Supporting data for Challenges in Estimating Long-Term InSAR-Derived Land Subsidence in the Mekong Delta, Vietnam

This dataset contains supporting shapefiles used in the article "Challenges in Estimating Long-Term InSAR-Derived Land Subsidence in the Mekong Delta, Vietnam". It includes point datasets derived from PS InSAR and SBAS InSAR analyses for the Mekong Delta, prepared for spatial comparison of point distribution and coherence. The repository contains five shapefiles: PS_Mekong_Delta.shp: PS InSAR points for the full Mekong Delta study area, corresponding to the spatial extent shown in Figure 1 of the article; PS_Mekong_Delta_selected.shp: PS InSAR points selected for comparative analyses within the five coherence areas shown in Figure 1; SBAS_Mekong_Delta.shp: SBAS InSAR points for the full Mekong Delta study area; SBAS_Mekong_Delta_selected.shp: SBAS InSAR points selected for comparative analyses within the five coherence areas; Coherence_areas.shp: shapefile showing the location of the five selected comparison areas used in the article. The InSAR attribute tables contain only four fields:ID: unique identifier,Lon: longitude,Lat: latitude,coh: coherence. The Coherence_areas.shp attribute table contains only the field: ID. These files are provided to document the spatial distribution of PS and SBAS points and to support the interpretation of the comparison presented in the article. The dataset does not include displacement velocity values or any additional processed deformation products.本数据集包含发表于论文《越南湄公河三角洲基于干涉合成孔径雷达(InSAR)的长期地面沉降估算挑战》中所使用的配套形状文件(shapefile)。数据集包含针对湄公河三角洲开展的永久散射体干涉合成孔径雷达(PS InSAR)与小基线集干涉合成孔径雷达(SBAS InSAR)分析得到的点数据集，用于对点分布与相干性进行空间对比分析。 本仓库共包含5个形状文件(shapefile)： 1. PS_Mekong_Delta.shp：对应论文图1所示研究范围的湄公河三角洲全域永久散射体干涉合成孔径雷达点数据集； 2. PS_Mekong_Delta_selected.shp：从论文图1所示的5个相干性区域中选取、用于对比分析的湄公河三角洲永久散射体干涉合成孔径雷达点数据集； 3. SBAS_Mekong_Delta.shp：湄公河三角洲全域小基线集干涉合成孔径雷达点数据集； 4. SBAS_Mekong_Delta_selected.shp：从5个相干性区域中选取、用于对比分析的湄公河三角洲小基线集干涉合成孔径雷达点数据集； 5. Coherence_areas.shp：标注论文中所用5个选定对比区域位置的形状文件。 所有干涉合成孔径雷达(InSAR)相关的属性表仅包含4个字段：ID（唯一标识符）、Lon（经度）、Lat（纬度）、coh（相干性）。而Coherence_areas.shp的属性表仅包含ID字段。 本数据集用于说明永久散射体与小基线集点的空间分布，辅助解读论文中的对比结果。本数据集未包含位移速率值或任何其他经处理的形变产物。