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A probabilistic earthquake source inversion framework. Designed and crafted in Mordor.
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A probabilistic earthquake source inversion framework

Grond is an open source software tool for robust characterization of earthquake sources. Moment tensors and finite fault rupture models can be estimated from seismic, InSAR, and GNSS observations. It serves as a modular framework for the analysis of diverse magmatic, tectonic, and other geophysical processes at all scales. Read on...

Documentation and installation

Find the documentation and install instructions at

Community and support

Please use the Grond channel in the Pyrocko Hive for discussion and feedback. To file a bug report, please use GitHub Issues.


The recommended citation for Grond is::

Heimann, Sebastian; Isken, Marius; Kühn, Daniela; Sudhaus, Henriette; Steinberg, Andreas; Vasyura-Bathke, Hannes; Daout, Simon; Cesca, Simone; Dahm, Torsten (2018): Grond - A probabilistic earthquake source inversion framework. V. 1.0. GFZ Data Services.


You can find the BibTeX snippet in the CITATION file.


GNU General Public License, Version 3, 29 June 2007

Copyright © 2018 Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Potsdam, Germany and University of Kiel, Kiel, Germany.

Grond is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. Grond is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see


Helmholtz Centre Potsdam German Research Centre for Geoscienes GFZ
Section 2.1: Physics of Earthquakes and Volcanoes
Helmholtzstraße 6/7
14467 Potsdam, Germany