Dr. Chris Goldfinger will be presenting material that will introduce the subject matter.
Subaqueous paleoseismology is an emerging field that has the potential to reveal long-term earthquake histories, temporal and spatial patterns of rupture, and relative magnitudes and intensities.
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Chris will review the following
- seismic reflection
- slope stability
- turbidity current dynamics
Many of the largest earthquakes are generated at subduction zones or other plate boundary fault systems near enough to the coast that marine environments may record evidence of them. During and shortly after large earthquakes in the coastal and marine environments, a spectrum of evidence may be left behind, mirroring onshore paleoseismic evidence. Shaking or displacement of the seafloor can trigger processes such as turbidity currents, submarine landslides, tsunami (which may be recorded both onshore and offshore), and soft-sediment deformation. Marine sites may also share evidence of fault scarps, colluvial wedges, offset features, and liquefaction or fluid expulsion with their onshore counterparts. (Goldfinger et al., 2010)
- Digital Presentation (6 MB pptx)
- Video (190 MB mp4)