Agriculture & Biology
aquifers
91%
base flow
10%
bedrock
17%
climate change
55%
groundwater
19%
groundwater extraction
11%
highlands
60%
hydrogen
5%
oxygen isotopes
8%
peat
12%
peatlands
7%
plateaus
5%
radon
8%
rain
9%
sampling
4%
sandstone
16%
summer
3%
surface water
6%
swamps
77%
terrestrial ecosystems
7%
tracer techniques
5%
urbanization
6%
valleys
5%
water
27%
winter
3%
Medicine & Life Sciences
Climate
76%
Climate Change
8%
Ecosystem
6%
Groundwater
97%
Hydrogen
6%
Oxygen Isotopes
11%
Oxygen-18
11%
Radon
8%
Soil
13%
Urbanization
7%
Water
44%
Wetlands
94%
Social Sciences
climate
51%
climate change
14%
Groundwater samples
2%
integrity
57%
interference
63%
Surface waters
24%
urbanization
15%
water
51%
Water sources
100%
Earth & Environmental Sciences
aquifer
48%
baseflow
6%
bedrock
10%
catchment
9%
climate
35%
climate change
3%
groundwater
10%
groundwater extraction
8%
headwater
6%
hydrogen
4%
mountain
3%
oxygen isotope
5%
peat
11%
peatland
6%
plateau
4%
radon
6%
rainwater
12%
relief
5%
sandstone
9%
summer
3%
surface water
4%
swamp
71%
terrestrial ecosystem
6%
tracer
4%
upland region
8%
urbanization
4%
valley
4%
water
20%
winter
3%
Chemistry
Blue
12%
Catchment
56%
Dioxygen
8%
Ecosystem
19%
Flow
10%
Groundwater
71%
Hydrogen
8%
Isotope
14%
Mining
18%
Peat
43%
Shape
10%
Surface Water
17%