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Reconstructing volcanic eruptions using
open source GIS tools
John A Stevenson
School of GeoSciences, University of Edinburgh
QGIS Users Meeting - 5 May 2015
Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 1 / 15
Outline
1 The Hekla 3 and Hekla 4 eruptions
2 Data input, cleaning and storage
3 Analysis and visualisation
4 Conclusions
Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 3 / 15
The Hekla 3 and Hekla 4 eruptions
Comparision with Eyjafjallajökull 2010
Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 4 / 15
The Hekla 3 and Hekla 4 eruptions
Comparision with Eyjafjallajökull 2010
Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 4 / 15
The Hekla 3 and Hekla 4 eruptions
Comparision with Eyjafjallajökull 2010
Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 4 / 15
The Hekla 3 and Hekla 4 eruptions
Comparision with Eyjafjallajökull 2010
Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 4 / 15
The Hekla 3 and Hekla 4 eruptions
Deposits are found across Iceland
Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 5 / 15
The Hekla 3 and Hekla 4 eruptions
Hundreds of locations described and sampled
341 locations, 717 samples and
observations
Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 6 / 15
The Hekla 3 and Hekla 4 eruptions
Hundreds of locations described and sampled
341 locations, 717 samples and
observations
Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 6 / 15
Data input, cleaning and storage
gpsbabel and GpsPrune for georeferencing
Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 7 / 15
Data input, cleaning and storage
Plain text files and Git for raw data
Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 8 / 15
Data input, cleaning and storage
Python for calculations and data management
Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 9 / 15
Data input, cleaning and storage
Python for calculations and data management
Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 9 / 15
Data input, cleaning and storage
Python for calculations and data management
Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 9 / 15
Data input, cleaning and storage
Python for calculations and data management
Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 9 / 15
Data input, cleaning and storage
SQLite for storing processed data
Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 10 / 15
Analysis and visualisation
GRASS GIS for geospatial analysis
Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 11 / 15
Analysis and visualisation
GRASS GIS for geospatial analysis
Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 11 / 15
Analysis and visualisation
QGIS for data visualisation
OpenLayers plugin
Geotag and import photos plugin (experimental)
eVis event browser plugin
Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 12 / 15
Analysis and visualisation
QGIS for data visualisation
OpenLayers plugin
Geotag and import photos plugin (experimental)
eVis event browser plugin
Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 12 / 15
Analysis and visualisation
Volume of erupted material
Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 13 / 15
Analysis and visualisation
Volume of erupted material
Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 13 / 15
Analysis and visualisation
Database makes it easy to subdivide phases
Hekla 3 - Phase A
Hekla 3 - Phase B
Hekla 3 - Phase C
Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 14 / 15
Analysis and visualisation
Database makes it easy to subdivide phases
Hekla 3 - Phase A
Hekla 3 - Phase B
Hekla 3 - Phase C
Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 14 / 15
Analysis and visualisation
Database makes it easy to subdivide phases
Hekla 3 - Phase A
Hekla 3 - Phase B
Hekla 3 - Phase C
Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 14 / 15
Conclusions
Conclusions
By linking together simple open source tools, with Python
as the glue, it becomes possible to undertake much more
complicated analysis of spatial data.
Advert:
I will be available from the end of September for:
analysis
training
advice
Visit the blog for more tips including All the software...
Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 15 / 15

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John Stevenson Volcanoes and FOSS4G Edinburgh

  • 1. Reconstructing volcanic eruptions using open source GIS tools John A Stevenson School of GeoSciences, University of Edinburgh QGIS Users Meeting - 5 May 2015 Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 1 / 15
  • 2.
  • 3. Outline 1 The Hekla 3 and Hekla 4 eruptions 2 Data input, cleaning and storage 3 Analysis and visualisation 4 Conclusions Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 3 / 15
  • 4. The Hekla 3 and Hekla 4 eruptions Comparision with Eyjafjallajökull 2010 Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 4 / 15
  • 5. The Hekla 3 and Hekla 4 eruptions Comparision with Eyjafjallajökull 2010 Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 4 / 15
  • 6. The Hekla 3 and Hekla 4 eruptions Comparision with Eyjafjallajökull 2010 Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 4 / 15
  • 7. The Hekla 3 and Hekla 4 eruptions Comparision with Eyjafjallajökull 2010 Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 4 / 15
  • 8. The Hekla 3 and Hekla 4 eruptions Deposits are found across Iceland Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 5 / 15
  • 9. The Hekla 3 and Hekla 4 eruptions Hundreds of locations described and sampled 341 locations, 717 samples and observations Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 6 / 15
  • 10. The Hekla 3 and Hekla 4 eruptions Hundreds of locations described and sampled 341 locations, 717 samples and observations Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 6 / 15
  • 11. Data input, cleaning and storage gpsbabel and GpsPrune for georeferencing Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 7 / 15
  • 12. Data input, cleaning and storage Plain text files and Git for raw data Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 8 / 15
  • 13. Data input, cleaning and storage Python for calculations and data management Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 9 / 15
  • 14. Data input, cleaning and storage Python for calculations and data management Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 9 / 15
  • 15. Data input, cleaning and storage Python for calculations and data management Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 9 / 15
  • 16. Data input, cleaning and storage Python for calculations and data management Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 9 / 15
  • 17. Data input, cleaning and storage SQLite for storing processed data Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 10 / 15
  • 18. Analysis and visualisation GRASS GIS for geospatial analysis Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 11 / 15
  • 19. Analysis and visualisation GRASS GIS for geospatial analysis Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 11 / 15
  • 20. Analysis and visualisation QGIS for data visualisation OpenLayers plugin Geotag and import photos plugin (experimental) eVis event browser plugin Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 12 / 15
  • 21. Analysis and visualisation QGIS for data visualisation OpenLayers plugin Geotag and import photos plugin (experimental) eVis event browser plugin Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 12 / 15
  • 22. Analysis and visualisation Volume of erupted material Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 13 / 15
  • 23. Analysis and visualisation Volume of erupted material Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 13 / 15
  • 24. Analysis and visualisation Database makes it easy to subdivide phases Hekla 3 - Phase A Hekla 3 - Phase B Hekla 3 - Phase C Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 14 / 15
  • 25. Analysis and visualisation Database makes it easy to subdivide phases Hekla 3 - Phase A Hekla 3 - Phase B Hekla 3 - Phase C Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 14 / 15
  • 26. Analysis and visualisation Database makes it easy to subdivide phases Hekla 3 - Phase A Hekla 3 - Phase B Hekla 3 - Phase C Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 14 / 15
  • 27. Conclusions Conclusions By linking together simple open source tools, with Python as the glue, it becomes possible to undertake much more complicated analysis of spatial data. Advert: I will be available from the end of September for: analysis training advice Visit the blog for more tips including All the software... Blog: all-geo.org/volcan01010 Email: john.stevenson@ed.ac.uk Twitter: @volcan01010 15 / 15