ZGODNJE OPOZARJANJE OB POTRESU

Andrej Gosar

Authors

Andrej Gosar Ministrstvo za okolje in prostor, Agencija RS za okolje, Urad za seizmologijo, Ljubljana

Abstract

Earthquake early warning systems are based on information on the occurrence of a strong earthquake, detected by seismic stations close to the epicentre, being used to alert citizens further away from the epicentre before damaging seismic waves reach their location. Each system is composed of a dense network of seismic stations, fast data transmission, fast automatic determination of the earthquake’s parameters, attenuation models of the decrease of shaking intensity with distance, and the effective distribution of alerts, since only a few seconds to a few tens of seconds are available for action. Due to the rapid development of communication channels for data transmission and alerts, earthquake early warning systems have been in development in most countries at high risk of earthquakes. We tested the PRESTo early warning system in the wider Slovenia region, in cooperation with neighbouring countries. Tsunami warning systems are based on similar principles, but the time available for the action is longer, since several hours may pass between the occurrence of the earthquake and the strike of damaging ocean waves.

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