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.

Warning

Minimum requirements:

  • 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).

https://raw.githubusercontent.com/BuddyVolly/damage_proxy_maps/main/doc/img/aoi_select.png

aoi selector

Pameters

  • 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).

Note

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.

https://raw.githubusercontent.com/BuddyVolly/damage_proxy_maps/main/doc/img/complete.png