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Shape Similarity Analysis for Verification of Hazard Map for Storm Surge : Shape Criterion

폭풍해일 침수예상도 검증을 위한 형상유사도 분석 : 형상기준

  • Kim, Young In (Department of Civil Engineering, Hongik University) ;
  • Kim, Dong Hyun (Department of Civil Engineering, Hongik University) ;
  • Lee, Seung Oh (Department of Civil Engineering, Hongik University)
  • 김영인 (홍익대학교 토목공학과) ;
  • 김동현 (홍익대학교 토목공학과) ;
  • 이승오 (홍익대학교 토목공학과)
  • Received : 2019.09.05
  • Accepted : 2019.09.23
  • Published : 2019.09.30

Abstract

The concept of shape similarity has been applied to verify the accuracy of the SIND model, the real-time prediction model for disaster risk. However, the CRITIC method, one of the most widely used in geometric methodology, is definitely limited to apply to complex shape such as hazard map for coastal disaster. Therefore, we suggested the modified CRITIC method of which we added the shape factors such as RCCI and TF to consider complicated shapes. The matching pairs were manually divided into exact-matching pairs and mis-matching pairs to evaluate the applicability of the new method for shape similarity into hazard maps for storm surges. And the shape similarity of each matching pair was calculated by changing the weights of each shape factor and criteria. Newly proposed methodology and the calculated weights were applied to the objects of the existent hazard map and the results from SIND model. About 90% of exact-matching pairs had the shape similarity of 0.5 or higher, and about 70% of mis-matching pairs were it below 0.5. As future works, if we would calibrate narrowly and adjust carefully multi-objects corresponding to one object, it would be expected that the shape similarity of the exact-matching pairs will increase overall while it of the mis-matching pairs will decrease.

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