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Mt. Ontake: 27th September 2014 (KE) - Coggle Diagram
Mt. Ontake: 27th September 2014
(KE)
Lack of Warning Signs
there were no gas emissions to predict it would erupt
there were no changes in the volcano's shape
no magma movement
rated at a danger level of 1/5
Factors Leading to a High Death Toll
time
11:53 am
if people started hiking in the morning, they would reach the summit at noon
Saturday
many people would be on the mountain
27th September 2014
hiking season
many people would be on the mountain
difficulties in rescue
very steep-sided, so hard to move around quickly
2nd highest volcano in Japan
location
Mt. Ontake is sacred to the Shinto religion
lots of people hike there
many large cities are nearby (e.g. Tokyo), so a large population hikes there
on a destructive plate boundary
gas may build then erupt explosively
Short Term Effects
hydrogen sulfide slowed rescue attempts
the hakusai (sweet cabbage) crop was destroyed in 30/32 crops in the area
the ski slope opened late that year
most of the jobs are low skilled and low paid
Ryokan (inns) reported limited numbers of visitors and a downturn in business
the Kanko bus tour company refunded all their customers and had to re-route their tours
Long Term Effects
a new evacuation law was passed in July 2015
105 of 190 settlements have complied
new sensors have been added to Mt Ontake
the area around the volcano was closed for 4 years afterwards
the ash is nutrient-rich and will help crops grow in the future
the Japanese Meteorological Agency budget has risen to ¥62 billion
there is still a 1km exclusion zone around the summit's crater
the Nasu district has spent money on improving evacuation routes and emergency shelters