논문 상세보기

국내 지진파 크기의 공간적 상관 모델 개발 KCI 등재

Spatial Variation Model of Ground Motion Intensity Measures in South Korea

  • 언어KOR
  • URLhttps://db.koreascholar.com/Article/Detail/439816
구독 기관 인증 시 무료 이용이 가능합니다. 4,000원
한국지진공학회 (Earthquake Engineering Society of Korea)
초록

A seismic intensity map, which describes ground motion distribution due to an earthquake, is crucial for disaster evaluation after the event. The ShakeMap system, developed and disseminated by the USGS, is widely used to generate intensity maps in many countries. The system utilizes a semi-variogram model to interpolate the measured intensities at seismic stations spatially. However, the default semi-variogram model embedded in ShakeMap is based on data from high seismic regions, which may not be suitable for the Korean Peninsula, categorized as a low-to-moderate seismic region. To address this discrepancy, this study aims to develop the region-specific semi-variogram model using local records and a region-specific ground motion model (GMM). To achieve this, we followed these steps: 1) collected records from significant earthquake events in South Korea, 2) calculated residuals between the observed intensities and predictions by the GMM, and 3) created semi-variogram models using weighted least squares regression to better fit short separation distances for PGA, PGV, SA0.2, and SA1.0. We compared the developed semi-variogram models with conventional models embedded in ShakeMap. Validation tests showed that the region-specific semi-variogram model reduced the mean squared error of intensity predictions by approximately 3.5% compared to the conventional model.

목차
A B S T R A C T
1. 서 론
2. 지진파 데이터 및 지반운동예측모델
    2.1 지진파 데이터
    2.2 지반운동예측모델
3. 세미베리오그램 모델 개발
4. 고 찰
    4.1 세미베리오그램 모델 비교
    4.2 진도지도 비교
5. 결 론
감사의 글
REFERENCES
저자
  • 류봉석(한양대학교 건설환경시스템공학과 박사과정) | Ryu Bongseok (Ph.D. Candidate, Department of Civil, Environmental, and System Engineering, Hanyang University)
  • 곽동엽(한양대학교 에리카 건설환경공학과 부교수) | Kwak Dongyoup (Associate Professor, Department of Civil and Environmental Engineering, Hanyang University ERICA)
  • 김지현(한국철도기술연구원 첨단궤도토목본부 선임연구원) | Kim Ji Hyeon (Senior Researcher, Advanced Railroad Civil Engineering Division, Korea Railroad Research Institute) Corresponding author