Whose idea was the Richter-triggered tsunami warning system for the Pacific?

Modern tsunami warning systems developed after scientists realized that major undersea earthquakes could generate waves crossing entire oceans. The 1946 Aleutian Islands tsunami killed people as far away as Hawaii and prompted serious international warning efforts. Seismologists, including Charles F. Richter and colleagues, helped refine earthquake measurement so dangerous events could be identified quickly. By 1949, the Pacific Tsunami Warning Center's predecessor had been established in Hawaii. Today, tsunami warnings combine seismic data, sea-level sensors, and ocean models to reduce risk.