the plAnetary Love nuMbers cAlculator
ALMA3 computes loading and tidal Love numbers for a spherically symmetric, radially stratified planet. Both real (time-domain) and complex (frequency-domain) Love numbers can be computed. The planetary structure can include an arbitrary number of layers, and each layer can have a different rheological law. Currently, ALMA3 can model the following linear rheologies: Elastic, Maxwell visco-elastic, Newtonian viscous fluid, Kelvin-Voigt solid, Burgers and Andrade transient rheologies.
ALMA3 is the result of research work by Daniele Melini, Christelle Saliby and Giorgio Spada. It is distributed free of charge under the BSD 3-clause license, with the hope that it may be useful for research and educational purposes. A copy of the BSD 3-clause license is included in this repository. Please acknowledge the use of ALMA3 by citing the following publication:
Melini, D., Saliby, C. & Spada, G., On computing viscoelastic Love numbers for general planetary models: the ALMA3 code, Geophysical Journal International, 2022, ggac263, https://doi.org/10.1093/gji/ggac263
To build ALMA3, type cd src and then make. If the build process is successful, a single executable named alma.exe will be created in the main directory. ALMA3 requires the FMLIB multi-precision library by D.M. Smith, which is included with the ALMA3 package.
To run ALMA3, type
alma.exe <config_file>
where <config_file> is the name of the configuration file containing all the options for the ALMA3 run. Some example configuration files are stored into the CONFIGS/ folder. Among other parameters, the configuration file contains the name of the data file describing the planetary rheological structure. Some example files are stored into the MODELS/ folder.
Please refer for any questions about ALMA3 to:
Daniele Melini, Istituto Nazionale di Geofisica e Vulcanologia, Roma, Italy, [email protected]
Giorgio Spada, University of Bologna, Italy, [email protected]