Reproducing research with the Marchenko method and inversion with the SEISCOPE toolbox

Workshop 15: Friday, 7 June
Lecture Room:17
Conveners: Jan Thorbecke (Cray)
Joeri Brackenhoff (TU Delft)
Ludovic Métivier (Univ. Grenoble Alpes)
Romain Brossier (Univ. Grenoble Alpes)

Description: 

In this workshop we will reproduce results and use software of reproducible research papers about the Marchenko method and the SEISSCOPE toolbox. After the theory is briefly explained, the participants will work in groups during on a few problems the hands-on sessions and present their results to the other groups.

The workshop is based on two published papers: 

 -1- Implementation of the Marchenko method. 

Jan Thorbecke, Evert Slob, Joost van der Neut, Joeri Brackenhoff, and Kees Wapenaar, 2017, Geophysics, Vol. 82(6), WB29-WB45. 


 -2- The SEISCOPE optimization toolbox: A large-scale nonlinear optimization library based on reverse communication. 

Ludovic Métivier and Romain Brossier, 2016, Geophysics Vol. 81(2), F1-F15. 

Read More: https://library.seg.org/doi/10.1190/geo2015-0031.1 

The aim of the workshop is to reproduce the results in two specific papers with the open-source software bundled with each paper.  

The workshop, split into a morning and afternoon session, will start with defining a common ground to make sure that everybody understands the physics and is familiar with the vocabulary. 

Afterwards, people will work in teams (3-5 people per team) to reproduce the research. For each paper there will be a few tasks/problems defined that can be solved with the provided software. The goals of these problems is that the attendants start to understand the underlying algorithm and can use the software. These tasks must be real challenges: some of the teams should not be able to solve the challenge in the given time. 

After a given time (2-3 hours), each team presents their solution of the first problem in about 10 minutes.

For the afternoon session, the teams are re-organised such that everybody works with all different people. People are not allowed to sit in a team with the same persons as during the first assignment. 

The goal and outcome of the workshop is that attendees will bring home new software tools they understand and can use, have learned new skills, and have met new people they worked together with on solving the problems. 

Required skills to attend the workshop: 

- Compile, read and write C/Fortran code and run programs in Linux.
- Good understanding of Geophysics.
- Bring a laptop than can run Linux and ssh to a compute resource.


Workshop Programme:

09:00 Start and Introduction
09:10Introduction of Reproducing Marchenko Results
09:20Organising in Groups of 3-4 People
09:25 - 12:00Working with the Marchenko Code
10:00 - 10:20Coffee break
12:00 - 12:30Groups Discuss/Present Their Results and Findings
12:30 - 13:30Lunch break
13:30 Introduction of Reproducing SEISCOPE Results
14:00 - 16:30Working with the SEISCOPE Code
15:00 - 15:20Coffee break
16:30Groups Discuss/Present Their Results and Findings
17:00End of Workshop

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