Seu celular Android prevê terremotos!

Google transformou celulares Android em sensores de terremotos com o sistema Android Earthquake Alerts (AEA).

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O AEA usa acelerômetros de 2 bilhões de celulares para detectar tremores com eficácia comparável a sismômetros.

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Entre 2021 e 2024, o sistema detectou mais de 11 mil terremotos e enviou alertas em 98 países.

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Ele capta ondas P, que antecedem tremores fortes, e alerta usuários segundos antes do impacto.

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Sistema amplia acesso global a alertas sísmicos, inclusive onde não há estrutura tradicional.

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Uma limitação é que sensores dos celulares não são tão precisos, mas o grande volume de dados compensa.

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Até março de 2024, 85% dos usuários que sentiram tremores receberam alertas. Poucos foram falsos.

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O Google diz que o AEA deve complementar, e não substituir, os sistemas oficiais.

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