How do volcanoes lead to tsunamis
Natural disasters: the end of civilization
A natural disaster is an undesirable serious event that arises from natural processes on earth (or space). A natural disaster can result in loss of life or property, and often leaves you with economic damage.
An adverse event will not reach disaster proportions if it occurs in an area with no population at risk. In short, for a natural disaster to arise from a natural phenomenon, life must be endangered or (and) property damage to the infrastructure must occur.
Examples of natural disasters are floods, storms, volcanic eruptions, earthquakes, tsunamis, avalanches and other geological and climatic processes. Astronomical events such as radiation storms or the impact of asteroids are rarer. Although these are relatively rare in terms of geological history, they often have global effects and can cause mass extinction.
The most famous of these mass extinctions defined the end of the Cretaceous Earth Age and caused the extinction of the dinosaurs. The trigger for this is assumed to be an asteroid impact 66 million years ago. This took place at about the same time as the eruption of the Dekkan Trapp, which may have contributed to the mass extinction.
Damage from natural disastersEvery year natural disasters result in high damage to property, which is statistically recorded in the insurance companies' damage reports. Every year, an average of 54,000 people die as a result of natural disasters. The property damage amounts to several hundred billion US dollars. In recent years, however, there have been several strong earthquakes and tsunamis, so that in the short term the number of fatalities more than doubled. A significant increase in climatic disasters (climate change) caused property damage to increase dramatically. In 2017, for example, there were an unusually large number of strong hurricanes on the east coast of the USA. In the west, however, there was a drought, which favored fires.
Climatic natural disastersIn general, natural disasters can be classified into different classes, depending on how they are triggered and where they have an effect. The most common are disasters that are directly or indirectly related to climatic phenomena. The greatest danger comes from storms, which have the most varied of manifestations. Here in Europe, hurricanes cause damage every year. Cyclones such as hurricanes, cyclones and typhoons rage in tropical regions. Further north there are tornadoes and blizzards. Floods can occur as a result of storms, but in some regions of the world they are also associated with seasonal rainy seasons. Floods cause rivers to burst their banks, and storm surges can flood entire regions along the coast. Mudslides and landslides can be caused by heavy rain. Avalanches are also a good example of comprehensive natural disasters, because geology plays an important role in whether or not a debris avalanche occurs. This brings us to the endogenous events in which geological processes play a major role.
Endogenous natural disastersIn these natural disasters, the focus is on processes that are directly connected to the earth's body. Tectonic events trigger earthquakes, which can cause further catastrophes such as tsunamis or landslides. Volcanic eruptions also depend on the processes in the earth's interior, are on the one hand associated with earthquakes and can also trigger secondary natural disasters. These include landslides or even the collapse of a volcanic flank, which in turn can trigger tsunamis when the landslide masses crash into the sea. Large volcanic eruptions can have catastrophic effects on the climate, which can lead to famine. This is especially true for super volcano eruptions. These are able to cause a volcanic winter lasting several years. The eruption of the Toba super volcano plunged the earth into a particularly cold period of the Ice Age and wiped out almost all of humanity.
Exogenous natural disastersExogenous forces are also able to have a massive influence on the climate of our planet. The best known are the climatic changes that can be triggered by the impact of an asteroid. In analogy to the volcanic winter, a global winter can be triggered when enormous masses of dust darken the earth, which are thrown up by an impact. In addition, pressure and heat waves hold enormous potential for destruction. If an asteroid hits the ocean, tsunamis occur. Here, too, water vapor could influence the global climate.
Radiation storms occur when there is a large eruption on the sun. If the earth falls into a particle storm, not only can polar lights arise, but electrical devices and satellites can also be destroyed. A heating of the atmosphere is conceivable. The same could also be blown into space by the solar storm. In the history of the earth, at least one of the 7 major mass extinctions is said to be due to one of these solar storms called flare.
Global annihilationGlobal natural disasters don't happen often, but they do happen again and again. So we don't have to ask ourselves whether something like this will happen, but when? It is very likely that human civilization will be history by then, since man will have provoked his own downfall. Anthropogenic climate change is already hanging over us like the sword of Damocles, as is nuclear annihilation. Mankind does not seem to be able to overcome these dangers, so it was only in January 2018 that the doomsday clock was set to 2 minutes before 12 o'clock.
Natural disasters and natural phenomena
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