Italy quake was new shock, typical of region: experts

A building in the village of Visso, central Italy, is damaged following twin earthquakes on October 26, 2016
A building in the village of Visso, central Italy, is damaged following twin earthquakes on October 26, 2016

The powerful tremors which shook central Italy on Wednesday were the product of a new earthquake rather than aftershocks from one that devastated the town of Amatrice in August, Italian experts say.

"It wasn't an aftershock, it was a new earthquake," Mario Tozzi of the national institute for environmental geology and geo-engineering (IGAG) told AFP.

"What we do not know is whether it was a dormant section of the Amatrice fault or a parallel structure, a close cousin of this fault," he added.

Tozzi said Wednesday's 'double-hit' quake, in which an initial tremor of 5.5 magnitude was followed by one of 6.1, was typical of the central Appenine mountains.

He recalled the 1997 Assisi in which four workers were killed when a second shock struck while they inspecting buildings damaged the previous day.

"In the coming months we can expect a series of after shocks but they should get progressively weaker," Tozzi said, while stressing it was impossible to rule out another major quake in the short term.

Much of Italy's land mass and some of its surrounding waters are prone to with the highest risk concentrated along its mountainous central spine.

Nearly 300 died in the Amatrice disaster in August and just over 300 perished when a quake struck near the city of L'Aquila in 2009.

Italy earthquakes
Italy earthquakes

In 1980 tremors near Naples left 3,000 dead and an estimated 95,000 died in the 1908 Messina disaster, when a quake in the waters between mainland Italy and Sicily sent massive waves crashing into both coasts.

Italy straddles the Eurasian and African tectonic plates, making it vulnerable to seismic activity when they move.

The movement of the plates is slowly pushing the country northwards at a rate which, experts predict, could result in it becoming attached to what is now Croatia in around 20 million years time.


Explore further

Italy quake struck notorious seismic hotspot

© 2016 AFP

Citation: Italy quake was new shock, typical of region: experts (2016, October 27) retrieved 15 August 2020 from https://phys.org/news/2016-10-italy-quake-typical-region-experts.html
This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.
8 shares

Feedback to editors

User comments