Time-Variable Deformation in the New Madrid Seismic Zone

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Science  13 Mar 2009:
Vol. 323, Issue 5920, pp. 1442
DOI: 10.1126/science.1168122

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New geodetic measurements show that the New Madrid is currently deforming too slowly, if at all, to account for large earthquakes in the region over the past 5000 years. This result, together with increasing evidence for temporal clustering and spatial migration of earthquake sequences in continental interiors, indicates that either tectonic loading rates or fault properties vary over a few thousand years.

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