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Earthquake timelime in years4/6/2023 People search for family members trapped inside collapsed houses the day after the earthquake struck in. Significance = max(mag_significance, pager_significance) + dyfi_significance Īny event with a significance > 600 is considered a significant event and appears on the list. Below is a list of some of the world’s strongest earthquakes in the past 30 years. With a magnitude of 5.9 and an epicenter beneath the New York-Canada border, this earthquake did major damage in the towns of Massena, NY and Cornwall, Ontario. Mag_significance = magnitude * 100 * (magnitude / 6.5) pager_significance = red is 2000 : orange is 1000 : yellow is 500 : green is 0 dyfi_significance = min(num_responses, 1000) * max_cdi / 10 The chart shows all 40 major earthquakes in the Cascadia Subduction Zone that geologists estimate have occurred since 9845 B.C. of 541 events/year (horizontal dashed grey) over the last 12 years. ![]() It is also during this time period that the region experienced it’s greatest. Download scientific diagram Earthquake activity during 2014: a timeline. The period from 1911 to 1979 experienced no earthquakes over magnitude 6.0. Events in this list and shown in red on our real-time earthquake map and list are considered “significant events’, and they are determined by a combination of magnitude, number of Did You Feel It responses, and PAGER alert level. It is important to note that there has been a 68 year quiet period in the San Francisco Bay Region.
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