Physics & Astronomy
landforms
100%
peat
88%
ground penetrating radar
84%
vapor phases
42%
marshlands
24%
vegetation
21%
lakes
20%
estimates
13%
gases
11%
vertical distribution
11%
confidence limits
10%
profiles
8%
soils
7%
statistical analysis
7%
spatial distribution
6%
refractivity
5%
high resolution
4%
Agriculture & Biology
ground-penetrating radar
92%
landforms
75%
peat
55%
gases
39%
bogs
14%
lakes
9%
vegetation
8%
peat soils
8%
refractive index
7%
gas production (biological)
6%
Archaea
6%
statistical analysis
5%
spatial distribution
4%
Engineering & Materials Science
Landforms
85%
Peat
76%
Radar
42%
Gases
30%
Lakes
12%
Refractive index
6%
Spatial distribution
5%
Statistical methods
4%
Soils
4%
Earth & Environmental Sciences
ground penetrating radar
55%
landform
50%
peat
49%
gas
26%
Glacial Lake Agassiz
19%
peatland
12%
vertical profile
11%
peat soil
7%
gas storage
7%
vegetation
7%
refractive index
6%
vertical distribution
5%
statistical analysis
4%
spatial distribution
4%
Chemical Compounds
Peat
70%
Gas
27%
Volume
9%
Velocity
8%
Column Like Crystal
6%
Refractive Index
5%
Soil
4%
Surface
3%