An earthquake swarm happens when a number of seismic occasions of comparable depth strike a small space in comparatively fast succession.
A state of emergency has been declared on Greece’s Santorini and the close by islands of Ios, Amorgos, and Anafi after a swarm of undersea earthquakes this month, typically each jiffy, prompted 1000’s of individuals to maneuver to the mainland.
Greece’s chief seismologist has stated the frequency of earthquakes affecting the realm has eased in current days, however that the outlook for continued tremors within the coming weeks stays unsure.
“Unfortunately, for now, we must wait,” seismologist Costas Papazachos instructed state-run ERT radio on February 17.
Papazachos, a professor of geophysics on the University of Thessaloniki, is at the moment because the consultant of two emergency committees that embrace scientists and officers from authorities, the navy, and emergency companies. He stated Santorini, a volcanic island formed by catastrophic eruptions, didn’t face hazard from its dormant volcano however famous that magma was affecting the tremors.
“The root cause of the activity is the interaction of tectonic and magmatic processes,” he stated. “That does not mean that the molten material will manage to break through 8 km of crust and cause a new volcanic eruption.”
Swarms have been reported in peninsular India. After heavy rain, water seeps into small fractures in underground rocks. A 2008 examine estimated that for each 10 metre’s rise within the water desk, the stress contained in the rocks elevated by virtually 1 atm, and which is launched in earthquake swarms.
With inputs from businesses
Published – February 18, 2025 10:11 am IST
