nevada del ruiz response by gregory devenney 10aa
TRANSCRIPT
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Nevada del Ruiz response
By Gregory Devenney 10AA
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About Amero before the eruption
• Colombia has a GNP of $4,850 per capita
• America has a GNP of $21,100 per capita
• Colombia is one of the most dangerous countries in the world
• Nevada del Ruiz is the northern most historically active volcano in South America
• Nevada del Ruiz is in Columbia, South America
• Before the explosion, the Nevada del Ruiz showed signs of emitting gas and steam
• The Nevada del Ruiz had caused major mudflows in the past
• The Nevada del Ruiz is a volcano created as a result of collisions between the Nazca plate and the South America Plate
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• The hazard zone map produced before the eruption was inadequate
• Nevada del Ruiz rises 5200km above sea level
• The town of Amero was approximately 45km from the Ruiz summit
• Many of the people living in the Amero region are employed in agriculture
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The impact of the eruption
• Magma rose upwards inside the Ruiz summit
• As the peak became warmer, snow and ice melted, causing a series of minor mudflows
• On the 13th November 1985 the Nevada del Ruiz erupted
• When the Ruiz erupted there wasn’t a team of mobile volcanologists that could rush to the scene in such an emergency
• Melted water, snow and ice ran down the mountainside and into the river Lagunillas
• The Lagunillas river flooded
• As the snow and ice melted, ash from previous eruptions was turned into mud
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• 30 metre high and travelling at 80km per hour the mudflow descended down the mountain towards the town of Amero
• The mudflow struck at 11pm
• Survivors claim that the first rush of muddy water was ice cold, but as it flowed it became increasingly warm
• By morning a layer of mud, up to 8m thick covered Armero and the surrounding areas
• Following the mudslide many people were trapped in the mud, water and debris that was left behind. Many later died.
• Because of the ash deposited by volcanic eruptions, the soil around Armero region is very fertile.
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How people tried to make sure this never happens again
• Following the 1985 eruption`Volcano Disaster Assistance Program` (VDAP) was set up.
• The VDAP aims to reduce the number of fatalities caused by volcanic eruptions in developing countries and limiting the economic loss.
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Some pictures and maps of Nevada del Ruiz and Armero
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And some pictures just of volcanoes and the damage they can do
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Thank you for watching my presentation
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Mr Manson says . . .
• Some good work and presentation Gregory – good facts and information but maybe you could incorporate the pictures and words together a bit more
• A v good piece of work well done
• A2