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Arctic
6
Yamal Peninsula
6
permafrost
6
pingo
5
crater
4
gas blowout
4
gas hydrates
4
methane
4
Geology
3
QE1-996.5
3
gas explosion
3
pingo-like feature (PLF)
3
Arctic Ocean
2
BSR
2
CDP seismic
2
Gulf Stream
2
World Ocean
2
methane hydrates
2
perennial heave mounds (PHMs)
2
pockmarks
2
remote sensing (RS)
2
underground cavity
2
unmanned aerial vehicle (UAV)
2
ArcticDEM
1
T
1
Technology
1
digital elevation model (DEM)
1
gas emission
1
ground penetrating radar (GPR)
1
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