1 of 8

TEPHRA2

2 of 8

OUTPUTS

HAZARD ASSESMENT

INPUTS

The model outputs the mass per unit area of tephra on the ground and the wt percent of each grain size at each of the supplied locations.

Tephra sedimentation models are used to forecast the accumulation of ejected volcanic material across a region. We need tephra fallout models that we can trust in order to make reliable forecasts crucial to hazard assessment.

Inputs to the model include eruption parameters, particle parameters, atmospheric parameters, and grid parameters.

3 of 8

TEPHRA MODELING

We need tephra fallout models that we can trust in order to make reliable forecasts crucial to hazard assessment.

4 of 8

THIS LAB WILL USE:

MASS ERUPTED

5 of 8

6 of 8

7 of 8

For each step up the eruption column (i), from the vent to the maximum column height (H), each grain size (j) is considered:

8 of 8

Instructions: Running Tephra2 on VICTOR for the first time

Video tutorial: https://tinyurl.com/Tephra2Tutorial

​

  1. Login to VICTOR at hub.victorproject.org
  2. Open a Terminal window, type ’victor setup’ and choose Tephra2
  3. Go to the tephra2 folder, and open the Jupyter Notebook tephra2.ipynb
  4. Change the vent location to as needed
  5. Go through the steps of the notebook to the end and run each cell