Tsunami Hazard Assessment Report for the Tonga-Kermadec Subduction Zone

A 2018 expert workshop report synthesizes findings on tsunami sources, hazards, and risk for the Tonga-Kermadec Subduction Zone. Fourteen experts from four countries identified and ranked potential worst-case seismic scenarios and discussed gaps in scientific knowledge and instrumentation. The report, hosted by Geoscience Australia, presents these seismic sources and recommendations for tsunami readiness.

Use Cases

• Prioritizing tsunami risk scenarios based on expert-ranked seismic events described in the report.
• Assessing gaps in seismic and tsunami instrumentation for the Tonga-Kermadec trench as discussed by workshop participants.
• Informing disaster preparedness and warning systems based on the evaluation of at-risk population readiness.
• Studying tectonic understanding and uncertainty for the region as synthesized from the expert meeting.

Strengths

• Content is based on a 2018 workshop convened by UNESCO's Intergovernmental Oceanographic Commission and the Pacific Tsunami Warning System.
• Findings incorporate input from fourteen experts across four countries and observers from Pacific Island nations.
• Report identifies and ranks specific seismic scenarios (low, medium, high probability) for the Tonga-Kermadec trench.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.
• Data may reflect geographic and expert consensus bias inherent to the workshop's scope and participants.

Provenance

Source

Geoscience Australia Data

Collection Method

Synthesis of findings from a 2018 expert workshop sponsored by UNESCO's Intergovernmental Oceanographic Commission.

Time Range

Workshop held in November 2018; report content reflects knowledge state at that time.

Freshness

Last updated 2026-03-25 16:28:26.692408; freshness should be verified.

Geography

Tonga-Kermadec Subduction Zone, with focus on nearby coastlines and Pacific Island countries.