Figure 1: Back-arc strike-slip activity in the Andreanof Islands
section of the Alaskan/Aleutian trench, from Ekström and Engdahl (JGR,
1989) following the Mw = 8.0 earthquake of May 7, 1986.
Figure 2:Coseismic change in right-lateral Coulomb shear stress
in the upper plate along arc-parallel strike-slip faults for typical parameters
of the 1986 Andreaonof Islands earthquake.
Figure 3: Strike-slip seismicity in the Rat Islands, Aluetians:
Map view of asperity distribution of the Rat Islands Mw = 8.7
earthquake of February 4, 1965, from Beck and Christensen (JGR,
1991). Mechanism of subsequent strike-slip event from Stauder (JGR,
1968).
Figure 4: Coseismic change in left-lateral Coulomb shear stress
in the upper plate along arc-perpendicular fault planes for typical
parameters of the 1965 Rat Islands earthquake. Thus stress changes cannot
distinguish the fault plane in this case.
Figure 5: Back-arc seismicity in Irian Jaya, Indonesia following
the Feb. 17, 1996, Mw = 8.2 earthquake: Feb. 17 - Dec. 1, 1996,
M > 5. The shaded region indicates the position of an inferred asperity
consistent with the seismicity and calculated stress changes.
Figure 6: Coseismic change in left-lateral Coulomb shear stress
in the upper plate along arc-parallel strike-slip faults for typical parameters
of the 1996 Irian Jaya earthquake.
Figure 7: Coseismic change in extensional normal stress in the upper
plate for faults oriented at 30°s from the trench for typical parameters
for Irian Jaya.