What is a Natural Hazard




What is a Natural HazardCommunities spring up on terraces, plains and dune systems that have been developed by natural hazards including earthquake faulting, floods, changes in sea level and wave action.

The main natural hazards are:

river flooding

coastal flooding

erosion

earthquakes

volcanic activity

landslides

geothermal activity

Common Types of Natural Hazards:

Natural hazards could be classified into a number of broad categories: hydrological hazards, geological hazards, biological hazards and meteorological hazards.

Natural Hazards and Disasters

A natural hazard is a risk of a naturally taking place event will have a damaging effect on humans. This damaging effect is what we say a natural disaster. Quite simply when the hazardous threat actually occurs and harms humans, we call the event a natural disaster.

Natural Hazards and disasters are the outcome of naturally taking place processes that have operated during Earth's history. Many hazardous procedure are also Geologic Processes.

Geologic processes impact every human on our planet all of the time, however are most noticeable when they cause loss of life or property. If the procedure that poses the hazard takes place and damages human property or life, then a natural disaster has took place. Among the natural hazards and possible disasters to be considered are:     

Volcanic Eruptions

Earthquakes

Landslides

Tsunami

Subsidence

And

Droughts

Floods

Tornadoes

Hurricanes

Asteroid Impacts

Examples of Natural Hazards

Risk is characteristic of the connection between geologic processes and humans. Most of us take risks daily. The risk through natural hazards, although it cannot be removed, can, in some instances be understood in a such a way that we can reduce the hazard to humans and thus reduce the risk. 

Some examples of natural hazards are:

Floods: Often occur when there has been lots of heavy rain because the ground becomes saturated, so there is nowhere for the rainfall to go. Another reason for flooding is deforestation or a lack of the plantation of trees and plant, because not so much water is being absorbed by roots.

Tsunamis: Huge waves which travel at fast speeds from the epicenter of an earthquake. They occur at destructive and conservative plate boundaries and must involve an oceanic plate.

Wildfires: Wildfires often occur after warm and wet periods of time, so there is lots of vegatation, some of which can be flammable. The actual fire happens during a hot, dry spell, when there are lots of plants which easily catch on fire.

Landslides: When mass movement occurs, which is large amounts of land moving downwards due to saturation or seismic waves from earthquakes.





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