Wednesday, October 16, 2013

Mass Wastage Case Study


Ancash. Yungay, Peru, 31 May 1970


Description: Ancash avalanche, also known as the Great Peruvian Earthquake occurred on May 31, 1970. The center (or epicenter) of the earthquake was 35 km off the coast of Casma and Chimbote. An estimate of 20,000 casualties are reported. The avalanche occurred due to the walls of the mountain becoming compromised from the earthquake, it sent sheets of snow, rock and glacial ice (3,000 feet (910 m) wide and one mile (1.6 km) long) It moved about 11 km into the city of Yungay.

Impact: The disaster claimed 20,000 lives but could have been an upwards of 70,000 as well as a substantial amount of damage. It completely buried the town of Yungay and Ranrahirca.

Personal response:  I think that they could have predicted the earthquake due to today’s seismology technology, but the avalanche managed to break down an entire mountain, which was a horrible event that I don’t think could have been stopped or predicted. In 1960 Vlado Kapetinovic wrote a paper regarding the events of a gigantic avalanche from Huascaran. He basically predicted the arrival of the Ancash landslide, nearly 10 years prior to the disaster so I think with that bit of knowledge or suspicion if you will, that someone could have made an educated guess from the clues that corresponded with Vlados hypothesis. 

Diagram: Will be posted shortly.

Media:  YUNGAY AVALANCHE EARTHQUAKE YUNGAY ALUVION 31 MAYO 1970 ANCASH PERU PARTE 01

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