Читать книгу Disaster Response and Recovery - David A. McEntire - Страница 22

Natural hazards are those events originating from the physical environment, typically because of radiation from the sun, heat flow within the earth or the force of gravity. These natural hazards occur in and across three arenas of action (Mileti 1999):

 The atmosphere (the air surrounding the earth that is made up of various gasses)

 The hydrosphere (the earth’s water system)

 The lithosphere (the earth’s crust)

Natural hazards are classified as having atmospheric, geologic, hydrologic, seismic, volcanic and wildfire origins. There are also other types of natural hazards that will be described in Sections 1.2.2–1.2.7.

Figure 1‐2 Hurricane Sandy struck the northeast and destroyed this roller coaster on the boardwalk in Seaside Heights, NJ. Liz Roll/FEMA.Adapted from http://www.nhc.noaa.gov/aboutsshws.php