A spectacular stack on a ski slope in Canada has led to a University of Queensland researcher determining a simple modification that could improve skier safety on the snow.
UQ's Queensland Brain Institute researcher Dr Will Harrison studied visual perception under different lighting conditions to identify a better method for grooming ski runs.
Snow at ski resorts is compacted and smoothed in a process called grooming, which has been shown to reduce accidents.
Grooming results in a pattern of parallel lines in the snow, and researchers know a lot about how the brain processes these patterns.
I was interested to test if the particular groom pattern at the ski resort I was skiing at made it more difficult to see the snow.
After analyzing the sensitivity of central vision under different lighting conditions, I found on overcast days the ability to see the standard grooming pattern was severely reduced.
This is due to the lack of contrast which makes it difficult for the brain to process narrowly-spaced lines."
Dr Will Harrison, UQ's Queensland Brain Institute
Dr Harrison then investigated alternate grooming patterns that could counteract the issue and potentially improve snow sport safety.
By using computer modeling, he was able to predict how well the brain could process groomed snow at the standard viewing distance of 10 meters.
"I determined a combination of differently sized groom patterns would possibly improve visibility, and therefore safety, of groomed snow in cloudy conditions," he said.
"I've shown a minor modification to the grooming pattern could improve safety in theory, now I'm keen to work with engineers to trial it."
Harrison, W.J. (2019) The (In)visibility of Groomed Ski Runs. i-Perception. doi.org/10.1177/204166951984289.