1. The hazard of coseismic gaps: the 2021 Fukushima earthquake.
- Author
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Kiser, Eric and Kehoe, Haiyang
- Subjects
- *
EARTHQUAKE aftershocks , *TSUNAMI warning systems , *EARTHQUAKE hazard analysis , *EARTHQUAKES , *FUKUSHIMA Nuclear Accident, Fukushima, Japan, 2011 , *SEISMIC event location , *EARTH sciences - Abstract
Subduction zones are associated with significant seismic hazards around the world and determining the future locations of large earthquakes within these systems is a perpetual challenge of the Earth sciences. This study presents back-projection results from the 2021 M w 7.1 Fukushima earthquake which show that the rupture area of this event filled a previously identified coseismic gap within the rupture area of the 2011 M w 9.1 Tohoku-oki earthquake. These results, combined with observations of a similar coseismic gap from the 2010 M w 8.8 Maule, Chile earthquake that was subsequently filled by a M w 7.1 aftershock, demonstrate that future assessments of seismic hazards following giant earthquakes should include the identification of coseismic gaps left within main shock rupture areas. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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