Types of volcanoes
There is a division of these companies that are extinct, inactive or active. First - destruction, blurred, does not manifest itself in any action. Volcanoes and eruptions that are dormant thus get the identified data, but their form is preserved in the stomach, which is caused by their attacks. Action - Those whose current or activity history, or information is not available, but who are known to emit volcanic gases and something known as water emissions.
Depending on what type of channel on which the exposure occurs, they may be fracture or central.
Explosions:
Outbreaks appear to be exacerbated and short-lived. Long term ones that sometimes take place over many years and last for centuries. Short - that for a few hours. Large volcanic eruptions, as far as we know from history, are often short-lived, but it is very powerful as a destructive force.
Harpinger is shaking inside the volcano, emitting unusual sounds erupting from the volcanic rock. The process is to start it cold, then replace the white-hot pieces and lava. The average gases and various fragments raised, to a height of 5 km. Known and highly violent eruptions, for example, threw unnamed rock fragments to an altitude of about 45 kilometers.
Pollution:
During volcanic eruption, the source is at different distances - to tens of thousands of kilometers. Depending on the explosive strength and the amount of debris accumulated in the material, can reach up to ten kilometers per cubic meter. Sometimes the volcanic ash is so dark that even daylight fades into darkness.
Before the arrival of the lava, but after a powerful eruption, sometimes there was an incredibly powerful wall built of ash, gas and rocks. This pyroclastic flow. Its internal temperature varies from 100 to 800 degrees. The rate can be between 100 km / h and 700.
According to researchers most recently, when Vesuvius erupted, it was the pyroclastic flow responsible for most deaths. Previously, it was thought that people in Pompeii died of suffocation, but residual X-ray studies found the data portrayed differently. For example, scientists believe that the living temperature of the inhabitants of Stabiae in Herculaneum was approaching 800 degrees, and caught the pyroclastic flow. Both small towns are being exterminated from the earth for a minute, and the inhabitants are being killed on the spot. Previously, Bombay got only the fourth pyroclastic flow, with temperatures that were "only" about 200 degrees. This belief is based on the fact that the remains of the settlers in the villages burned the skeletons, and the bodies of the Pompeian’s were almost intact before being covered in ashes and lava flood.
The pyroclastic flow of the volcano is such that it can easily pass over water barriers, and only move on land. Heavy materials, liquid deposits in its mass, but gas, accelerates with forward force moves, loses power and cools nowhere mentioned. Water can cross the pyroclastic flow and rise above sea level.
Explosions of our time:
Over the past hundred years, there have been many major earthquakes around the world that have served as the cause of climate change. Even the last few decades have changed little more than unpleasant surprises. Since the eruptions have killed tens of thousands of people, the hectare of destroyed fertile land is irrelevant in the city.
Then a particularly powerful eruption on all continents can change the weather. Gray particles reflect sunlight and remain in the atmosphere. Temperatures on the planet were 3 degrees below normal in the following course of the last time annual eruption.
The most powerful eruption of the 20th century occurred in the Philippines in 1911. Nearly one and a half thousand people were killed, more than 2 million sleeping square kilometers of volcanic rock land fell. Currently, this volcano is considered one of the most dangerous.
Disaster:
Most scientists are reluctant to hope that in the future we can expect something more terrible. For years, experts have been exploring Yellowstone. They are not interested in the volcano in which the park, which is interesting for tourists to visit, and occupies almost the entire area. Its diameter is about 70 kilometers which is incredible for the object. Also, 100 km from the source surface, and only 8-16 km. No magma.
According to scientists, the Yellowstone eruption could destroy the United States, but most, if not all, life on the planet. All demolished more than a hundred kilometers from the pyroclastic source, the ashes are directly affected by the Canadian eruption and the most lenient of the United States.
Powerful earthquakes cause a tsunami in the Pacific Ocean. Even these giant waves can reach as far as the center of the continent. Materials in megatons are left in the atmosphere, cooling and nuclear winter thus, not allowing sunlight to reach the planet's surface. According to various forecasts, it will last from 3 to 5 years. During this time most of the plants, animals and humans need time to die.
It is believed that only in the first months of his life he would lose a third of the world's population. And high probability and death from water scarcity; it will be exposed to toxic sediment contamination. Once the winter is over, the survivors will be exposed to the incredible greenhouse effect.
The duration of this catastrophe has not been precisely defined. Scientists call the interval from 10 to 75 years (starting point - until now), although they cannot agree on the basis of which this happens, they believe that this will be a powerful eruption.
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