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Nature 441, 704-705 (8 June 2006) | doi:10.1038/441704a; Published online 7 June 2006
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Earthquakes: A hand on the aftershock trigger
Ian Main1
Abstract
Received wisdom relates that static stress change associated with an earthquake mainshock is the prime mover of its aftershocks. But a fresh look at the data points the finger at wave-surfing dynamic stress.
When a door is jammed, there are various things you can do to dislodge it — that is, to overcome the frictional resistance between it and its frame. You can nonchalantly push a bit harder (apply a static stress).
- Ian Main is in the School of Geosciences, University of Edinburgh, West Mains Road, Edinburgh EH9 3JW, UK.
Email: ian.main@ed.ac.uk
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