Tsunami Risk Assessment for the Tonga-Kermadec Subduction Zone from Expert Workshop

A 2018 UNESCO/IOC workshop report synthesizes expert-identified worst-case seismic tsunami scenarios for the Tonga-Kermadec trench. Fourteen experts from four countries ranked scenarios by probability and discussed gaps in instrumentation and community readiness. The report, hosted by the Australian Ocean Data Network, presents these findings and recommendations.

Use Cases

• Model tsunami inundation scenarios based on the identified worst-case seismic sources.
• Assess regional risk and preparedness gaps based on the discussed instrumentation and warning system limitations.
• Prioritize seismic monitoring deployments based on the expert-ranked probability events.
• Study tectonic uncertainty in subduction zones based on the acknowledged knowledge gaps.

Strengths

• Findings are based on a 2018 workshop of fourteen international experts.
• Scenarios are categorized by expert-assigned low, medium, and high probability rankings.
• Report includes specific recommendations for the region.

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download.
• Column-level documentation is absent; field semantics must be inferred after download.
• The report focuses on seismic sources; non-seismic tsunami sources are acknowledged but not detailed.

Provenance

Source

Workshop sponsored by UNESCO's Intergovernmental Oceanographic Commission, organized by the Pacific Tsunami Warning System.

Collection Method

Expert workshop synthesis.

Time Range

Workshop held in November 2018.

Freshness

Last updated 2026-04-10 22:11:34.056521; freshness should be verified.

Geography

Tonga-Kermadec Subduction Zone, Southwest Pacific.