Damage Proxy Maps¶
Damage Proxy Maps based on Coherence Change Detection
This module provides a fully-automated workflow for the creation of Damage Proxy Maps based on the method of Coherent Change Detection (CCD) with Sentinel-1 SLC data as described by Tay et al. 2020.
The output data files consist of the Damage Proxy Map as GeoTiff (dmp_…tif) and KMZ (dmp_…kmz) file, as well as the raw CCD values in GeoTiff (CCD_…tif) and GeoJSON (CCD_…geojson) format.
The files are found within a newly created folder. The folder name is based on the name of your AOI and the event date.
m16 instance (16 CPU and 64 GB RAM)
50 GB of free disk space
The two steps of the process are explained in the following section:
Select an AOI¶
Using the provided AOI selector, select an AOI of your choice between the different methods available in the tool. We provide 3 administration descriptions (from level 0 to 2) and 3 custom shapes (drawn directly on the map or ogr compatible files).
Disaster event date: Pick the date where the disaster event happened.
copernicus credentials: Provide your scihub credentials for search and download of the relevant Sentinel-1 scenes. If you do not have an account, go to Copernicus Scihub and register.
Clicking this button will trigger the full workflow. Some of the steps may take a while (e.g. download, processing), so be patient. If you suffer from an instable internet connection, make sure to set the minimum runtime of your instance to 2 hours. Otherwise make sure to keep the connection to the SEPAL website (i.e. do not close browser or browser tab).
If the processing did not finish, you can re-run the module with the same parameters, and the processing will continue from where it stopped.
Once the computation is finished the result files will be stored in the
module_results/Damage_proxy_map/<aoi name>_<event date>/ folder.