Earth & Environmental Sciences
groundwater
100%
aquifer
89%
recharge
61%
electrical resistivity
59%
alluvial fan
57%
geological structure
35%
tomography
33%
isotope
31%
electrical method
30%
induced polarization
27%
electromagnetic method
27%
bedrock
26%
groundwater flow
25%
flow modeling
25%
hydrogeology
24%
basin
24%
pollutant transport
23%
vulnerability
21%
heavy metal
20%
water
19%
water resource
19%
hydrochemistry
17%
contamination
17%
stable isotope
16%
river
15%
geophysical survey
14%
vertical electrical sounding
13%
ion exchange
13%
basalt
13%
detection
12%
weathering
11%
transmissivity
10%
analysis
9%
flow pattern
9%
mercury
8%
ion
8%
flash flood
8%
salinization
8%
pollution
8%
metal
7%
gold
7%
hydraulic conductivity
7%
upland region
7%
infiltration
7%
residence time
7%
rainfall
6%
hydrologic cycle
6%
lacustrine deposit
6%
water quality
6%
clay
6%
Agriculture & Biology
Bolivia
74%
aquifers
73%
groundwater
63%
alluvial aquifer
53%
bedrock
30%
Nicaragua
29%
stable isotopes
28%
hydrochemistry
27%
highlands
24%
ion exchange
24%
saline water
23%
isotopes
21%
lacustrine sediments
20%
basins
19%
rivers
19%
water salinization
19%
Paria
17%
water
13%
tomography
11%
electrical resistance
10%
methodology
9%
rain
8%
hydrologic cycle
7%
carbon radioisotopes
7%
deuterium
6%
tritium
6%
infiltration (hydrology)
6%
space and time
5%
dry environmental conditions
5%
environmental degradation
5%
evaporation
5%
river valleys
5%
electrical conductivity
5%
water pollution
5%
