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Natural hazards are caused by the interaction of physical and human processes, discuss.

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Natural hazards are caused by the interaction of physical and human processes, discuss. The earth has been producing hazards for millennia these include earthquakes and volcanoes caused by the movement of tectonic plates, and also wind and water elated disasters such as tornadoes and tsunamis, these can be varied by a countries location such as suffering drought due to be land locked or an island, also the relief on the land can contribute greatly to the hazards it faces.. All of these cause great destruction and can involves lots of energy, these events do not become disasters unless there are human factors involved, when people live on a fault line they are risking suffering from an earthquake, this combination of physical and human processes can lead to large losses not only in lives but also monetary due to lost land, employment and homes. The problems associated with a hazard may be short lived on continue for decades, drought can effect a region for over 5 years, ...read more.


LEDCs, thus evacuation and warning is not available, this can be seen in the Grecian city of Pompeii which was engulfed by a volcano with very little warning the result being the loss of almost all of the city and its inhabitants. Some natural hazards can be effected by the actions of humans, the deforestation of forests in Indonesia is suspected to have contributed to the mudslides their, the resulting loss of life could be blamed on illegal logging which had occurred. The flood risk of countries is also increased by the urbanisation of land, the concrete and other impermeable surfaces used mean that water reaches rivers faster which can cause the river to burst it's banks, this occurred in Berkshire and other urban areas by the M4 which closely follows the route of the river Thames and its tributaries, this had flooded many time in recent years and the problem in acerbated by the increased urbanisation of the land. ...read more.


These combined with earthquakes can cause mass movement of the land; this can result in further human related complications as fires are started by broken gas mains. Also when land is built on reclaimed land such as sand reclamation on the west coast of America, an earthquake could cause liquefaction to occur turning the once stable base of people's homes into a river of mud and sand. Very few of these events would become a hazard unless humans were either living their or has contributed to the actual problem, land which has no population frequently shows no ill effects of these natural processes and in some it has positive effects, when Egypt was only populated by very few the yearly flooding of the Nile ensured that the farm land was irrigated and also had fresh nutrient, now the dam means this no longer occurs and if the dam breaks a huge flood killing millions could result. Peter Allen ...read more.

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