The purpose of the script is to check the bathymetry at a station in preparation of a CTD cast. The main concern is that the CTD might drift upgradient, into the topography, and hit the bottom. Knowing the bathymetry a priori helps avoiding such issue, and can help
- informing the bridge about what direction to drift (the resolution of the bathymetry used here is often higher than the one of the nautical charts available onboard);
- deciding whether to stop the cast slightly before (e.g. 15m from the bottom);
- deciding whether to ask the winch to recover the package faster than usual (e.g. 75 mpm rather than the standard 60 mpm);
This script returns a latitude vs longitude contour plot of the bathymetry around a station specified by the user. It also plots the station position and a half-mile radius around the station, which is usually how much the ship will drift during a deep (~4000 m) station.
Usage is allowed under the MIT licence. We encourage usage and welcome feature requests. It is appreciated if visible credit is given by any projects using the GO-SHIP-Oceanography code.
To install, clone the repository, navigate to station_bathymetry, and run:
python3 -m pip install .
It is recommended to use a virtual environment.
The plotting tool takes the form of a jupyter notebook plot_bathymetry_at_station.ipynb.
This can be run using:
jupyter notebook plot_bathymetry_at_station.ipynb
Please check the jupyter notebook for details about the code steps, input files and user-controlled parameters.
Contributions and collaborations are welcomed from anyone with an interest in GO-SHIP, and more in general ship-based hydrographic observations and python.
For bugs, feature requests, and clear suggestions for improvement please open an issue.
If you use this software in your work, please provide visible credit/citation.