GROUND WATER ATLAS of the UNITED STATES
Alaska, Hawaii, Puerto Rico and the U. S. Virgin Islands
HA 730-N
Alaska Regional summary
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Permafrost
Figure 5 Map showing permafrost zones in Alaska (25K)
editable eps file N005.eps.gz
(200K compressed)
Figure 6 Diagrammatic section showing the
approximate depth of the permafrost (29K)
editable eps file N006.eps.gz
(177K compressed)
Figure 7 Photograph showing the small "thaw
lakes" that form in the continuous permafrost areas (31K)
editable eps file N007.eps.gz
(5.3M compressed)
Figure 8 Photograph showing the pingos that form
in the permafrost areas (25K)
editable eps file N008.eps.gz
(4.2M compressed)
editable eps file N005.eps.gz
(200K compressed) 
editable eps file N006.eps.gz
(177K compressed) 
editable eps file N007.eps.gz
(5.3M compressed) 
editable eps file N008.eps.gz
(4.2M compressed)