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M4.7 Quake Exposes Vulnerability at NaplesPhlegraean Fields

Scientists report steady ground uplift of about 1 cm per month with rising gas emissions, a sign the seismic crisis could produce a stronger quake or even an eruption.

Overview

  • A magnitude 4.7 earthquake struck the Phlegraean Fields, causing widespread local damage that left hundreds displaced and dozens injured.
  • Monitoring agencies say the ground is rising roughly 1 cm per month and gas emissions have increased, and the national volcanology institute warns a stronger shock up to about magnitude 5.1 is possible.
  • Inspectors carried out more than 10,000 visits with about 300 specialists and identified roughly 700 houses at high risk of collapse in the area.
  • Despite a 2023 law offering a 50% reimbursement for seismic retrofits, officials report virtually no applications and many planned stabilization projects and studies remain unstarted.
  • Transport tunnels, key roads and public services are closed or impaired, protests and reports of looting have occurred, and experts warn that the combination of bradyseismic uplift and fragile buildings raises the risk of much greater harm if stronger quakes follow.