Re: Multi Tectoni Region Type
Marco Pagani
You need to replicate each source and assign it to the corresponding tectonic region (I struggle to understand the logic of this).
Dear OpenQuake team,
I hope this message finds you well.
I am currently implementing multiple sources in my project.
For example, in the source_model.xml file, I have configurations such as:
<areaSource id="A1" name="Team A Source 1" tectonicRegion="Active Shallow Crust">
<areaSource id="A2" name="Team A Source 2" tectonicRegion="Active Shallow Crust">
However, when I configure the sources in this way, I found that the GMPE file only applies the GMPEs corresponding to tectonicRegion="Active Shallow Crust".
What I would like to do is apply all GMPEs to a single source.
My GMPE logic tree file (gmpe_logic_tree.xml) is structured as follows:
<logicTree logicTreeID='lt1'>
<logicTreeBranchingLevel branchingLevelID="bl1">
<logicTreeBranchSet uncertaintyType="gmpeModel" branchSetID="bs1"
applyToTectonicRegionType="Stable Continental">
</logicTreeBranchingLevel>
<logicTreeBranchingLevel branchingLevelID="bl1">
<logicTreeBranchSet uncertaintyType="gmpeModel" branchSetID="bs2"
applyToTectonicRegionType="Subduction Interface">
</logicTreeBranchingLevel>
<logicTreeBranchingLevel branchingLevelID="bl1">
<logicTreeBranchSet uncertaintyType="gmpeModel" branchSetID="bs3"
applyToTectonicRegionType="Active Shallow Crust">
In other words, I would like my source_model.xml to allow a single source to use Active Shallow Crust, Subduction Interface, and Stable Continental GMPEs altogether.
I would greatly appreciate any guidance on how to achieve this.
Thank you very much for your assistance.
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jiha...@gmail.com
Thank you for your response, Marco.
In fact, in Korea, the frequency of earthquakes is relatively low, so we do not have GMPEs that are highly accurate.
For this reason, we use GMPEs developed for Korea ("Stable Continental") as well as GMPEs provided by other countries("Subduction Interface", "Active Shallow Crust").
Therefore, we need to apply multiple TRT values to each area source.
Thank you :)
Marco Pagani
If this is the case, you can put them into multiple branches of a single branch set with weights reflecting your confidence that each model will represent the best option for modelling ground motion. I find a cleaner option than duplicating sources in the SSM.
btw the logicTreeBranchingLevel tag is not needed anymore
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jiha...@gmail.com
Thank you very much for your guidance, Marco. Reflecting your advice, I am planning to proceed as follows.
First, in the Source_model.xml file, I define separate sources for each tectonic region type:
<areaSource id="A1" name="Team A Source 1" tectonicRegion="Active Shallow Crust">
<logicTreeBranchSet branchSetID="bA21"
uncertaintyType="maxMagGRRelative"
applyToSources="A1">
<logicTreeBranch branchID="bA211">
<uncertaintyModel>+0.0</uncertaintyModel>
<uncertaintyWeight>0.6</uncertaintyWeight>
</logicTreeBranch>
</logicTreeBranchSet>
<logicTreeBranchSet branchSetID="bA212"
uncertaintyType="maxMagGRRelative"
applyToSources="A12">
<logicTreeBranch branchID="bA2112">
<uncertaintyModel>+0.0</uncertaintyModel>
<uncertaintyWeight>0.6</uncertaintyWeight>
</logicTreeBranch>
</logicTreeBranchSet>