Expert Workshop Report on Tonga-Kermadec Trench Tsunami Scenarios

November 2018 expert workshop findings synthesize potential worst-case seismic tsunami sources for the Tonga-Kermadec Subduction Zone. The report, produced by a UNESCO/IOC-sponsored group of fourteen international experts, ranks scenarios by probability and discusses gaps in knowledge and instrumentation. The document was published by the Australian Ocean Data Network.

Use Cases

• Ranking identified seismic sources by low, medium, and high probability for risk assessment.
• Analyzing expert discussions on gaps in seismic and tsunami instrumentation for the trench region.
• Reviewing synthesized findings on tsunami readiness and warning systems for at-risk populations.

Strengths

• Synthesizes findings from a 2018 workshop of fourteen international experts.
• Focuses on a specific, high-risk tectonic region: the Tonga-Kermadec Subduction Zone.

Limitations

• Data scope is limited to expert-identified seismic scenarios, excluding non-seismic tsunami sources.
• The core content is a qualitative report in HTML format, lacking quantitative datasets or model outputs.

Provenance

Source

Australian Ocean Data Network, based on a UNESCO/IOC Intergovernmental Oceanographic Commission workshop.

Collection Method

Expert workshop synthesis and qualitative analysis.

Time Range

Workshop held in November 2018.

Freshness

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Geography

Tonga-Kermadec Subduction Zone and nearby coastlines, including New Zealand, Australia, USA, French Polynesia, Tonga, and Fiji.