What instrumentation permits the "Tsunami Warning System" to assess the possibility of a tsunami and decide when to raise the coastal alert?
A) GPS satellites that monitor the sea surface height to +/- 5 cm accuracy
B) tilt meters on the island of Oahu near Ewa Beach
C) a trip wire attached to a rubber ducky in the middle of the Pacific
D) networked seismographs and tide gauges around the Pacific Basin all telemetred to the centre in Hawaii

Question

Quizplus · Accepted Answer

The Tsunami Warning System uses networked seismographs to detect undersea earthquakes and tide gauges to monitor sea level changes, providing data to assess tsunami threats.

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