Nevado Del Ruiz case study

what kind of volcano is Nevado Del Ruiz

stratovolcano

How many people died

23 thousand

what created the ashy mud

the explosion melting and fusing with the snow around the crater

how high is the crater

5 389 metres high

when did the disaster take place

13th November 1985 at 3:06 pm

by what time was everything in Armero covered in the mud

9:09 pm

How much of the snow melted

5-10%

How fast did the snow travel

50 km/h or around 25miles/h

what surface area did the mud cover

20 miles²

how far from the crater is Armero

30 miles east

how many people were left homeless

10 thousand

why couldn’t they drink the water for a while

the acidity, lead sulfates and iron were too high

what were the impacts on the cattle

1 thousand dead,

35 thousand left with stress, weight loss, decreased milk production, gastric problems from the volcanic ash

how much of Colombia’s rice supply was around Nevado Del Ruiz

20%

why was so much of Colomia’s crops from around this volcano

the soil from the volcano is rich in nutrients

what was the only way of rescuing people

by air

how long did it take for foriegn help to arrive

3 days

what slowed the rescue attempt

heavy rain after the erruption