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