measurement: dirt + tundra
12000
9000
6000
3000
present day
pril
may 15
june 1
june 15
july 1
july 15
OZEN
tundra soil buried under snow.
active layer frozen.
active layer frozen.
75% total depth
85% total depth 15”
pt 15
oct 1
oct 15
nov 1
nov 15
dec
98% total depth 17.75”
max depth ~18”
region above base of active layer unfrozen.
active layer completely frozen
FROZEN
otal depth 7.25”