaster in Beibu Gulf,Beibu Gulf University,Qinzhou 535000)

机构地区：[1]北部湾大学资源与环境学院,海洋地理信息资源开发利用重点实验室,钦州535000 [2]北部湾大学北部湾海洋发展研究中心,广西北部湾海洋环境变化与灾害研究重点实验室,钦州535000

出　　处：《遥感学报》2024年第9期2306-2319,共14页NATIONAL REMOTE SENSING BULLETIN

基　　金：国家自然科学基金(编号:42261024);广西高校人文社会科学重点研究基地项目(编号:JDZD202214);广西基地和人才项目(编号:2019AC20088)。

摘　　要：分析茅尾海潮滩地表形变时空演变及其影响因素,为茅尾海生态环境保护及修复提供科学依据。基于结合PS特征点的SBAS-InSAR技术,利用研究区176景Sentinel-1A SAR影像数据提取了研究区2015年—2022年的地表形变信息,同时结合该地区植被分布、降水、海平面上升和地质背景等数据,借助GIS空间分析技术与数理统计等方法对研究区地表形变的整体特征、时空演变趋势及其影响因素进行了定量化分析。结果表明:(1)在空间维度上,研究时段内研究区地表形变速率介于-43.07—36.22 mm/a,研究区内地表形变不均匀分布明显且总体上呈现轻微抬升趋势,其中,茅尾海东岸和北岸表现为沉降趋势,而康熙岭地区则呈现出抬升趋势。(2)在时间纬度上,各沉降严重区域从整体上随着时间变化呈现不均匀的下沉趋势,4年最大沉降量达-184.9 mm。(3)在形变影响因素上,生物作用、人类活动、水文过程、海平面上升和降水等引起的地貌变化是潮滩地表形变的主要因子。Tidal flats possess significant economic value,environmental importance,and ecological functions,yet their fragile environments are highly susceptible to degradation due to both natural factors and human activities.The changes in surface elevation of tidal flats have a direct impact on the stability of the ecological environment,making the monitoring of tidal flat surface deformation essential for understanding how these ecosystems respond to environmental changes and for predicting the evolution of tidal flat patterns,which in turn provides crucial data for the protection and restoration of the ecological environment.However,the measurement methods currently employed for tidal flat surface deformation are predominantly limited to traditional positioning techniques,which are constrained by the complex environmental factors inherent to tidal flats,thus impeding large-scale estimations.In this context,the emerging InSAR technology offers a promising solution to overcome these limitations.Therefore,this study aims to monitor the surface deformation of the Maowei Sea tidal flats by employing time-series InSAR technology,applying this advanced technique to coastal tidal flat areas.Specifically,we utilized the SBAS-InSAR technique in conjunction with PS feature points,drawing on 176 scenes of Sentinel-1A SAR image data from the study area to extract surface deformation information spanning from 2015 to 2022.By analyzing data on vegetation distribution,precipitation,sea level rise,and geological background within the study area,we conducted a comprehensive examination of the overall characteristics,spatiotemporal evolution trends,and influencing factors of surface deformation in the region.The results show that:(1) The surface deformation of the tidal flat area demonstrates significant spatial heterogeneity,with distinct subsidence and uplift trends across different regions.Over the study period,the surface deformation rate within the study area ranged from -43.07 to 36.22 mm per annum,with deformation being unevenly di

关 键 词：遥感 地表形变 INSAR 哨兵 时序分析 潮滩 茅尾海红树林 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] P2[自动化与计算机技术—控制科学与工程]