000002940 001__ 2940
000002940 005__ 20160920110225.0
000002940 0247_ $$2DOI$$a10.1002/2016GL070815
000002940 037__ $$aSCART-2016-0018
000002940 100__ $$aCalais, E.
000002940 245__ $$aA New Paradigm for Large Earthquakes in Stable Continental Plate Interiors
000002940 260__ $$c2016
000002940 520__ $$aLarge earthquakes within stable continental regions (SCR) show that significant amounts of elastic strain can be released on geological structures far from plate boundary faults, where the vast majority of the Earth's seismic activity takes place. SCR earthquakes show spatial and temporal patterns that differ from those at plate boundaries and occur in regions where tectonic loading rates are negligible. However, in the absence of a more appropriate model, they are traditionally viewed as analogous to their plate boundary counterparts, occuring when the accrual of tectonic stress localized at long-lived active faults reaches failure threshold. Here we argue that SCR earthquakes are better explained by transient perturbations of local stress or fault strength that release elastic energy from a pre-stressed lithosphere. As a result, SCR earthquakes can occur in regions with no previous seismicity and no surface evidence for strain accumulation. They need not repeat, since the tectonic loading rate is close to zero. Therefore, concepts of recurrence time or fault slip rate do not apply. As a consequence, seismic hazard in SCRs is likely more spatially distributed than indicated by paleoearthquakes, current seismicity, or geodetic strain rates.
000002940 594__ $$aNO
000002940 6531_ $$aIntraplate earthquake
000002940 6531_ $$aStable continental regions
000002940 6531_ $$aTransient perturbations of local stress
000002940 6531_ $$aSeismic hazard
000002940 700__ $$aCamelbeeck, T.
000002940 700__ $$aStein, S.
000002940 700__ $$aLiu, M.
000002940 700__ $$aCraig, T.J.
000002940 773__ $$pGeophysical Research Letters$$v43$$y2016
000002940 8560_ $$fmichel.vancamp@observatoire.be
000002940 905__ $$apublished in
000002940 980__ $$aREFERD