M 7.8 2016 Kaikoura Earthquake

Our team including the broader GNS seismology team provided not only timely response information to NZ decision makers (NZ government, Ministry of Civil Defence and Emergency Management, Engineering communities etc) but also contributed critical science information:

  • Summary of ground motion and earthquake source characteristics (Kaiser et al., 2017)
  • Simulations of ground motions and tsunami wave propagation resulting from the 2016 M7.8 Kaikōura earthquake (Kaneko et al., 2017)
  • Dynamic triggering on slow slip events on the Hikurangi subduction fault in the North Island (Wallace et al., 2017)
  • Energy partitioning during the M7.8 Kaikōura earthquake inferred from estimated fault-weakening parameters (Kaneko et al., 2017)
  • Detailed finite fault models of the M7.8 Kaikōura earthquake (Holden et al., 2017)

Simulations of ground motions and tsunami wave propagation resulting from the 2016 M7.8 Kaikōura (NZ) earthquake. https://www.youtube.com/watch?v=1DybzjUsjN0

Kaikoura-quake A

Peak ground accelerations in the horizontal (red) and vertical (blue) directions recorded at GeoNet strong-motion stations. Epicenter of the Kaikōura earthquake is shown as a yellow star. Note that the vertical value of over 3g recorded at station WTMC (transparent blue bar) has unusual characteristics, which warrant further investigation. The approximate extent of mapped landslides is shown as pink shaded area, with the majority occurring in the darker shaded region (Kaiser al., 2017)

Figure 2 Backprojection of energy release during the Kaikoura earthquake (Bill Fry in Kaiser et al., 2017)

Backprojection of energy release during the Kaikōura earthquake (Bill Fry in Kaiser et al., 2017)

 
Figure 3: Simulations of ground motions and tsunami wave propagation resulting from the 2016 M7.8 Kaikōura (NZ) earthquake (Kaneko et al., 2017)

Simulations of ground motions and tsunami wave propagation resulting from the 2016 M7.8 Kaikōura (NZ) earthquake (Kaneko et al., 2017)

Figure 4 Ground motion triggering on slow slips at large distances (Wallace et al., 2017)

Ground motion triggering on slow slips at large distances (Wallace et al., 2017)

Figure 5 Energy partitioning during the M7.8 Kaikoura earthquake inferred from estimated fault-weakening parameters (Kaneko et al., 2017)

Energy partitioning during the M7.8 Kaikōura earthquake inferred from estimated fault-weakening parameters (Kaneko et al., 2017)

Figure 6: multiple rupture on the Kekerengu Fault (Holden et al., 2017)

Multiple rupture on the Kekerengu Fault (Holden et al., 2017)