Earthquake of 6.4 magnitude shifted the ground by 15 inches, scientists around the world are surprised
Earthquake: Research has revealed movement up to 40 centimeters horizontally and up to 20 centimeters in depth. These findings suggest that tectonic changes in this region occur mainly through individual earthquakes rather than gradual motion, providing important information for regional earthquake safety.
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The 6.4 magnitude earthquake near the Croatian city of Petrinja caused a ground displacement of about 15 inches of land. This has come to light in the analysis of researchers from Croatia and Hungary. Earlier also, ground displacement caused by the Petrinja earthquake was detected. This time, the mapping has been done using geodetic data. Among these, INSAR, trigonometric, and GNSS networks are prominent. The results of this earthquake that happened four years ago showed that the intensity of horizontal displacement from the epicenter of the earthquake was 40 centimeters at some places while in the vertical direction, it was a maximum of 20 centimeters.
The scientists also separately studied data from the earthquake that struck the capital Zagreb in 1880. Its GPS study found the speed of plate tectonics to be 2.4 millimeters per year. Scientists say that the Petrinja and Zagreb region is more frequent due to the constant friction of the plates.
This shows that the displacement caused by global tectonics and plate movements in the Petrinja-Zagreb region is felt mostly by individual events, and earthquakes, rather than continuous movement. This is important information not only for Croatia when assessing earthquake safety, but also for neighboring regions.
