Negative Effects of Volcanic Eruptions
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LET US START THIS YEAR WITH A BOOM!
Happy New Year everyone. This 2018, there will be a lot of changes to yourself as well as your surroundings. Like volcanoes, you also can have negative effects on what you will do this year. Are you ready to know negative effects of volcanic eruptions? Don't be afraid of having negatives because we can make solutions with that. Are you ready?
Several things are happening after an volcanic eruption. We are done discussing the positive effects of volcanoes. Let us go to the negative effects of volcano.
According to (http://www.odec.ca/projects/2007/bake7a2/volcanoeffects.htm) [1], these are some of the negative effects of volcano:
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Volcanic eruptions can cause earthquakes, fast floods, mud slides, and rock falls.
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Lava can travel very far and burn, bury, or damage anything in its path, including people, houses, and trees.
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The large amount of dust and ash can cause roofs to fall, makes it hard to breathe, and is normally very smelly.
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The ground around the volcano is not secure and can cause big earthquakes.
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A lot of scientists believe that really big volcanic eruptions can change weather around the world.
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Ash clouds sometimes float very high in the air for years, so sunlight cannot get to the earth, causing snow and frost in the summer in a lot of countries.
According to Sam McCormack [2], these are the negative effects of volcanoes
LAHARS
Lahars are formed where ice and snow on top of a volcanic cone melt when an eruption occurs. These lahars create mudflows, which can travel down the slopes of the volcanic cone into the surrounding region. This can have devastating effects for towns and villages.
Mount Pinatubo in the Philippines exploded in 1991. The eruption resulted in volcanic ash and rock fragments being deposited on the volcano’s slopes. Within hours, heavy rains began to wash this material down into the surrounding lowlands in giant, fastmoving lahars. Over the next four rainy seasons, lahars carried about half of the deposits off the volcano, causing even more destruction.
NUEE ARDENTES
These are clouds of hot ash and poisonous gases that are ejected from a volcano. They create what are sometimes called glowing avalanches. These clouds travel down the volcanic cone sides at huge speeds of up to 200km per hour and can travel great distances.
LOSS OF LIFE
The eruption of Mount Vesuvius in 79AD caused death and destruction. More than 20,000 people died and the towns of Pompeii and Herculaneum were destroyed.
DAMAGE TO PROPERTY
Lava from volcanoes can also burn everything in its path.
EFFECT ON THE ENVIRONMENT
Clouds of ash, dust and gas may reduce global temperatures by several degrees. This occurred in 1816 when the eruption of Tambora, near Indonesia, caused global summer temperatures to drop by 5 to 10°C. The emission of sulfur dioxide into the atmosphere may lead to acid rain. Other toxic, poisonous gases such as carbon monoxide and sulfur can also be harmful to humans. In addition, pyroclastic material ejected from a volcano can damage the environment. For example, if CO2 is emitted from a volcano it adds to the natural greenhouse effect. Sulfur dioxide causes environmental problems because it is converted to sulfuric acid in the stratosphere. This is a major cause of acid rain. The 1991 Mount Pinatubo eruption in the Philippines caused substantial environmental damage.
A study about negative effects of volcanoes is conducted by Sam McCormack [2].
On the morning of 18 May, 1980 at 8.32 am, an earthquake measuring 5.1 on the Richter scale occurred directly below the northern slope of Mount St Helens. This triggered a landslide, the largest in recorded history. It travelled at speeds of 175 to 250 km per hour. Most of Mount St Helens’ north side turned to rubble. Thousands of trees were destroyed and the water of Spirit Lake was temporarily displaced by this landslide. The eruption of Mount St Helens could be heard 1120 km away. The magma was exposed to lower pressure and this led to molten rock and steam exploding just a few moments after the landslide started.
The blasting of rock debr... (SOLVE THE CODE)
References:
[1] http://www.odec.ca/projects/2007/bake7a2/volcanoeffects.htm
[2] https://rocogeog.files.wordpress.com/2013/11/the-positive-and-negative-effects-of-volcanic-activity-by-sam-mccormack.pdf
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