TError is a Matlab package designed to quantify the uncertainty of eruption source parameters calculated from tephra deposits. Inputs of the code are a range of field-based, model-based and empirical parameters (i.e., clast diameter, crosswind and downwind ranges, thickness measurement, area of isopach contours, bulk deposit density, empirical constants and wind speed).
TError is a contraction of Tephra and Error. Any bad joke is not intentional.
The repository contains the following files:
| File | Description |
|---|---|
TError_sensitivity.m |
Systematic sensitivity analysis mode of TError |
TError_propagation.m |
Stochastic error propagation mode of TError |
TError.pdf |
User manual |
LICENSE.md |
License associated with the code |
README.md |
This file |
isopach_example.txt |
Example of a file containing isopach infomation |
dep/ |
Dependencies to the code |
For both TError_sensitivity.m and TError_propagation.m, edit the header of the files and run the script in Matlab.
Upon completion, a folder named OUTPUT containing sub-folders named after the run name are created.
Instructions are provided in the the user manual TError.pdf. Updates are presented here.
Please cite TError as:
Biass, S., Bagheri, G., Aeberhard, W., Bonadonna, C., 2014. TError: towards a better quantification of the uncertainty propagated during the characterization of tephra deposits. Stat. Volcanol. 1, 1–27. https://doi.org/10.5038/2163-338X.1.2
Biass S, Bagheri G, Aeberhard W, Bonadonna C, 2014. TError v1.0. doi:10.5281/zenodo.3590703
GBF is a free and open source software releaser under GPL 3. See the documentation or the file LICENSE.md for further information.
The method to estimate the plume height from the method of Carey and Sparks (1986) can be found in this code and documented here.
Volume calculations can be found in this code and documented here.
This script uses Matlab dependencies nhist.m and linspecer.m by Jonathan C Lansey. The calculation of the mass eruption rate with the method of Degruyter and Bonadonna (2012) is made possible with the script found in:
Degruyter, W., Bonadonna, C., 2012. Improving on mass flow rate estimates of volcanic eruptions. Geophys Res Lett 39. https://doi.org/10.1029/2012GL052566