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permafrost
BIOSPHERE, ECOSYSTEMS, FRESHWATER ECOSYSTEMS, LAKE/POND
2
thermokarst
2
AERIAL PHOTOGRAPHS, CAMERA
1
AIRCRAFT, MULTI-SPECTRAL
1
Alaska
1
CLIMATE INDICATORS, TERRESTRIAL HYDROSPHERE INDICATORS, RIVER/LAKE ICE FREEZE,
1
CRYOSPHERE, SNOW/ICE, LAKE ICE,
1
NDWI
1
Russia
1
SPOT-1, HRVIR
1
Siberia
1
TERRESTRIAL HYDROSPHERE, SNOW/ICE, LAKE ICE,
1
TERRESTRIAL HYDROSPHERE, SURFACE WATER, SURFACE WATER FEATURES, LAKES/RESERVOIRS
1
area
1
biogeochemistry
1
ecosystems
1
frozen lakes
1
geochemistry
1
lake
1
lake ice
1
lakes
1
orthorectified aerial photos
1
perimeter
1
permafrost forests
1
photochemistry
1
research
1
shoreline
1
thermokarst lakes
1
watershed hydrology
1
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