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The February 2023 Mw 7.8 Earthquake impacted southeast Turkey and northern Syria. The earthquake and the following magnitude 7.5 event caused more than 50,000 fatalities, resulted in the collapse of approximately 35,000 structures, including a number of recently built buildings, and is estimated to have resulted in more than $90 billion direct damage. Some of the causes of these failures are attributed to a lack of engineering oversight of construction. Following the earthquake, a team of experts from the US and Turkish engineers. The Jet Proportion Lab (JPL) supplied the satellite data that showed the change of a geographical point, and this data was used to develop the damage proxy map for several key cities in the impacted areas to identify the damage areas that would require rapid on-site assessment. The total city area of various cities was computed based on the GIS map information. Using remote (satellite) images, the area of damage zones was computed. For the target cities, damage ratios varying from 3% to 40% were computed. Following the initial damage assessment, a survey of thousands of light and moderately damaged buildings was conducted using a state-of-the-art app-based assessment survey to identify the vulnerability classification and cost-efficient repair method for each damage type. Bill of Quantities (BOQs) and initial repair cost estimates were generated. The data was uploaded to a secure server and households were able to access data regarding their own building using a quick-response code (QR code). enabled households to repair their residences rapidly. Lessons from both remote damage assessment and rapid analysis of repairs for lightly damaged structures are critical for future disaster recovery efforts in California.
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