Four videos and associated Hydrus model files document capillary rise experiments in snow and sand mixtures. The data captures the 2D evolution of water flow optical density over time. Experiments were conducted at the Paul Scherrer Institute in Switzerland and published by ENVIDAT in 2025.
Use Cases
- Calibrating Mualem-van Genuchten model parameters using the provided Hydrus inverse fitting files.
- Analyzing the temporal evolution of unitless optical density from the 2D video data to understand water front progression.
- Comparing capillary rise dynamics in different porous media columns (sand/snow vs. sand/gravel/snow) shown in the videos.
- Validating numerical simulations of unsaturated flow in snow using the experimental video observations.
Strengths
- Includes 4 experimental videos providing visual 2D data on water flow.
- Contains specific Hydrus model files for direct parameter fitting of a standard hydraulic model.
Limitations
- Small experimental scope with only 4 video records.
- Unknown sample size, row count, and specific data dimensions for quantitative analysis.
- Geographic bias as all experiments were conducted at a single institute in Switzerland.
Provenance
- Source
- Paul Scherrer Institute (PSI), Villigen, Switzerland.
- Collection Method
- Capillary rise experiments observed via neutron radiography, with inverse modeling performed using Hydrus.
- Time Range
- null
- Freshness
- null
- Geography
- Villigen, Switzerland.