Data reliability study: avalanche size estimates and outlines

This dataset contains the data used and collected to investigate the reliability of avalanche size estimates and avalanche outlines (see related publications). Namely this is

Avalanche size estimates

• the 10 pictures depicting avalanches
• the survey results from the 170 participants

Avalanche outlines mapped from oblique photographs
* the pictures of the six avalanches * the avalanche outlines mapped by the 10 participants * the reference mapped from the georeferenced photographs

Avalanche outlines from remotely-sensed imagery
* the orthophotos in the four different resolutions (2m, 1m, 50cm, 25cm) * the area of interest (AoI) delimiting the research area * the avalanche mappings in each resolution for all five participants * the shade masks used to separate illuminated and shaded areas

The acquisition of the orthophotos has been partially supported by the Swiss National Science Foundation (SNF; Grant N°200021_172800).