The quest for wisdom: lessons from 17 tsunamis, 2004-2014

Area of Science:

• Geophysics
• Seismology
• Natural Hazard Mitigation

Background:

• Since the 2004 Sumatra-Andaman tsunami, numerous damaging tsunamis have occurred.
• Scientific understanding and decision-making regarding tsunamis have evolved significantly.

Purpose of the Study:

• To review advancements in tsunami science and mitigation strategies.
• To assess the effectiveness of warning systems and population response.

Main Methods:

• Analysis of tsunami events since 2004.
• Development of new algorithms for real-time earthquake characterization (e.g., seismic P waves).
• Introduction of a 'wisdom index' evaluating warning issuance and population response.

Main Results:

• Significant progress in far-field tsunami warning, with reduced casualties.
• Self-evacuation by informed populations is crucial for near-field mitigation.
• Persistent communication gaps exist between scientists and decision-makers.
• Tsunami earthquakes remain a challenge for real-time assessment.

Conclusions:

• While far-field warning has improved, near-field mitigation relies heavily on public education and self-evacuation.
• Enhanced real-time seismic data processing aids tsunami characterization.
• Bridging the gap between scientific findings and policy implementation is essential for future tsunami preparedness.