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Natural environment
Related to any physical feature of the earth's natural environment.
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Add a new termContributors in Natural environment
Natural environment > Earthquake 
critical facilities
Natural environment; Earthquake
Structures whose functioning during an emergency is essential or whose failure would endanger many lives. May include: structures such as nuclear power plants or large dams whose ...
geotechnical
Natural environment; Earthquake
Related to the use of scientific methods and engineering principles to acquire, interpret and apply knowledge of earth materials to solving engineering problems.
crust
Natural environment; Earthquake
The outermost major layer of the earth; ranging from 35 to 45 km thick and with a compressional seismic wave velocity (in rock) between 3.0 and 7.5 km/s.
debris flow
Natural environment; Earthquake
A moving mass of rock fragments, soil, and mud, more than half ofthe particles being larger than sand size.
graben
Natural environment; Earthquake
A block of the earth's crust, usually elongated, that has subsided relative to adjacent rocks along bounding faults.
Sub-categories
- Air (43)
- Atmosphere (59)
- Climate (1147)
- Climate change (10457)
- Coral reefs (23903)
- Deserts (738)
- Earthquake (7143)
- Flood (34)
- Forests (37)
- Grassland (35)
- Land mass (144)
- Landslide (66)
- Mountains (203)
- Plateau (39)
- Speleology (1857)
- Volcano (5852)
- Water (18527)