The fifth Workshop: 2015 New Zealand-Japan-Taiwan Seismic Hazard Assessment


Major participants on the third day of the joint meeting in Wellington, New Zealand

The fifth workshop was held in conjunction with the 2nd New Zealand-Japan-Taiwan workshop co-hosted by GNS, NIED and TEM at Te Papa Tongarewa, Wellington, New Zealand on November 2-7, 2015. The meeting included two and a half day’s workshop, followed by three and a half day’s field trip to investigate the relationships between historical earthquakes and the Wairau Fault, Alpine Fault, and Hope Fault on the South Island.

The workshop was built on the outcomes of the 4th NIED-TEM meeting at NIED in August 2015. Approximately 55 professionals, 15 from Japan, 10 from Taiwan, and 30 from New Zealand, participated in the 2015 workshop. Additionally, GEM sent a representative to the joint meeting for the first time. The workshop focused on applied seismic hazard research in each country, with a specific emphasis on the National Seismic Hazard Model (NSHM) developed by each of the teams.

Seven research themes were chosen, and within each, all three countries presented recent work and problems they have been encountering, followed by directed discussion. The themes were: 1) Overview of the NSHM; 2) Data, Modelling and Uncertainty: Faults and Fault Data, Background and Earthquake Catalogue Models, Geodetic Modelling; 3) Site Amplification; 4) Ground Motion Prediction and Scenarios; 5) Model Validation; 6) Time-dependent Models; and 7) Hazard and Risk Products.

The research priority discussions for long-term and short-term were facilitated by two breakout sessions with six groups. Here the long-term Top Priorities were listed as:

  1. Use of earthquake simulators to inform hazard
  2. Improve and validate deterministic and non-deterministic ground-motion modelling
  3. Role of Megathrust deformation on proximal faults
  4. Increased regionalization of long-period ground response
  5. Increased interaction with end-user communities

The strategic targets are not only for Japan, Taiwan and New Zealand, but also possibly useful for other member states of GEM and seismic countries. Therefore, NIED-TEM-GNS will continue working together with the GEM secretariat.

For details, please see 2015 The Second Joint Meeting on Seismic Hazard Assessment between Taiwan, Japan and New Zealand.