The Nevado del Ruiz eruption of 1985 was one of the most destructive eruptions in history. Part of its aftermath was the largest lahar in geological history, bringing the fatality total to over 23,000 people.
Initially, the volcano began spewing large amounts of sulfur dioxide, which is extremely detrimental to humans. It causes violent coughing and wheezing shortly after being inhaled, and has a very strong, putrid smell. The main problem, however, was that sulfur dioxide can easily chemically react with various substances to form dangerous products, such as sulfuric acid.
The volcano then began to experience strong seismic activity, leading up to the eruption. After the eruption, the physical structure of the Nevado del Ruiz, (stratovolcano) led to the corroding of a nearby lake and the creation of a lahar. Measurments leading up to the eruption indicate that the pH level of the lake was around .2, meaning that the sulfur dioxide was already reacting with the lake water to form an acidic solution.
Lahars are syrupy in substance, in a liquid state while in motion and solid when stopped, very similar to concrete. The Nevado del Ruiz lahar became a worldwide phenomenon due to the death toll it created and the Omayra Sanchez incident.
The region was isolated. About 50 schools, 2 hospitals, 58 industrial plants and 343 commercial establishments were damaged or destroyed. The cost for the Colombian economy was an immense $ 7.7 billion, which was 20 percent of its GDP for 1985. Equivalent to the UK spending 450 billion on natural hazard.
No. The 1985 eruption of Nevado del Ruiz produced hot ash and pumice.
The eruption of Nevado del Ruiz was far worse. While the eruption of Mount St. Helens was far larger, its worst effects were limited to mostly unpopulated areas, and many of the people who did live in the immediate vicinity had been evacuated beforehand. In ally, 57 people died. The eruption of Nevado del Ruiz was relatively small, but the resulting mudflows killed more than 23,000 people.
Yes. Nevado Del Ruiz is a volcano known for its 1985 eruption which killed well over 20,000 people.
Chris chant
November the 13th 1985
I don't know Stratovolcano
I don't know Stratovolcano
July 2, 2012
No. It is impossible to prevent a volcanic eruption.
15000 animals were killed
The most destructive eruption of Nevado del Ruiz occurred on November 13, 1985. While relatively small, the eruption triggered mudflows that buried several towns. Worst hit was Armero, where 21,000 people died.
The eruption of 1985 produced gas and ash.