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Yamal Peninsula
3
crater
3
gas blowout
3
permafrost
3
pingo
3
Arctic
2
gas explosion
2
pingo-like feature (PLF)
2
remote sensing (RS)
2
unmanned aerial vehicle (UAV)
2
ArcticDEM
1
digital elevation model (DEM)
1
gas emission
1
gas hydrates
1
ground penetrating radar (GPR)
1
methane
1
perennial heave mounds (PHMs)
1
underground cavity
1
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