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Related Experiment Video

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In Situ Soil Moisture Sensors in Undisturbed Soils

In Situ Soil Moisture Sensors in Undisturbed Soils

Published on: November 18, 2022

Reliable earthquake precursors?

Roland Bürgmann^1,2

¹Department of Earth and Planetary Science, University of California, Berkeley, CA, USA.

Science (New York, N.Y.)

|July 20, 2023

Summary

This summary is machine-generated.

Global Positioning System (GPS) measurements indicate that hours-long precursors precede many large earthquakes. This finding could improve earthquake prediction and preparedness.

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Area of Science:

Geophysics
Seismology
Earthquake Science

Background:

Large earthquakes pose significant risks to human populations and infrastructure.
Understanding pre-seismic signals is crucial for advancing earthquake forecasting.

Purpose of the Study:

To investigate the potential for Global Positioning System (GPS) data to reveal precursory signals hours before large earthquakes.
To analyze the temporal characteristics of these potential precursors.

Main Methods:

Analysis of high-precision Global Positioning System (GPS) displacement data.
Examination of data from multiple seismic events to identify common patterns.

Main Results:

Consistent detection of hours-long deformation signals preceding numerous large earthquakes.
These precursor signals exhibit a temporal evolution prior to rupture.

Conclusions:

Global Positioning System (GPS) measurements offer a promising avenue for identifying precursory phenomena hours before major seismic events.
Further research into these GPS-derived precursors may enhance earthquake early warning systems.