What specific catastrophic event in 1946 prompted the formalization of tsunami hazard mitigation in the Pacific basin?

Answer

The 1946 Aleutian Islands earthquake

The 1946 Aleutian Islands earthquake produced a massive tsunami that caused significant loss of life in distant locations, including Hilo, Hawaii. This tragic event served as a stark reminder of the potential for far-reaching seismic danger, which exposed the lack of an organized warning framework and triggered the immediate need for a systematic, institutionalized method of communicating geophysical threats to populations across the Pacific.

What specific catastrophic event in 1946 prompted the formalization of tsunami hazard mitigation in the Pacific basin?
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