4 ms·
I wonder, if a road lasted for seventy years, and then became unusable because of changes within ten, one could say that it's not within the "normal" variation
by Gravityloss 10y ago
I wonder, if a road lasted for seventy years, and then became unusable because of changes within ten, one could say that it's not within the "normal" variation anymore?
Probably someone has an article that is a lot more exact and involves a lot more statistics...
- maxerickson 10y agoWe don't have a clear picture of normal. This page has some graphs of ground temps the last 100 years: http://www.pmel.noaa.gov/arctic-zone/detect/land-permafrost.shtml http://www.pmel.noaa.gov/arctic-zone/detect/land-permafrost.... They are for areas north of the highway, but it shows temps in 1950 higher than they are today. The text also mentions that the ground has cooled slightly in the recent 20 years.