What does this research mean for the field?

Regional W-phase inversions can reliably estimate earthquake magnitude and location within 18 minutes, improving tsunami early warning capabilities in New Zealand and the Southwest Pacific. Novelty: ClaimNovelty.METHODOLOGICAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

The aim is to accelerate the retrieval of stable earthquake source information for tsunami early warning using regional W-phase inversions.

February 26, 2026Natural HazardsOpen Access

Regional W-phase solutions for past large-magnitude events in the Southwest Pacific

View Full Paper

Ask AI

Bookmark

Authors

LLLuce LacouaUniversity of Otago BFBill FryGNS Science AJAnthony JamelotInstitut Louis Malardé

Discussion

Member takes

Implication

Demonstrates regional W-phase inversions improve tsunami forecasts in New Zealand, suggesting faster tsunami readiness.

Key Points

The aim is to accelerate the retrieval of stable earthquake source information for tsunami early warning using regional W-phase inversions.
Conducted W-phase moment tensor analysis for earthquake characterisation
Evaluated time efficiency of obtaining stable solutions within 18 minutes
Assessed the influence of epicentral distance on solution accuracy
Utilized regional Green's functions in the W-phase inversion process
Achieved reliable W-phase solutions for past earthquakes with Mw ≥ 6.9 in 18 minutes
Confirmed robust magnitude estimation can occur within 10 minutes post-earthquake
Showed improvements in inversion misfit with increased epicentral distances but limited operational usefulness
Highlighted the benefits of incorporating spatially clustered stations in analysis

Cite This Study

Lacoua et al. (2026) studied this question.

synapsesocial.com/papers/699fe31195ddcd3a253e69d3 https://doi.org/10.1007/s11069-025-07762-7

View Full Paper

Ask AI

Bookmark

Regional W-phase solutions for past large-magnitude events in the Southwest Pacific

Discussion

Member takes

Implication

Key Points

Cite This Study

Regional W-phase solutions for past large-magnitude events in the Southwest Pacific

Discussion

Member takes

Implication

Key Points

Cite This Study

Also Consider

Also Consider