New tools for LiDAR, forestry, river management and hydro...
Transcript of New tools for LiDAR, forestry, river management and hydro...
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New tools for LiDAR, forestry, river management and
hydro-geomorphology with JGrassTools in gvSIGFranceschi Silvia & Antonello Andrea
gvSIG Festival – May 2016
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WHO AM I?
● environmental engineer specialized in hydrology, hydraulics and geomorphology
● co-founder of HydroloGIS member of gvSIG association
● developed scientific models contained in the JGrassTools library in the field of:
– hydrology– hydraulics– forestry
● PhD student of Science and Technology at the Free University of Bolzano (Italy)
● OSGeo Charter Member
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An open geospatial library focused on hydro-geomorphological analysis and environmental modeling in general.
THE JGRASSTOOLS LIBRARY
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JGrasstools inside gvSIG:
Modules Parameters
Experimental!
Debug mode
Set maximum memory
THE JGRASSTOOLS SPATIAL TOOLBOX
Modules List
Running options
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droloGIS S.r.l. - Via Siemens, 19 - 39100 Bolzano ydrologis.com
drainage direction, total contributing area, network and watershed extraction, rescaled distances and hydrologic attributes, slope, curvatures, hydrologic indexes and geomorphologic attributes
THE HORTONMACHINE: hydro-geomorphology
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Interpolation of meteorological data with Kriging (rainfall and temperature) and Jami (temperature, pressure, humidity and wind)
THE HORTONMACHINE: statistics
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Evaluation of the maximum discharge for a given precipitation (works also with statistical information rainfall Intensity-Duration Curves)
THE HORTONMACHINE: hydro-geomorphology
Peakflow
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Simplified 1D hydraulic model:-based on Saint Venant equations-GIS based: input and output are GIS layers- calculates the water depth and velocity for each section- can handle lateral contributes: inflow and outtakes
Data preparation for the Hecras hydraulic software for channels.
THE HORTONMACHINE: hydro-geomorphology
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Evaluation of the hillslope stability: Shalstab
Stability condition for the given precipitation
Critical rainfall
THE HORTONMACHINE: hydro-geomorphology
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DebrisFlow: triggering, propagation in network and final propagation on the fan
simulated area
THE HORTONMACHINE: hydro-geomorphology
area interested by the event
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RASTER & VECTOR TOOLS
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Extraction of shapefile profiles over the elevation model
RASTER & VECTOR TOOLS
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Via Siemens, 19 - 39100 Bolzano www.hydrologis.com
Modelling of artifacts in the elevation model
Bob the Builder
RASTER & VECTOR TOOLS
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ia Siemens, 19 - 39100 Bolzano www.hydrologis.com
adding some erosion
Bob the builder result
RASTER & VECTOR TOOLS
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Prepare data and evaluate data from/to Geopaparazzi*
* http://www.geopaparazzi.eu
MOBILE
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Developed in collaboration with the Free University of Bolzano. The toolbox is initially mainly dedicated to forestry analysis.
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Adaptive TIN, generation of DTM from LiDAR datasets
L.E.S.T.O.
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Extraction of buldings from LiDAR datasets
L.E.S.T.O.
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Vegetation: individual tree crown approaches are followed, aimed to detect position and main characteristics of each single tree.
Modules that work both onraster and point clouds
L.E.S.T.O.
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ens, 19 - 39100 Bolzano www.hydrologis.com
Developed during the Google Summer of Code 2014.
- GIS-based tool for predicting the magnitude of LW transport during flood events at any given section within a river basin (Lucía et al, 2014)
- two main processes related to wood debris:* LW recruitment from hillslopes* LW transport/propagation along the network
LARGE WOOD CONTRIBUTION DURING FLOODS
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Critical sections for LW are usually bridges or dams
LARGE WOOD CONTRIBUTION DURING FLOODS
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Homepage: http://www.jgrasstools.org
Need help? Join the Mailinglist. http://groups.google.com/group/jgrasstools
Useful links: http://jgrasstechtips.blogspot.it
http://www.slideshare.net/search/slideshow?q=jgrasstools
THANKS FOR THE ATTENTION!
Franceschi [email protected]