john stevenson volcanoes and foss4g edinburgh
TRANSCRIPT
Reconstructing volcanic eruptions usingopen source GIS tools
John A Stevenson
School of GeoSciences, University of Edinburgh
QGIS Users Meeting - 5 May 2015
Blog: all-geo.org/volcan01010 Email: [email protected] 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
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The Hekla 3 and Hekla 4 eruptions
Comparision with Eyjafjallajökull 2010
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The Hekla 3 and Hekla 4 eruptions
Comparision with Eyjafjallajökull 2010
Blog: all-geo.org/volcan01010 Email: [email protected] Twitter: @volcan01010 4 / 15
The Hekla 3 and Hekla 4 eruptions
Comparision with Eyjafjallajökull 2010
Blog: all-geo.org/volcan01010 Email: [email protected] Twitter: @volcan01010 4 / 15
The Hekla 3 and Hekla 4 eruptions
Comparision with Eyjafjallajökull 2010
Blog: all-geo.org/volcan01010 Email: [email protected] Twitter: @volcan01010 4 / 15
The Hekla 3 and Hekla 4 eruptions
Deposits are found across Iceland
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The Hekla 3 and Hekla 4 eruptions
Hundreds of locations described and sampled
341 locations, 717 samples andobservations
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The Hekla 3 and Hekla 4 eruptions
Hundreds of locations described and sampled
341 locations, 717 samples andobservations
Blog: all-geo.org/volcan01010 Email: [email protected] Twitter: @volcan01010 6 / 15
Data input, cleaning and storage
gpsbabel and GpsPrune for georeferencing
Blog: all-geo.org/volcan01010 Email: [email protected] Twitter: @volcan01010 7 / 15
Data input, cleaning and storage
Plain text files and Git for raw data
Blog: all-geo.org/volcan01010 Email: [email protected] Twitter: @volcan01010 8 / 15
Data input, cleaning and storage
Python for calculations and data management
Blog: all-geo.org/volcan01010 Email: [email protected] Twitter: @volcan01010 9 / 15
Data input, cleaning and storage
Python for calculations and data management
Blog: all-geo.org/volcan01010 Email: [email protected] Twitter: @volcan01010 9 / 15
Data input, cleaning and storage
Python for calculations and data management
Blog: all-geo.org/volcan01010 Email: [email protected] Twitter: @volcan01010 9 / 15
Data input, cleaning and storage
Python for calculations and data management
Blog: all-geo.org/volcan01010 Email: [email protected] Twitter: @volcan01010 9 / 15
Data input, cleaning and storage
SQLite for storing processed data
Blog: all-geo.org/volcan01010 Email: [email protected] Twitter: @volcan01010 10 / 15
Analysis and visualisation
GRASS GIS for geospatial analysis
Blog: all-geo.org/volcan01010 Email: [email protected] Twitter: @volcan01010 11 / 15
Analysis and visualisation
GRASS GIS for geospatial analysis
Blog: all-geo.org/volcan01010 Email: [email protected] Twitter: @volcan01010 11 / 15
Analysis and visualisation
QGIS for data visualisation
OpenLayers pluginGeotag and import photos plugin (experimental)eVis event browser plugin
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Analysis and visualisation
QGIS for data visualisation
OpenLayers pluginGeotag and import photos plugin (experimental)eVis event browser plugin
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Analysis and visualisation
Volume of erupted material
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Analysis and visualisation
Volume of erupted material
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Analysis and visualisation
Database makes it easy to subdivide phases
Hekla 3 - Phase AHekla 3 - Phase BHekla 3 - Phase C
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Analysis and visualisation
Database makes it easy to subdivide phases
Hekla 3 - Phase AHekla 3 - Phase BHekla 3 - Phase C
Blog: all-geo.org/volcan01010 Email: [email protected] Twitter: @volcan01010 14 / 15
Analysis and visualisation
Database makes it easy to subdivide phases
Hekla 3 - Phase AHekla 3 - Phase BHekla 3 - Phase C
Blog: all-geo.org/volcan01010 Email: [email protected] Twitter: @volcan01010 14 / 15
Conclusions
Conclusions
By linking together simple open source tools, with Pythonas the glue, it becomes possible to undertake much morecomplicated analysis of spatial data.
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