This TAG also directly supports efforts in the following areas highlighted in the 2019 SCEC Science Plan: Within SCEC5, this TAG is complementary to - but not overlapping with - research activities carried out in the Technical Activity Group on nonlinear effects in the shallow crust. This TAG will facilitate research initiatives at the intersection of seismology, ground motion, and computational science.
SCIPY 2014 3D EARTHQUAKE ACTIVITY UPDATE
To make further progress on these CVMs, open-source full waveform modeling and tomography (FWT) workflows are needed to evaluate and/or update these models, methods need to be developed to merge new high-resolution localized models into the existing models, strategies to integrate constraints from other geophysical, geotechnical, and geological sources are required, and methods for assessing model uncertainty must be developed. SCEC's Unified CVM framework (Small et al., 2017) provides access to these models as well as other models covering different regions of California, including the San Francisco Bay Area and the entire state.
SCEC has also developed a Central California Area CVM, current version CCA-06. Incremental improvements are being made to CVM-H over time, but CVM-S model is essentially frozen at the current version. Problem Definition and Relationship to SCEC Research PrioritiesĪ substantial effort has gone into the development of the two "standard" SCEC CVMs for Southern California, currently CVM-H version 15.1.0 (Shaw et al., 2015) and CVM-S version 4.26 (Lee et al., 2014). This TAG will help galvanize efforts to develop and apply an open framework for the assessment, validation, and improvement of CVMs. The mission of this Technical Activity Group (TAG) is to promote and coordinate efforts to improve SCEC Community Velocity Models (CVMs). CVM TAG Mission and Goals - DRAFT A Technical Activity Group for the coordination of SCEC5 research on Community Velocity Models The primary outcomes expected from the workshop are a completed mission and goals statement for the CVM TAG, including prioritized action items, and plans for submission of coordinated and collaborative proposals in response to the 2020 SCEC Science Collaboration Plan and other funding opportunities. The tasks for the workshop are (1) to reach final consensus on the mission and goals statement of the TAG (a draft of which will be circulated in advance of the workshop), (2) to refine and prioritize the identified action items, and (3) to coordinate plans for submission of related SCEC 2020 proposals as well as future proposals to other funding agencies. Expand the participation of SCEC researchers in work related to improving and utilizing the CVMs.Develop methods for CVM assessment and validation, including providing uncertainty estimates.Develop open methods for improving SCEC CVMs.To make further progress on these CVMs, open-source workflows are needed to evaluate and/or update these models, methods need to be developed to merge new high-resolution localized models into the existing models, strategies to integrate constraints from other geophysical, geotechnical, and geological sources are required, and methods for assessing model uncertainty must be developed. A substantial effort has gone into the development of the two "standard" SCEC CVMs for Southern California, currently CVM-H version 15.1.0 (Shaw et al., 2015) and CVM-S version 4.26 (Lee et al., 2014).
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