Natural geologic features and processes are considered geologic hazards only when they could affect people, infrastructure, or other sensitive areas. Many natural features and processes can be categorized as geologic hazards, including:
- Landslide Hazards—Mass Wasting (earth flow, rockfall, debris flow, slump, avalanche)
- Flood (extreme weather events, higher susceptibility due to wildfire, coastal storm surge)
Glacial Outburst Floods—Jökulhlaups
- Liquefaction (including lateral spreading)
- Volcanic eruption (ash fall, pyroclastic flow, lahar, lava flow)
- Sinkholes and cave collapse
- Dust Storms
Human activities can influence the the rate and magnitude of geologic processes, and introduce or concentrate hazardous materials.
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