Earth & Environmental Sciences
aquifer
12%
basin
5%
borehole
5%
carbon
10%
dissolved inorganic carbon
31%
electrical resistivity
48%
evapotranspiration
8%
feedback mechanism
9%
geochemistry
6%
geometry
6%
GIS
6%
groundwater
24%
isotopic composition
6%
lake
13%
oil
9%
pedogenesis
9%
pedon
10%
perturbation
6%
recharge
8%
rift zone
10%
river
16%
seismic refraction
18%
semiarid region
8%
silt
5%
solute
16%
solute transport
8%
structural control
9%
tectonics
6%
time series
5%
tomography
6%
transpiration
18%
water
7%
water chemistry
8%
water quality
10%
watershed
8%
wetland
7%
Physics & Astronomy
aquifers
24%
boreholes
10%
Botswana
100%
clays
10%
direct current
12%
electrical resistivity
20%
fresh water
13%
ground water
28%
imaging techniques
7%
lakes
21%
margins
18%
oils
7%
refraction
14%
sediments
5%
sounding
5%
transpiration
11%
water quality
12%
Engineering & Materials Science
Aquifers
20%
Boreholes
10%
Clay
6%
Feedback
5%
Groundwater
28%
Imaging techniques
18%
Lakes
9%
Oils
10%
Refraction
10%
Rivers
9%
Soils
5%
Solute transport
13%
Time series
6%
Transpiration
11%
Water quality
10%
