Loss Estimation in Southeast Korea from a Scenario Earthquake using the Deterministic Method in HAZUS

• 영문명: Loss Estimation in Southeast Korea from a Scenario Earthquake using the Deterministic Method in HAZUS
• 발행기관: 한국방재학회
• 저자명: Kim, Kwang-Hee Kang, Su-Young
• 간행물 정보: 『3. 한국방재학회 학술대회논문집』2009년, 43~54쪽, 전체 12쪽
• 주제분류: 공학 > 기타공학
• 파일형태: PDF
• 발행일자: 2009.02.26

영문 초록

Strong ground motion attenuation relationship represents a comprehensive trend of ground shakings at sites with distances from the source, geology, local soil conditions, and others. It is necessary to develop an attenuation relationship with careful considerations of characteristics of the target area for reliable seismic hazard/risk assessments. In the study, observed ground motions from the January 2007 magnitude 4.9 Odaesan earthquake and the events occurring in the Gyeongsang provinces are compared with the previously proposed ground attenuation relationships in the Korean Peninsula to select most appropriate one. In the meantime, a few strong ground motion attenuation relationships are proposed and introduced in HAZUS, which have been designed for the Western United States and the Central and Eastern United States. The selected relationship from the ones for the Korean Peninsula has been compared with attenuation relationships available in HAZUS. Then, the attenuation relation for the Western United States proposed by Sadigh et al. (1997) for the Site Class B has been selected for this study. Reliability of the assessment will be improved by using an appropriate attenuation relation. It has been used for the earthquake loss estimation of the Gyeongju area located in southeast Korea using the deterministic method in HAZUS with a scenario earthquake (M=6.7). Our preliminary estimates show 15.6% damage of houses, shelter needs for about three thousands residents, and 75 life losses in the study area for the scenario events occurring at 2 A.M. Approximately 96% of hospitals will be in normal operation in 24 hours from the proposed event. Losses related to houses will be more than 114 million US dollars. Application of the improved methodology for loss estimation in Korea will help decision makers for planning disaster responses and hazard mitigation.

키워드

HAZUS earthquake loss estimation deterministic method attenuation relation