File:Earthquakes of the First 15 Years of the 21st Century.webm
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DescriptionEarthquakes of the First 15 Years of the 21st Century.webm |
English: This animation shows every recorded earthquake in sequence as they occurred from January 1, 2001, through December 31, 2015, at a rate of 30 days per second. The earthquake hypocenters first appear as flashes then remain as colored circles before shrinking with time so as not to obscure subsequent earthquakes. The size of the circle represents the earthquake magnitude while the color represents its depth within the earth. At the end of the animation it will first show all quakes in this 15-year period. Next, it will show only those earthquakes greater than magnitude 6.5, the smallest earthquake size known to make a tsunami. Finally it will only show those earthquakes with magnitudes of magnitude 8.0 or larger, the “great” earthquakes most likely to pose a tsunami threat when they occur under the ocean or near a coastline and when they are shallow within the earth (less than 100 km or 60 mi. deep).
This time period includes some remarkable events. Several large earthquakes caused devastating tsunamis, including 9.1 magnitude in Sumatra (26 December 2004), 8.1 magnitude in Samoa (29 September 2009), 8.8 magnitude in Chile (27 February 2010), and 9.0 magnitude off of Japan (11 March 2011). Like most earthquakes these events occurred at plate boundaries, and truly large events like these tend to occur at subduction zones where tectonic plates collide. Other, much smaller earthquakes also occur away from plate boundaries such as those related to volcanic activity in Hawaii or those related to wastewater injection wells in Oklahoma. NOAA Science on a Sphere version: http://sos.noaa.gov/Datasets/dataset.php?id=643 Earthquake source used: NEIC Earthquake Catalog https://earthquake.usgs.gov/earthquakes/search/ |
Date | |
Source | YouTube: Earthquakes of the First 15 Years of the 21st Century – View/save archived versions on archive.org and archive.today |
Author | PacificTWC |
Licensing edit
Public domainPublic domainfalsefalse |
This image is in the public domain in the United States because it only contains materials that originally came from the United States Geological Survey, an agency of the United States Department of the Interior. For more information, see the official USGS copyright policy.
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This file, which was originally posted to YouTube: Earthquakes of the First 15 Years of the 21st Century, was reviewed on 1 February 2020 by the automatic software YouTubeReviewBot, which confirmed that this video was available there under the stated Creative Commons license on that date. This file should not be deleted if the license has changed in the meantime. The Creative Commons license is irrevocable.
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current | 22:36, 17 April 2019 | 3 min 50 s, 3,840 × 2,160 (713.81 MB) | Victorgrigas (talk | contribs) | Imported media from https://www.youtube.com/watch?v=ph7Eczs-nTI |
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