InSAR information to record dynamic changes on the surface using remote sensor has been obtained for the Metropolitan Area of San Salvador and compared with surface dynamic situation and fixed GPS surface movement information. The city is located in an active tectonic depression between the tectonic remains of ancient volcanoes and active volcanic centers. This area has been historically affected by earthquakes, volcanic activity, erosion, mass movements, and flooding. The morphology of the area has been changed by human activities, most of the time without any respect to natural processes thus increasing the problems. There are sectors that show subsidence close to Ilopango Caldera that could be connected to diastrophic block tectonic movements connected to post-seismic episodes after 2012 earthquake, and aquifer level changes due effects of climate change and overexploitation of aquifers. These movements may increase the huge problems of erosion and mass wasting through las Cañas basin. In addition, after 2017 seismic swarm a horizontal movement was recorded with the satellite radar interferometry (InSAR) in two areas, which reflects the possible movement of faults that crosses the area of study. This type of information provides important data for the decision-making of land, protection and mitigation zones, monitoring of governmental institutions, and for regional planning.

已在圣萨尔瓦多的大都市区获得了使用遥感器记录地面动态变化的InSAR信息，并将其与地面动态情况和固定的GPS地面运动信息进行了比较。该市位于古代火山构造遗迹与活跃火山中心之间的活跃构造凹陷中。历史上该地区受到地震，火山活动，侵蚀，群众运动和洪水的影响。该区域的形态已因人类活动而改变，大多数时候在不考虑自然过程的情况下增加了问题。在2012年地震之后，某些区域显示出与Ilopango Caldera接近的沉降，这可能与灾难性的块状构造运动有关，而后者与地震后的地震事件有关，以及由于气候变化和含水层过度开采而造成的含水层水位变化。这些运动可能会增加整个拉斯卡纳斯盆地侵蚀和大量浪费的巨大问题。此外，2017年地震群之后，利用卫星雷达干涉仪（InSAR）在两个区域记录了水平运动，这反映了跨越研究区域的断层的可能运动。此类信息为土地，保护和减灾区的决策，政府机构的监视以及区域规划提供了重要的数据。在2017年地震群之后，利用卫星雷达干涉仪（InSAR）在两个区域记录了水平运动，这反映了跨越研究区域的断层可能运动。此类信息为土地，保护和减灾区的决策，政府机构的监视以及区域规划提供了重要的数据。在2017年地震群之后，利用卫星雷达干涉仪（InSAR）在两个区域记录了水平运动，这反映了跨越研究区域的断层可能运动。此类信息为土地，保护和减灾区的决策，政府机构的监视以及区域规划提供了重要的数据。