- ETH Zurich Switzerland
- Université Paris Diderot France
- Utrecht University Netherlands
- University of Lorraine France
- Department of Earth Sciences ETH Zurich Switzerland
- University of Houston - Victoria United States
- Istanbul Technical University Turkey
- Department of Earth and Atmospheric Sciences University of Houston United States
- Department of Earth Sciences Faculty of Geosciences Utrecht University Netherlands
- Ludwig-Maximilians-Universität München Germany
- American Geophysical Union
- American Geophysical Union United States
- Spanish National Research Council Spain
- University of Western Australia Australia
We present a general concept for evolutionary, collaborative, multiscale inversion of geophysical data, specifically applied to the construction of a first-generation Collaborative Seismic Earth Model. This is intended to address the limited resources of individual researchers and the often limited use of previously accumulated knowledge. Model evolution rests on a Bayesian updating scheme, simplified into a deterministic method that honors today's computational restrictions. The scheme is able to harness distributed human and computing power. It furthermore handles conflicting updates, as well as variable parameterizations of different model refinements or different inversion techniques. The first-generation Collaborative Seismic Earth Model comprises 12 refinements from full seismic waveform inversion, ranging from regional crustal- to continental-scale models. A global full-waveform inversion ensures that regional refinements translate into whole-Earth structure. ©2018. American Geophysical Union. All Rights Reserved.
This work was supported by the PASC project GeoScale, the CSCS computing time grant ch1, the European Research Council (ERC) under the EU’s Horizon 2020 programme (grant 714069), Istanbul Technical University, the National Science Council of Turkey, the A. v. Humboldt Foundation, and the EU-COST Action ES1401-TIDES-STSM.
Andreas Fichtner et. al.