Ce a provocat cutremurele semnificative din zona Gorjului. Studiu: Cutremurele au reactivat falii vechi într-o zonă care nu era clasificată ca seismogenă. Peste 4.400 de replici

A recent study reveals that the 2023 earthquake sequence in Târgu Jiu was caused by the reactivation of old tectonic structures, despite the region's previously low seismic activity. The main earthquakes, occurring at a depth of about 20 kilometers, were followed by over 4,400 aftershocks, marking a significant increase in seismic activity. Researchers found that the earthquakes exhibited characteristics similar to larger seismic events, indicating the need for detailed assessments of seismic sources in historically low-seismic areas. The study also suggests that fluids in the crust may have played a role in weakening faults, although this remains a hypothesis requiring further investigation. The findings highlight the complexity of moderate earthquakes and the potential for reactivation of ancient faults in such regions.