Figure 3. Vostok (Antarctica) ice core tem-
perature inferences (after Jouzel et al. 1987)
a. Based on Vostok (Antarctica) ice core
temperature inferences.
b. Based on East Siberia model.
c. Based on Brigham and Miller (1983) data
for Barrow, Alaska.
Figure 4. Permafrost surface paleotemperature model for Prudhoe Bay, Alaska (after Osterkamp
and Gosink 1991).
4