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Moon - Gravity grid at 10 arc-minute resolution

Global 10 arc-minute resolution grids of the amplitude of the gravity acceleration (gravitational + centrifugal) of the Moon at a constant height. Generated from the spherical harmonic model GRGM1200B (Goossens et al., 2019).

Gravity field of the Moon showing high and low patterns around all of the many circular craters

Summary
File moon-gravity-10arcmin.nc
Size 2.7 Mb
Version v1
DOI https://doi.org/10.5281/zenodo.10694319
License CC-BY
MD5 md5:d4b9c45f9cbfb0ff903816f89cd0edcf
SHA256 sha256:2b38bdd8ef6ef3af301728387a5a1f27f0a028c0dfc867011125065a3d66acf9
Source Goossens, S., Sabaka, T. J., Wieczorek, M. A., Neumann, G. A., Mazarico, E., Lemoine, F. G., et al. (2020). High‐Resolution Gravity Field Models from GRAIL Data and Implications for Models of the Density Structure of the Moon's Crust. Journal of Geophysical Research: Planets. doi:10.1029/2019je006086 ; NASA's Planetary Geology, Geophysics and Geochemistry Laboratory
Original license public domain
Processing code prepare.ipynb

Changes made

These are the changes made to the original dataset.

  • Expanded the spherical harmonic model into a grid.
  • Replaced the GM, radius, and angular velocity of the model the those from Wieczorek (2015).
  • Generate the grid at a constant height of 11 km above the reference lunar sphere to guarantee the data are outside the topographic masses.

About this repository

This is a place to format and prepare the original dataset for use in our tutorials and documentation.

We include the source code that prepares the datasets for redistribution by filtering, standardizing, converting coordinates, compressing, etc. The goal is to make loading the data as easy as possible (e.g., a single call to pandas.read_csv or xarray.load_dataset). Whenever possible, the code also downloads the original data (otherwise the original data are included in this repository).

💡 Tip: The easiest way to download this dataset is using Pooch, particularly to download straight from the DOI of a release.

Contributing

See our Contributing Guidelines for information on proposing new datasets and making changes to this repository.

License

All Python source code is made available under the BSD 3-clause license. You can freely use and modify the code, without warranty, so long as you provide attribution to the authors.

Unless otherwise specified, all data files and figures created by the code are available under the Creative Commons Attribution 4.0 License (CC-BY).

See LICENSE.txt for the full text of each license.

The license for the original data is specified in this README.md file.