icequakes
Glacial seismic events
Icequakes are seismic events caused by sudden cracking or movement in ice.
They occur in glaciers, ice sheets, and frozen ground when temperature changes cause rapid expansion or contraction.
The term also describes the cracking sounds heard on frozen lakes and rivers: We heard icequakes all night as the temperature dropped.
Slow-moving ice mass
- crevasseDeep glacial fissure
- calvingIce mass separation
- AntarcticSouthern polar region
- GreenlandLargest island on Earth
iceberg · seismology · fracture · stress · strain · polar · rifting · meltwater
Involuntary rhythmic shaking
- crackingBreaking without separating completely
- ruptureViolent tearing apart
- vibrationRapid oscillating movement
- permafrostPerpetually frozen earth layer
frozen ground · subsurface · seismograph · epicenter · magnitude · shock · groundwater · freezing
Galilean moon with subsurface ocean
- EnceladusIcy moon with geysers
- moonNatural planetary satellite
- extraterrestrialBeing from outer space
- NASAFederal space exploration bureau
astrobiology · tectonic · Jupiter · Saturn · space exploration · geophysics · probe · detection
glacier
Slow-moving ice mass
Greenland · iceberg · seismology · fracture · stress · strain · polar · rifting · meltwater · glaciology
tremor
Involuntary rhythmic shaking
- crackingBreaking without separating completely
- ruptureViolent tearing apart
- vibrationRapid oscillating movement
permafrost · frozen ground · subsurface · seismograph · epicenter · magnitude · shock · groundwater · freezing · expansion
Europa
Galilean moon with subsurface ocean
- EnceladusIcy moon with geysers
- moonNatural planetary satellite
- extraterrestrialBeing from outer space
NASA · astrobiology · tectonic · Jupiter · Saturn · space exploration · geophysics · probe · detection · habitability