LASIF: Large-scale seismic inversion framework

LASIF (Larg-scale Seismic Inversion Framework) is a data-driven workflow tool to perform full waveform inversions. It is opinionated and strict, meaning that it enforces a certain data and directory structure. The advantage is that it only requires a very minimal amount of configuration and maintenance. It attempts to gather all necessary information from the data itself so there is no need to keep index or content files.

All parts of LASIF also work completely on their own; see the class and function documentation at the end of this document. Furthermore LASIF offers a project based inversion workflow management system which is introduced in the following tutorial.

LASIF works with the notion of so called inversion projects. A project is defined as a series of iterations working on the same physical domain. Where possible and useful, LASIF will use XML files to store information. The reasoning behind this is twofold. It is easily machine and human readable. It furthermore also serves as a preparatory step towards a fully database driven full waveform inversion workflow as all necessary information is already stored in an easily indexable data format.

LASIF is data-driven, meaning that it attempts to gather all necessary information from the available data. The big advantage of this approach is that the users can use any tool they want to access and work with the data as long as they adhere to the directory structure imposed by LASIF. At the start of every LASIF operation, the tool checks what data is available and uses it. To achieve reasonable performance it employs a transparent caching scheme able to quickly any changes the user makes to the data. Also important to keep in mind is that LASIF will never delete any data.

Download

To download the software, please visit the external pageLASIF website.

Citation

If you use LASIF, please make proper reference to the following publication:

Krischer, L., Fichtner, A., Zukauskaite, S., Igel, H., 2015. Large-scale seismic inversion framework, Seis. Res. Lett. 86, 1198-1207.