Geomorphic hazards are influenced by rock type, rock structure and prevailing weather conditions. Climatic hazards may be influenced by short or long term, regional or local climate trends.
It is continuous process that goes on uninterruptedly involving phenomena, big and small, material and non-material that make over physical and socio-cultural environment.
It is a process present everywhere with variations in terms of magnitude, intensity and scale. Change can be gradual or slow process like the evolution of land forms and organisms and it can be as sudden and swift as volcanic eruptions, tsunamis, earthquakes and lightening etc.
Similarly, it may remain confined to a smaller area occurring within a few seconds like hailstorms, tornadoes and dust storm, and it can also have global dimensions such as global warming and depletion of the ozone layer.
Besides, these changes have different meanings for different people.
It depends upon the perspective one takes while trying to understand them. From the perspective of nature, changes are value-neutral. But from the human perspective, these are value-loaded.
There are some changes that are desirable and good like the changes of season, ripening of fruits, while there are others like earthquakes, floods and wars that are considered bad and undesirable.
Natural hazards are elements of circumstances in the natural environment that have the potential to cause harm to people or property or both.
These are the phenomena that pose a threat to people, structures or economic assests and which may cause a disaster. They can be man made or naturally occurring in our environment. Broadly, hazards can be classified into three categories depending upon the causes. These are caused by the forces of nature and man has no role to play in such hazards.The nature of volcanic hazards is often classified by the violence of the explosion and thus is assigned a number from the Volcanic Explosivity Index (VEI), for instance Icelandic and Hawaiian volcanoes which erupt basaltic lava - which has a low silica content and a basic chemical composition; it reaches a maximum temperature of degrees.
Natural hazards caused by plate tectonics are earthquakes, volcanic eruptions (and tsunamis – secondary effect of the first two).
It is important to understand that there is a clear division between a natural hazard and a natural disaster. Environmental hazards Essay Sample. The whole doc is available only for and the erosive power of flowing water and ice. The Yellowstone Supervolcano is the volcanic field which produced the past three supereruptions from the Yellowstone hotspot.
he was surrounded by the beauty and tranquillity of nature. Frost, through his poems. Analyse the factors that cause differences in the hazards posed by volcanoes around the world.
Volcanoes and their hazards have posed many problems across the world since they were formed. Due to their often aggressive activity they have been damaging to variations of human life.
However these. Environmental Hazards Essay An environmental hazard is a threat posed by the natural or built environment to humans and the things that are valued in human society.
An environmental hazard becomes a disaster when the threat is realized and causes significant human loss. A natural hazard is a natural event that has a significantly negative effect on people or the environment. Many natural hazards are related.
For example drought can lead to famine and earthquakes can form tsunamis and landslides.