Change in stress directions along the central Denali fault, Alaska after the 2002 earthquake sequence. Ratchkovski, N. A. Geophys. Res. Lett., 30(19):2017, 2003. doi abstract bibtex [1] On the basis of earthquake focal mechanisms, the state of stress along the central Denali fault, Alaska system changed after the 2002 earthquake sequence. Before the earthquake sequence, the maximum stress (sigma(1)) was at a 60degrees angle with the Denali fault west of the point of its maximum curvature, fault-normal between the fault apex and the Totschunda strand, and at 50degrees with respect to the Totschunda fault. In the epicentral region, the post-event sigma(1) has rotated counter-clockwise. Along the rest of the rupture zone the sense of rotation is clockwise. The sigma(1) direction became nearly fault-normal along the Totschunda strand. Along the central part of the rupture, sigma(1) is overrotated with sigma(3) being nearly vertical, promoting reverse aftershocks. This could be an indication of dynamic overshoot.
@article{ratchkovski2003,
Abstract = {[1] On the basis of earthquake focal mechanisms, the
state of stress along the
central Denali fault, Alaska system changed after the 2002 earthquake
sequence. Before the
earthquake sequence, the maximum stress (sigma(1)) was at a 60degrees
angle with the Denali fault
west of the point of its maximum curvature, fault-normal between the
fault apex and the Totschunda
strand, and at 50degrees with respect to the Totschunda fault. In the
epicentral region, the
post-event sigma(1) has rotated counter-clockwise. Along the rest of the
rupture zone the sense of
rotation is clockwise. The sigma(1) direction became nearly fault-normal
along the Totschunda
strand. Along the central part of the rupture, sigma(1) is overrotated
with sigma(3) being nearly
vertical, promoting reverse aftershocks. This could be an indication of
dynamic overshoot.},
Author = {Ratchkovski, N. A.},
Date-Modified = {2010-07-12 18:39:39 -0700},
Doi = {10.1029/2003GL017905},
Journal = {Geophys. Res. Lett.},
Number = {19},
Pages = {2017},
Title = {Change in stress directions along the central Denali fault, Alaska after the 2002 earthquake sequence},
Volume = {30},
Year = {2003},
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In the epicentral region, the post-event sigma(1) has rotated counter-clockwise. Along the rest of the rupture zone the sense of rotation is clockwise. The sigma(1) direction became nearly fault-normal along the Totschunda strand. Along the central part of the rupture, sigma(1) is overrotated with sigma(3) being nearly vertical, promoting reverse aftershocks. This could be an indication of dynamic overshoot.","author":[{"propositions":[],"lastnames":["Ratchkovski"],"firstnames":["N.","A."],"suffixes":[]}],"date-modified":"2010-07-12 18:39:39 -0700","doi":"10.1029/2003GL017905","journal":"Geophys. Res. 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Before the\nearthquake sequence, the maximum stress (sigma(1)) was at a 60degrees\nangle with the Denali fault\nwest of the point of its maximum curvature, fault-normal between the\nfault apex and the Totschunda\nstrand, and at 50degrees with respect to the Totschunda fault. In the\nepicentral region, the\npost-event sigma(1) has rotated counter-clockwise. Along the rest of the\nrupture zone the sense of\nrotation is clockwise. The sigma(1) direction became nearly fault-normal\nalong the Totschunda\nstrand. Along the central part of the rupture, sigma(1) is overrotated\nwith sigma(3) being nearly\nvertical, promoting reverse aftershocks. This could be an indication of\ndynamic overshoot.},\n\tAuthor = {Ratchkovski, N. A.},\n\tDate-Modified = {2010-07-12 18:39:39 -0700},\n\tDoi = {10.1029/2003GL017905},\n\tJournal = {Geophys. Res. Lett.},\n\tNumber = {19},\n\tPages = {2017},\n\tTitle = {Change in stress directions along the central Denali fault, Alaska after the 2002 earthquake sequence},\n\tVolume = {30},\n\tYear = {2003},\n\tBdsk-File-1 = {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}}\n\n","author_short":["Ratchkovski, N. 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