Publication Date:
2003
Description:
The Mw (moment magnitude) 7.9 Denali fault earthquake on 3 November 2002 was
associated with 340 kilometers of surface rupture and was the largest strike-slip
earthquake in North America in almost 150 years. It illuminates earthquake mechanics and
hazards of large strike-slip faults. It began with thrusting on the previously
unrecognized Susitna Glacier fault, continued with right-slip on the Denali fault, then
took a right step and continued with right-slip on the Totschunda fault. There is good
correlation between geologically observed and geophysically inferred moment release. The
earthquake produced unusually strong distal effects in the rupture propagation
direction, including triggered seismicity.
Keywords:
Earthquake
;
USA
;
Magnitude
;
seismic Moment
;
Seismicity
;
Aftershocks
;
Earthquake hazard
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