[P39] Empirical fragility asssement of buildings exposed to ground shaking and tsunami based on 2011 Great Japan earthquake data
| Affiliation | EPICentre, |
|---|---|
| Author | ioannou ioanna |
| Co-Author | Silvia Bertelli(University College London) Anawat Suppasri(Tohoku University) Susumu Ohno(Tohoku University) Akihiro Shibayama(Tohoku University) Tiziana Rossetto(University College London) |
Keywords
- Statistical analysis
- Generalised linear models
- Post-disaster
Outline
The 2011 Great Eastern Japan earthquake, with moment magnitude Mw = 9.1, is widely considered as one of the most destructive events in Japanese history. This event is mainly known for the devastating impact of the tsunami which killed over 15,000 people, destroyed/washed away over 120,000 buildings and led to the Fukushima nuclear disaster [16]. Post-disaster data for building inventory damaged within the inundation zone has been used to develop a significant number of tsunami fragility curves (e.g. [17-20]) due to it being one of the first ever large tsunami to hit a developed country, and due to the systematic collection of detailed damage data. More recently, damage data inland of the inundation zone have also been used to empirically assess the fragility of the buildings to ground shaking only. Nonetheless, no study to date attempted to examine the combined impact of the ground shaking and tsunami on the fragility of the building inventory. This study aims to close this gap by utilising data from the Ministry of Land, Infrastructure, Transport, and Tourism of Japan, as well as seismic data from USGS and local seismic networks and inundation depth data to empirically explore the combined impact of the two hazards.
