Logic Tree to use Guttenberg Ritcher and Characteristic Earthquake

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Martin Wijaya

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Sep 9, 2024, 5:55:37 AM9/9/24
to OpenQuake Users
Dear Developer

I'm currently using Openquake 3.20.1 and just start to learn it.
I have read the user guide regarding the logic tree. However, I dont understand the part where I can make a branching logic tree.

In my country, it is necessary to use the following logic tree for SHA analysis:
Logic Tree.jpg

May I know how to do it?
Or any example on how to make something like above?

Regards
Ir. Martin Wijaya, S.T., Ph.D.
Head of Parahyangan Catholic University Seismic Center


Marco Pagani

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Sep 12, 2024, 2:38:14 AM9/12/24
to OpenQuake Users

For the first 3 branch sets (from left to right) you can create a set of input models (6 files in total). For the ground motion part you can follow what’s described in many examples https://github.com/gem/oq-engine/blob/master/demos/hazard/LogicTreeCase2ClassicalPSHA/gmpe_logic_tree.xml


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