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  2. What causes earthquakes? The science behind why seismic ... - AOL

    www.aol.com/causes-earthquakes-science-behind...

    Moderately damaging earthquakes strike between New York and Wilmington, Delaware, about twice a century, the USGS said, and smaller earthquakes are felt in the region roughly every two to three years.

  3. European Alert System - Wikipedia

    en.wikipedia.org/wiki/European_Alert_System

    It disseminates a notification to the Council of Europe less than an hour after an earthquake occurrence with a magnitude larger than 6.0 on the Richter scale in any of the states of the Partial Agreement, indicating the localization of the epicentre of the seism and its magnitude. The EUR-OPA secretariat undertakes to confirm the data with the ...

  4. Earthquake - Wikipedia

    en.wikipedia.org/wiki/Earthquake

    In its most general sense, the word earthquake is used to describe any seismic event that generates seismic waves. Earthquakes can occur naturally or be induced by human activities, such as mining, fracking, and nuclear tests. The initial point of rupture is called the hypocenter or focus, while the ground level directly above it is the epicenter.

  5. Seismic hazard - Wikipedia

    en.wikipedia.org/wiki/Seismic_hazard

    Surface motion map for a hypothetical earthquake on the northern portion of the Hayward Fault Zone and its presumed northern extension, the Rodgers Creek Fault Zone. A seismic hazard is the probability that an earthquake will occur in a given geographic area, within a given window of time, and with ground motion intensity exceeding a given threshold.

  6. Why the earthquake in Turkey, Syria was so devastating - AOL

    www.aol.com/why-earthquake-turkey-syria...

    Registering as a 7.8 magnitude earthquake, the Gaziantep event is classified as a “major” earthquake and resulted in significant damage to the region. It broke out near a fault line, which is ...

  7. Why are earthquakes so hard to predict? - AOL

    www.aol.com/news/why-earthquakes-hard-predict...

    Despite advances in both science and technology, it remains virtually impossible to know precisely when and where earthquakes will occur. Skip to main content. 24/7 Help. For premium support ...

  8. European macroseismic scale - Wikipedia

    en.wikipedia.org/wiki/European_macroseismic_scale

    The earthquake is felt indoors by many people, outdoors by few. A few people are awakened. The level of vibration is possibly frightening. Windows, doors and dishes rattle. Hanging objects swing. No damage to buildings. V. Strong The earthquake is felt indoors by most, outdoors by many. Many sleeping people awake. A few run outdoors.

  9. Why was the Turkey-Syria earthquake so bad? - AOL

    www.aol.com/news/explainer-why-turkey-syria...

    The magnitude 7.8 earthquake that struck Turkey and Syria on Monday is likely to be one of the deadliest this decade, seismologists said, with a more than 100 km (62 miles) rupture between the ...