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Multi-decadal coastline dynamics controlled by migrating sub-tidal mudbanks

GitHub release

Description

The approach is described in detail in the following publications;

  1. Data driven approach to derive image end-members for linear spectral unmixing: https://doi.org/10.1016/j.jag.2020.102252
  2. 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

Project organization

.
├── .gitignore
├── CITATION.md
├── LICENSE.md
├── README.md
├── requirements.txt
├── data               
│   ├── processed      
│   ├── raw
├── results
│	├── GIF
│	├── methodology_figures
│	├── temp_maps
│	├── Validation
└── src

usage

In order to create coastline position estimates and quantify annual changes with respect to alongshore migrating mudbanks the following steps are required.

  1. Separate land and water by applying Otsu thresholding approach in GEE
  2. Define image end-members for the purpose of linear spectral unmixing (LSU) in GEE
  3. Intersection of the shorelines with pre-defined shore-normal transects in GEE
  4. Extract mud abundance estimates from the LSU for each transect from GEE
  5. post-process the estimated coastline postions in R
  6. 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

License

This project is licensed under the terms of the MIT License

Citation

Please cite this project as described here.

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