![](https://webarchive.library.unt.edu/web/20090508032635im_/http://nsf.gov/images/x.gif) News From the Field Fingerprinting Slow Earthquakes
![](https://webarchive.library.unt.edu/web/20090508032635im_/http://nsf.gov/images/greenlineshort.jpg)
April 23, 2009
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The most powerful earthquakes happen at the junction of two converging tectonic plates, where one plate is sliding (or subducting) beneath the other. Now a team of researchers, led by Teh-Ru Alex Song of the Carnegie Institution, has found that an anomalous layer at the top of a subducting plate coincides with the locations of slow earthquakes and non-volcanic tremors. Such a layer in similar settings elsewhere could point to other regions of slow quakes.
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Source Carnegie Institution
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