The researchers explained that a GPS-based global earthquake monitoring system could provide
In a new study published inBulletin of Seismological Society, a team of researchers detailed a new process for developing a global earthquake warning system that measures the displacement of Global Positioning System (GPS) satellite receiver stations when an earthquake deforms the Earth's crust. The system assesses the strength of an earthquake within seconds and issues warnings in less than two minutes from the first detection of ground movement.
According to study lead author TimothyMelbourne, professor of geology at Central Washington University, a GPS-based detection system can provide earlier and more accurate alerts than traditional seismic sensors installed in tectonically active regions. They may fail due to a burst of data when seismic waves first appear.
Study: Tsunami threatens Australia due to reef destruction
“The problem is that when earthquakesbecome very strong, it is very difficult for seismic networks to understand what happened in the first minutes after the event, the researchers noted. “Even with a moderate earthquake, there is a very complex seismic trace. Seismic waves are radiated into the earth, they are reflected inside the earth and interact with structures. It is very difficult to determine what was the source of the waves and what was the result of reverberations in the earth's crust. "
Seismologists usually wait for the wavesspread further from the center, and evaluate the earthquake from afar. But in some cases, in the face of the threat of highly magnetic earthquakes and potentially devastating tsunamis that can kill thousands of people, this is not possible.
For example, in 2019, the American application forearthquake warning ShakeAlert failed to warn Los Angeles residents about the magnitude 6.4 earthquake that struck Southern California on Independence Day because it misjudged the magnitude of the shaking. However, false alerts can cause panic and reduce trust in traditional systems in the future.
See also:
Scientists have found that super-enriched gold is formed as yogurt
Tiny hydrogen engine replaces fossil fuel counterparts
High growth, missing teeth, new bones: what happened to the human body in a hundred years