Tsunami Risk Scenarios for the Tonga-Kermadec Subduction Zone

A 2018 UNESCO/IOC workshop report synthesizing expert-identified seismic scenarios for the Tonga-Kermadec trench. Fourteen experts from four countries ranked potential worst-case tsunami sources by probability. The report also discusses gaps in scientific knowledge, regional instrumentation, and tsunami readiness for at-risk populations.

Use Cases

• Prioritizing tsunami hazard scenarios based on expert-ranked seismic probabilities described in the report.
• Assessing gaps in seismic and tsunami monitoring instrumentation for the Tonga-Kermadec trench as discussed.
• Informing regional tsunami preparedness and warning system development based on the identified risk levels.
• Studying tectonic uncertainty in subduction zones based on the workshop's findings on non-seismic sources.

Strengths

• Based on a 2018 workshop convened by UNESCO's Intergovernmental Oceanographic Commission.
• Synthesizes input from fourteen experts across four countries and multiple disciplines.
• Identifies and ranks specific seismic scenarios for a major subduction zone.

Limitations

• Data format is HTML, likely a report document rather than structured data.
• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

Geoscience Australia Data

Collection Method

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

Time Range

2018

Freshness

Last updated 2026-04-30 13:08:19.037537; freshness should be verified.

Geography

Tonga-Kermadec Subduction Zone, Southwest Pacific Ocean