AvaFrame Web UI

Project Directory

Set the path to your AvaFrame project directory. This directory should contain (or will contain) the standard AvaFrame folder structure.

Module Configuration

View and modify configuration parameters for each AvaFrame module. Changes can be saved as local override files in your project directory.

Unified Pipeline

End-to-end avalanche hazard assessment: DEM acquisition, snow climatology, release area generation, com1DFA simulation, and interactive dashboard.

General Config

AvaFrame Config

YAML (Advanced)

Project

name

Project name (used for titles and directory naming)

dir

Output directory — will contain Inputs/, Outputs/, Work/

Domain

mode

How to define the study area

center_lat

Center latitude (WGS84 decimal degrees)

center_lon

Center longitude (WGS84 decimal degrees)

buffer_m

Half-width of domain in meters (total domain = 2x buffer)

target_epsg

Target CRS (auto-detected from centroid if left empty)

DEM

source

DEM data source

target_res_m

Target resolution in meters (DEM will be resampled)

Snow / Release Thickness

source

How to determine release thickness (d0)

thickness_m

Release thickness in meters (normal to slope). Typical: 0.5-2.0 m

Release Areas

slope_min_deg

Minimum slope for release zones (Swiss standard: 28 deg)

slope_max_deg

Maximum slope (steeper slopes don't accumulate snow, standard: 60 deg)

min_area_m2

Minimum release area polygon size

simplify_tolerance_m

Polygon simplification tolerance (reduces vertices)

erode_cells

DEM edge erosion in cells (prevents polygons touching nodata)

KML Overlays (Optional)

upload

Upload KML files to overlay on the dashboard (master plans, infrastructure, paths, etc.)

Drop KML files here or click to browse

Simulation Model

model

Simulation model to use

alpha

Angle of reach [deg]. Lower = longer runout. Typical: 20-30 for avalanches

exp

Spreading exponent. Higher = less lateral spreading

friction_model

Friction model for dense flow simulation

mesh_cell_size_m

Computational mesh resolution (should match or be >= DEM resolution)

t_end_s

Maximum simulation time in seconds

delta_th_m

Release thickness per particle layer [m]. Higher = fewer particles = faster. Default 0.25

snow_density

Snow density in kg/m3 (typical: 200-300)

res_type

Output result types (ppr=pressure, pft=flow thickness, pfv=velocity)

Dashboard Output

generate

Generate interactive Leaflet dashboard after simulation

title

Dashboard title (auto-generated from project name if empty)

downsample

Downsample factor for overlay PNGs (2 = half resolution, smaller file)

Raw YAML Config

Domain → DEM → Snow → Release Areas → Simulation → Dashboard

Select Workflow

Choose a simulation workflow to run. Make sure your project is set up with the required input files.

Simulation Results

Browse output files from your simulation runs. Click on image files to preview them.

Documentation

Project Setup

Running Simulations

Configuration

Understanding Results

Module Reference

About AvaFrame

AvaFrame (The Open Avalanche Framework) is an open-source collection of tools for avalanche simulation, analysis, and hazard mapping.

Modules

com1DFA - Dense Flow Avalanche: SPH-based particle simulation for detailed avalanche dynamics
com2AB - Alpha-Beta Model: Statistical runout prediction from path profile
com3Hybrid - Hybrid Model: Combines com1DFA and com2AB iteratively
com4FlowPy - Flow-Py: Rapid flow path propagation for hazard screening
com5SnowSlide - Snow Slide: Small slide simulation with cohesion
com6RockAvalanche - Rock Avalanche: Rock avalanche dynamics (experimental)
ana3AIMEC - AIMEC: Automated model evaluation and comparison
ana4Stats - Probabilistic Analysis: Parameter variation and probability maps

Links

This Web UI

This interface provides a user-friendly way to configure and run AvaFrame simulations without writing Python code. It connects to your locally installed AvaFrame package.