E já não estou tão descansada outra vez.
Segui o link que me deu e lá alguém comentou isto:
"Any idea what event registered at tsunami monitoring buoys 44402, 41425, and 41421 just over an hour and a half ago, because those three events sure looked like a tsunami to me"
E essa pessoa deu este link: https://www.ndbc.noaa.gov/
Event or Tsunami Mode: The Bottom Pressure Recorder (BPR) has a Tsunami Detection Algorithm on board that places the tsunameter in Event Mode. Event Mode provides data more frequently - an initial 4 minutes of 15-second with one-minute averaged data for the hour before and the three hours after going into Event Mode. Not every Event is a tsunami. In some cases, it can go into Event Mode because of electronic problems, or during the recovery of a BPR. The tsunami warning centers can initiate an Event to have the tsunameter report more frequently in anticipation of tsunami. Events are usually initiated by the seismic signal from an earthquake, and the actual tsunami, if there is on, will pass the tsunameter later. It requires expert analysis to determine a tsunami from the tsunameter data.
* Earthquakes of this size are known to generate tsunamis dangerous to shorelines near the source.