AstroGeoFit Documentation¶

AstroGeoFit is an Astronomical Calibration Tool for the Geological Time Scale, developed as part of the AstroGeo project funded by the European Research Council (ERC), and led by Jacques Laskar (CNRS). The software is licensed under the GNU License.

AstroGeoFit Documentation¶

Description¶

AstroGeoFit is an Astronomical Calibration Tool for the Geological Time Scale, developed as part of the AstroGeo project funded by the European Research Council (ERC) (AstroGeo-885250), led by Jacques Laskar (CNRS). The software is licensed under the GNU GPL 3.0 License. AstroGeoFit combines a genetic algorithm with Bayesian methods to calibrate geological time from sedimentary records, aiming to optimally tune geological time series.

Features¶

Genetic algorithm optimization for the determination of time-depth transfer function.
Bayesian framework for probabilistic analysis.
Extraction of the astronomical components from the sedimentary record.
Support for user-defined priors and stratigraphic constraints.
Visualization tools for tuning diagnostics.

Pre-Requisits¶

Before downloading the package, it is recommended to check the pre-requisits of the tool: Pre-Requisites of the AstroGeoFit Package.

Download AstroGeoFit¶

This tool can be downloaded from the main web page of the AstroGeo project, or from the following link: https://www.astrogeo.eu/wp-content/astrogeofit/astrogeofit_latest.zip .

The files that the user can expect to find are listed in the following section Download the AstroGeoFit Package

Installation and Updates¶

In order to facilitate the installation and the updating of the package, a guide is provided in the section Installation and Updates.

Get Started with AstroGeoFit¶

In order to get a first contact with AstroGeoFit and see how it works, we developed a step-by-step guide with an execution example which can be found in the Getting Started with AstroGeoFit section. If it’s is the first time that you use this tool, we strongly recommend to follow it.

AstroGeoFit Python Library¶

The functions of AstroGeoFit can be also executed as a Python library. There is a guide on how to use the tool as a library in the section AstroGeoFit Python Library.

Results¶

This tool shows the results of the analysis using diferent pre-established plots.

A detailed explanation of these figures that can be obtained as results can be found in Visualization of the Results Guide

Citation¶

AstroGeoFit will be released alongside the following publication. Please cite this article when using the AstroGeoFit software in scientific work:

Hoang, N., Laskar, J., Hara, N., Wu, Y., Sultanov, A., Sinnesael, M., Westerhold, T., & Bujons, P. AstroGeoFit: A Genetic Algorithm and Bayesian approach for the Astronomical Calibration of the Geological Timescale Paleoceanography and Paleoclimatology, 2025.

License¶

This software is licensed under the GNU GPL 3.0.s. See LICENSE.

Lead author : Jacques Laskar

Authors and Contributors¶

Primary code developers:

Nam Hoang – Algorithm design and initial prototype
Pau Bujons – Software engineering and clean implementation

Scientific contributors:

Jacques Laskar – Project lead, conceptualization, methodology, documentation
Nam Hoang - Methodology, Bayesian framework and statistical analysis
Yujing Wu – Testing, stratigraphic data analysis and documentation
Nathan Hara – Bayesian framework and statistical analysis
Arsen Sultanov – Bayesian framework, statistical analysis and prototyping

Acknowledgements¶

This software was developed as part of the ERC-funded AstroGeo project with support from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program (Advanced Grant AstroGeo-885250).

Requests and Inquiries¶

For any request or inquirie please address to: astrogeofit@astrogeo.eu.

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