California researchers find way to pinpoint major earthquake hotspots

Key Points:

• Researchers at the University of California, Riverside have developed a method to identify locations along major fault lines where the most significant earthquakes are likely to occur by measuring accumulated strain using GPS data.
• This technique focuses on subduction zones, where one tectonic plate slides beneath another, which are known to produce the world’s largest earthquakes, such as the magnitude 8.5+ quake in Russia’s Kamchatka Peninsula in 2025.
• Although the method cannot predict the timing or exact impacts of earthquakes like tsunamis, it helps pinpoint areas of stress buildup, aiding long-term preparedness efforts for communities in earthquake-prone regions.
• The approach was validated by successfully identifying the location of the 2025 Kamchatka earthquake and distinguishing it from a more massive 1952 event based on tsunami size and fault rupture characteristics.
• Researchers are now applying similar techniques to California faults, including the Hayward Fault, to better understand which sections are most likely to generate future earthquakes, emphasizing the importance of preparedness over precise forecasting.