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Did You Feel It? FAQs - 12 Found

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How do you filter erroneous responses?

Occasionally we receive bad responses from people who think it might be amusing to throw off the map with an unnaturally high response. We reserve the right to manually exclude such responses from the final product, but we also have several build-in filters. For example, the responded intensity must make sense for the distance and magnitude. It would not make sense for a magnitude 3.9 earthquake to produce Intensity VIII shaking, even at the epicenter. However, our best filter is to have multiple responses per zip code to give a reliable average of the shaking over the area. The wisdom of the crowd usually outweighs individual eccentricities, but not always.

Tags: Seismology, Liquefaction, Tsunamis, Earthquakes, Faults, Tectonics, Magnitude, Prediction