Earthquakes in Granada and beyond: more noise than tremors

Five major quakes between June and August, but the average number of earthquakes remains unchanged. Granada empties out due to seismic fear.

English · Original discussion in Spanish · Published

Earthquakes haven't increased, they've just changed location

The numbers say it: there are no more earthquakes than in other years. What has changed is where they occur and how easily we find out about them. This year, quakes have hit populated areas, with five major events between June and August, and that has triggered the alarm. But the global average remains within known parameters.

  1. One earthquake of magnitude 8 or higher is expected per year: so far, zero.
  2. Fifteen earthquakes of magnitude 7 or higher are expected: we've had twelve.

The difference, therefore, is not in the number but in the exposure. The fact that Granada records tremors almost daily turns a geological problem into a social and economic issue. People leave the city for a few days, homes are left empty, and antiestéticar becomes a cost that seismic data does not capture.

Granada and the psychosis of the earthquake swarm

Some analyses recall that earthquakes are like bees: they come in swarms. And swarms do not necessarily imply a larger event. The key is that the Earth moves every day all over the planet. Nobody complains about earthquakes in Alaska; but shaking beneath Andalusian homes is another matter.

The VolcanoDiscovery platform allows real-time monitoring of seismicity. The result: hundreds of daily movements in the crust, almost all irrelevant. The perception that "there didn't used to be earthquakes" is better explained by attention than by tectonic activity. But with the focus on populated areas, the feeling of an increase has traction.

Prediction is not on the agenda

The earth is not going to split in half, but the noise will. As long as seismicity remains concentrated where there are people and screens, the next "there are no earthquakes" will take time to arrive. What is predictable is that the discussion will move between the skepticism of averages and the panic of experience. And that no one will fully square the equation.

Summary of a discussion on Burbuja.info - Foro de economía, actualidad y política., translated from Spanish and reviewed before publication. Read the full discussion (11 replies).

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