Surface ruptures and fault damage zones for earthquake hazard assessment
Abstract
Large earthquakes cause strong ground motions and surface ruptures. The earthquake damage depends on the earthquake magnitude, seismic wave characteristics, the distance from epicenter, the depth of focus, geologic foundation, and etc. It is difficult to predict the exact time and location of future earthquake with current technology. However, if we have the accurate information on active fault locations or potential surface ruptures, we could predict and avoid the earthquake hazards on the earthquake prone areas, especially for site selection for importance facilities. We should consider several factors to be considered to predict earthquake hazards such as surface ruptures, active faults, earthquake propagation characteristics, damage zones, and respect distances. We mainly focus on the fault damage zones and the respect distances for specific site selection. It is difficult to estimate the proper respect distances against earthquake hazards around the active faults or surface ruptures because the characteristics of geologic faults and earthquake ruptures are developed asymmetric displacement and damage patterns. Therefore, we should assess and consider both fault damage zone and respect distance to evaluate relatively safe regions. This will be helpful for earthquake hazard assessment and proper site selection against earthquake hazards in potential earthquake prone areas.
- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2019
- Bibcode:
- 2019AGUFM.S51E0454J
- Keywords:
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- 7209 Earthquake dynamics;
- SEISMOLOGY;
- 7215 Earthquake source observations;
- SEISMOLOGY;
- 7230 Seismicity and tectonics;
- SEISMOLOGY;
- 7290 Computational seismology;
- SEISMOLOGY