Earth & Environmental Sciences
permafrost
100%
groundwater flow
64%
groundwater
50%
plateau
26%
warming
23%
headwater
21%
aquifer
20%
temperature
19%
active layer
18%
river
18%
thermal regime
15%
dissolved organic carbon
13%
degradation
12%
sediment
12%
thawing
11%
surface temperature
11%
temperature profile
10%
aquitard
10%
flow velocity
9%
recharge
9%
sea level rise
9%
basin
9%
hydrogeology
9%
streamflow
9%
particle size
9%
hydraulics
8%
carbon
8%
modeling
8%
climate
7%
pingo
7%
GRACE
7%
groundwater abstraction
7%
suspended particulate matter
7%
water
7%
solute
7%
rate
6%
reactivation
6%
calibration
6%
frozen ground
6%
fire history
6%
freezing
6%
saline intrusion
6%
in situ
6%
electrical resistivity
6%
water extraction
6%
water budget
6%
hydraulic conductivity
6%
mobilization
6%
organic carbon
5%
evapotranspiration
5%
Agriculture & Biology
permafrost
41%
groundwater flow
20%
Yellow River
14%
plateaus
13%
China
9%
heat
9%
soil thermal properties
9%
thawing
8%
fire history
8%
groundwater
7%
stream flow
7%
degradation
7%
rare earth elements
7%
sediments
7%
Fagus sylvatica subsp. sylvatica
6%
cables (equipment)
6%
Fagus sylvatica
5%
surface temperature
5%
Pseudotsuga menziesii
5%
organic carbon
5%
temperature profiles
5%
forest fires
5%
topography
5%
trace elements
5%