What instrumentation permits the "Tsunami Warning System" to assess the possibility of a tsunami and decide when to raise the coastal alert?

Question

Quizplus · Accepted Answer

The "Tsunami Warning System" relies on a combination of networked seismographs, tide gauges, and sea buoys to assess the possibility of a tsunami and decide when to raise the coastal alert. These instruments are telemetred to the Pacific Tsunami Warning Center (PTWC) in Hawaii, which analyzes the data and issues alerts as necessary. Tilt meters on the island of Oahu and GPS satellites that monitor sea surface height may also be used in the assessment process, but they are not instrumental in deciding when to raise the coastal alert. A trip wire attached to a rubber ducky in the middle of the Pacific is not a valid choice as it does not provide any meaningful data for tsunami forecasting.

What Instrumentation Permits the "Tsunami Warning System" to Assess the Possibility