Editing Earthquake (section)

====Swarms====
{{Main|Earthquake swarm}}
Earthquake swarms are sequences of earthquakes striking in a specific area within a short period. They are different from earthquakes followed by a series of [[aftershock]]s by the fact that no single earthquake in the sequence is the main shock, so none has a notably higher magnitude than another. An example of an earthquake swarm is the 2004 activity at [[Yellowstone National Park]].<ref>{{cite web|url=http://volcanoes.usgs.gov/yvo/2004/Apr04Swarm.html|title=Earthquake Swarms at Yellowstone|publisher=United States Geological Survey|access-date=2008-09-15|archive-date=2008-05-13|archive-url=https://web.archive.org/web/20080513060550/http://volcanoes.usgs.gov/yvo/2004/Apr04Swarm.html|url-status=live}}</ref> In August 2012, a swarm of earthquakes shook [[Southern California]]'s [[Imperial Valley]], showing the most recorded activity in the area since the 1970s.<ref>{{cite news|last=Duke|first=Alan|title=Quake 'swarm' shakes Southern California|url=http://www.cnn.com/2012/08/26/us/california-quake-swarm/index.html|publisher=CNN|access-date=27 August 2012|archive-date=27 August 2012|archive-url=https://web.archive.org/web/20120827120248/http://www.cnn.com/2012/08/26/us/california-quake-swarm/index.html|url-status=live}}</ref>

Sometimes a series of earthquakes occur in what has been called an ''earthquake storm'', where the earthquakes strike a fault in clusters, each triggered by the shaking or [[coulomb stress transfer|stress redistribution]] of the previous earthquakes. Similar to [[aftershock]]s but on adjacent segments of fault, these storms occur over the course of years, with some of the later earthquakes as damaging as the early ones. Such a pattern was observed in the sequence of about a dozen earthquakes that struck the [[North Anatolian Fault]] in Turkey in the 20th century and has been inferred for older anomalous clusters of large earthquakes in the Middle East.<ref>{{cite journal |title=Poseidon's Horses: Plate Tectonics and Earthquake Storms in the Late Bronze Age Aegean and Eastern Mediterranean |journal=Journal of Archaeological Science |year=2000 |author=Amos Nur |issn=0305-4403 |volume=27 |issue=1 |pages=43–63 |url=http://water.stanford.edu/nur/EndBronzeage.pdf |doi=10.1006/jasc.1999.0431 |last2=Cline |first2=Eric H. |bibcode=2000JArSc..27...43N |url-status=dead |archive-date=2009-03-25 |archive-url=https://web.archive.org/web/20090325050459/http://water.stanford.edu/nur/EndBronzeage.pdf}}</ref><ref>{{cite web |url=http://www.bbc.co.uk/science/horizon/2003/earthquakestorms.shtml |title=Earthquake Storms |work=[[Horizon (BBC TV series)|Horizon]] |date=1 April 2003 |access-date=2007-05-02 |archive-date=2019-10-16 |archive-url=https://web.archive.org/web/20191016045550/http://www.bbc.co.uk/science/horizon/2003/earthquakestorms.shtml |url-status=live }}</ref>