The Portoviejo city, located in the central part of the Ecuadorian Pacific Coast (province of Manabí), was severely affected during the Pedernales Mw 7.8 earthquake of April 16, 2016, accompanied by coseismic liquefaction phenomena that induced processes of ground subsidence, lateral spreading, sinkhole, and sand boils. The present study proposes the detection and delimitation of the areas affected by the relief deformation, associated liquefaction processes, which occurred in the urban area of Portoviejo city and especially in the Zero Zone of greater destruction after the earthquake, through the application of Differential Interferometry Synthetic Aperture Radar (INSAR) methodology, using Sentinel 1A satellite images, plus the support of geological–geotechnical data obtained from boreholes and standard penetration tests to evaluate the liquefaction potential of the layers of the subsoil based on the Potential Liquefaction Index, considering the seismic scenario of a_max 0.5 g for the urban area and the Zero Zone. This procedure allowed the delimitation of areas of high seismic risk for the proper coordination and management of the construction and reconstruction processes in the city of Portoviejo and specifically in the Ground Zero.

位于厄瓜多尔太平洋海岸中部（马纳比省）的波托维耶霍市在2016年4月16日的Pedernales Mw 7.8地震中受到严重影响，并伴随着同震液化现象，导致地面沉降，横向扩展，污水坑和沙子沸腾。本研究提出了通过微分干涉合成技术的应用，对波多维乔城市区，特别是地震后破坏程度较大的零区发生的浮雕变形及相关的液化过程的影响区域进行检测和划定。使用Sentinel 1A卫星图像的孔径雷达（INSAR）方法，一个_最大0.5克为市区和零区。该程序允许划定高地震危险区域，以便适当协调和管理Portoviejo市（尤其是零地带）的建筑和重建过程。