This repository contains a Leaflet.glify map (index.html) of shoreline change around the Pacific Rim. The user can click on a transect to view a plotly.js plot of change over time for that transect. The HTML and CSVs are hosted on GitHub Pages. It also contains code required to update data in New Zealand.
Installation: pip install -r requirements.txt
Everything in New Zealand was calculated by me (@neon-ninja) using CoastSat, everything outside New Zealand was calculated by @kvos and downloaded from this Zenodo link: https://zenodo.org/records/7758183. I used batch_process.py to automate CoastSat, as well as run multiple sites in parallel. This file uses a Google Earth Engine service account to download satellite imagery, to allow for automated processing. I used the NIWA Tide API for tidal corrections. See tidal_correction.ipynb for specifics.
New Zealand results were calculated on the wave.storm-surge.cloud.edu.au NeCTAR VM (32 CPUs, 128GB RAM). The total size of the data folder is 1.3TB. The .gitignore is used to only track the *.csv results within this data folder with git, everything else in the data folder is gitignored.
Additionally, I've configured a cron job:
# m h dom mon dow command
0 0 1 * * cd CoastSat && ./update.sh > update.logOn the above mentioned NeCTAR VM, which should, on the 1st of every month:
- Download any new Landsat satellite imagery
- Run CoastSat to classify these images, find the shorelines, and transect intersects
- Run tide correction
- Recalculate the linear trend
- Commit the new results to this repo