The approach is described in detail in the following publications;
- Data driven approach to derive image end-members for linear spectral unmixing: https://doi.org/10.1016/j.jag.2020.102252
- Time series analysis of coastline changes in response to migrating mudbanks (submitted 07-2021)
The coastline position estimates for Suriname are available through the Google Earth Engine (GEE) code editor via: https://code.earthengine.google.com/?accept_repo=users/jobdevries90/MangroMud
.
├── .gitignore
├── CITATION.md
├── LICENSE.md
├── README.md
├── requirements.txt
├── data
│ ├── processed
│ ├── raw
├── results
│ ├── GIF
│ ├── methodology_figures
│ ├── temp_maps
│ ├── Validation
└── src
In order to create coastline position estimates and quantify annual changes with respect to alongshore migrating mudbanks the following steps are required.
- Separate land and water by applying Otsu thresholding approach in GEE
- Define image end-members for the purpose of linear spectral unmixing (LSU) in GEE
- Intersection of the shorelines with pre-defined shore-normal transects in GEE
- Extract mud abundance estimates from the LSU for each transect from GEE
- post-process the estimated coastline postions in R
- post-process mud abundances for estimating the pressence or absence of mudbanks in R
steps 1 - 4 are explained in the GEE repository. The data in data/raw/GEE_exports shows the results for Suriname. In step 5 - 6 this data is used for post-processing.
The result is visualized for Suriname in the GEE repository
This project is licensed under the terms of the MIT License