Look to the Stars: Satellites and the Future for Emergency
A siren does not work if an earthquake, for example, has destroyed it. Similarly, messages cannot be broadcast by cell tower if those cell towers have been destroyed too.
Analyzing and summarizing these observed seismic damages can enhance our understanding of the impairment of communication base stations during earthquakes, providing valuable information for establishing a Bayesian network model for functionality loss.
A method to evaluate the post-earthquake functionality of communication base stations using Bayesian network is developed. The dependence between the equipment and its hosting building structure, and the impact of power outages are considered. The method is validated using seismic damage data from the Ludian Earthquake.
However, as in the case of the Noto Peninsula Earthquake, communication can be disrupted if base stations and other facilities are damaged during a disaster. Even in the event of an earthquake directly beneath the Tokyo metropolitan area, communications will most likely be interrupted by large-scale fires.
Ke et al. proposed a method for assessing damage to mobile communication facilities during large earthquakes. The study analyzed the impact of power outages and evaluated the damage caused by ground motion to base stations using fragility curves .
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