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Additionally, global warming caused by climate change and other human impact on the environment, can increase the frequency of natural events (such as extreme weather) which trigger landslides. [9] Landslide mitigation describes the policy and practices for reducing the risk of human impacts of landslides, reducing the risk of natural disaster .
The term natural disaster has been called a misnomer already in 1976. [6] A disaster is a result of a natural hazard impacting a vulnerable community. But disasters can be avoided. Earthquakes, droughts, floods, storms, and other events lead to disasters because of human action and inaction.
[22] [23] [24] A disaster happens when a natural or human-made hazard impacts a vulnerable community. It results from the combination of the hazard and the exposure of a vulnerable society. Nowadays it is hard to distinguish between natural and human-made disasters. [21] [25] [26] The term natural disaster was already challenged in 1976. [24]
Hazard maps are created and used in conjunction with several natural disasters. [1] Different hazard maps have different uses. For instance, the hazard map created by the Rizal Geological Survey is used by Rizalian insurance agencies in order to properly adjust insurance for people living in hazardous areas. [2]
Natural catastrophes (sometimes referred to as "nat cat") [2] that are modeled include: Hurricane (main peril is wind damage; some models can also include storm surge and rainfall) Earthquake (main peril is ground shaking; some models can also include tsunami, fire following earthquakes, liquefaction, landslide, and sprinkler leakage damage)
The natural profile is often highly irregular with large areas of natural creep, so that its shallow development can make some areas unserviceable as a cutting or infill point. Where the buried shapes of older landslides are complicated, depositing infill material in one area can trigger a new landslide.
Costliest natural disaster in the United States prior to Hurricane Katrina. 1988 Wildfire: 2 $240 million Yellowstone fires of 1988: Yellowstone National Park, Wyoming 793,880 acres (36% of the park) was burned in the fires started by lightning. 1985 Hurricane: 9 $1.3 billion Hurricane Elena: Florida, Alabama, Mississippi, Louisiana, Arkansas ...
Natural Hazards Data from NOAA National Geophysical Data Center "When Nature Attacks" from Newsweek; World's worst natural disasters since 1900; Earthquake Hazards Program – USGS; EM-DAT: The International Disaster Database managed by the Centre for Research on the Epidemiology of Disasters; Disasters Database Report from Emergency Management ...