Geospatial Modeling
Brendan Harmon
Paradigms of Science
- Empirical
- Theoretical
- Computational
- Data
Geospatial Modeling & Analysis
- Geomorphometry
- Ecology
- Etc…
Geospatial Simulation
- Urbanization
- Hydrology
- Ecological corridors
- Etc…
Geomorphometry
Quantitative analysis of the earth’s surface
Lidar
Location: New Orleans, Louisiana
Dataset: U.S. Army Corps of Engineers 2012 Lidar Survey of New Orleans
Software: GRASS GIS, Rhino, RhinoTerrain, & Thea Render
Laser Scanning
Location: LSU Art & Design Quad, Baton Rouge, LA
Author: Brendan Harmon et al.
System: Faro Focus Laser Scanner
Software: CloudCompare
Drone Photogrammetry
Location: Lake Wheeler, Raleigh, NC
Author: Justyna Jeziorska, NCSU GeoForAll Lab
System: UX5 Drone
Software: Metashape
Digital Elevation Model
Slope
Geomorphons
Geomorphons
Geomorphons: Ridges
Topographic Convergence
Topographic Convergence: Ridges
Ecological Analytics
Multispectral Drone Photogrammetry
Location: Hilltop Arboretum, Baton Rouge, LA
Author: Brendan Harmon
System: FireFLY Pro with Micasense RedEdge
Software: Metashape, GRASS GIS, Python
Coastal Tallgrass Prairie Ecosystem
Aerial Survey
2020-03-19
2020-04-25
2020-06-01
2020-06-30
2020-08-03
2020-08-29
2020-09-27
2020-10-25
2021-01-24
Biomass 2020
Volume 2020-2021
Carbon 2020
- Aboveground carbon stock: 2,900 $kgC$
- Belowground carbon stock: 29,820 $kgC$
- Carbon stock: 32,721 $kgC$
- Carbon pool: 7,047 $gC/m^{2}$
Research Questions
- What is the carbon pool of the meadow?
- How will the carbon pool change as the meadow matures?
- Can designed meadows be effective stores of carbon?
- How can drone data analytics inform management?
Urban Growth Simulation
FUTURES
The FUTure Urban-Regional Environment Simulation (FUTURES) is regional scale model for simulating the conversion of rural to urban land based on a potential submodel, per capita demand submodel, and a patch growing algorithm.
FUTURES
| Submodel | Predictors |
|---|---|
| Development pressure | Protected areas |
| Slope | |
| Roads | |
| Water | |
| Forest | |
| City center | |
| Demand | Population statistics |
| Patch growing algorithm | Historic urbanization |
FUTURES
- Where is growth happening?
- Where is growth predicted?
- How should we rethink development?
Hydrological Simulation
SIMWE
The Simulation of Water Erosion (SIMWE) simulates shallow flows of water and sediment over landscapes.
Shallow Water Flow Discharge
$$(m^3/s)$$
Normalized Difference Vegetation Index (NDVI)
Shallow Water Flow Discharge with Landcover from NDVI
$$(m^3/s)$$
Ecological Corridor Simulation
LSCorridors
Spatial Ecology and Conservation Lab (LEEC), Sao Paulo State University
LandScape Corridors (LSCorridors) simulates multiple functional ecological corridors based on species movement and landscape connectivity. https://doi.org/10.1111/2041-210X.12750
Giant Panda Habitat Corridors
Location: Sichuan, China
Team: Andrew Wright, Tanvi Shah, & Brendan Harmon
Software: GRASS GIS & LSCorridors
Research Question: What land needs to be protected to ensure the long-term survival of Giant Pandas?
Software
| Program | Applications | Open Source |
|---|---|---|
| QGIS | GIS | ✔ |
| GRASS GIS | GIS & remote sensing | ✔ |
| SAGA GIS | GIS | ✔ |
| ArcGIS | GIS | |
| TerrSet | GIS & remote sensing | |
| ERDAS Imagine | remote sensing | |
| Metashape | photogrammetry | |
| Pix4D | photogrammetry | |
| Google Earth | virtual globe | |
| Leaflet | web mapping | ✔ |
| Mapbox | web mapping |
Generative Design
Integrate geospatial modeling into the design process with Grasshopper
- Terrain modeling & grading with Docofossor
- Terrain modeling with Bison
- Terrain modeling with RhinoTerrain
- Vector mapping with Mosquito
Docofossor
RhinoTerrain
Learn More
- Geospatial Modeling and Analysis, Helena Mitasova, NCSU
- GIS for Designers, Brendan Harmon, LSU
- QGIS for Hydrological Applications, Hans van der Kwast, IHE Delft