Japanese project successfully identifies new sinkhole risk spots within a city using satellites

Japanese specialists have used satellite data to detect new locations in Guatemala City, the capital of the Central American state of Guatemala, which are at risk from sinkholes or landslides. The data was collected using synthetic aperture radar (SAR) on satellites developed and operated by Tokyo-based enterprise Synspective. The operation was an information gathering and pilot project funded by the Japan International Cooperation Agency (JICA). The project ran for three years, from July 2018 to June 2021. It saw Synspective use its ground deformation monitoring service, called Land Displacement Monitoring (LDM), to undertake a ground deformation analysis covering Guatemala City and its suburbs. The programme identified new places at risk of sinkage, which had not been identified by conventional survey methods.

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