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Title |
A Proposed Sequential InSAR-MEMS Framework for Managing Seismic Vulnerability in Aging Buildings
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Authors |
김형도(Hyung-Do Kim) ; 김민관(Min-Koan Kim) ; 부윤섭(Yoonseob Boo) |
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DOI |
https://doi.org/10.11112/jksmi.2026.30.5.109 |
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Keywords |
도시 노후건축물; InSAR; MEMS 가속도계; 지진관리 사각지대; 구조건전성모니터링; 2단 모니터링 Aging urban buildings; InSAR; MEMS accelerometer; Seismic management blind spot; Structural health monitoring; Two-stage monitoring |
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Abstract |
Aging buildings are increasing in Korean cities, yet statutory inspection, diagnosis, and seismic accelerometer monitoring remain limited to designated facilities and fixed cycles, leaving temporal gaps between inspections, spatial gaps between city-scale information and individual buildings, and informational gaps in unlinked records. To address these seismic management blind spots, this study proposes a two-stage monitoring framework that sequentially links regional displacement screening by satellite interferometric synthetic aperture radar (InSAR) with building-level instrumentation using low-cost micro-electro-mechanical systems (MEMS) accelerometers. In dual-mode operation, Sentinel-1 time-series analysis routinely screens blocks or building groups showing long-term or differential deformation, and after field confirmation, selected buildings are instrumented with time-synchronized MEMS sensors to record earthquake responses. Rather than being merged into a single safety score, the two data streams are linked sequentially through a common building identifier, event time, and quality flags, and each building is classified as observation, inspection candidate, high priority, or decision withheld. These outputs are auxiliary information for inspection prioritization, not a substitute for statutory safety grades.
As a design study based on literature and open institutional data, the framework specifies provisional decision rules, provisional acceptance criteria for each data layer, and a validation structure that pairs each indicator with an independent reference, and its thresholds are to be calibrated in a subsequent limited-area pilot in which the InSAR stage precedes the MEMS stage.
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