Geospatial and geologic site terms for… (G25AP00369) – Project Grant to Merrimack College

Activities: The activities to be performed include: (1) develop a spatially-continuous nonergodic site term for gmms in california using geospatial variables and state-level surficial geology (2) develop a spatially-continuous nonergodic site term for gmms in utah using geospatial variables and state-level surficial geology and (3) compare the results of these models with other published ergodic and nonergodic gmms in terms of site-to-site variability reduction, and provide recommendations on adding site-specific geotechnical site characterization for further uncertainty reduction.deliverables and expected outcomes: the deliverables of this research will be: (a) a geospatial and geologic site terms dataset for california and utah (b) map-based geospatial and geology-based site terms for use with an ergodic base GMM for both california and utah, and (c) an implementation model for using all three levels of site terms (geospatial, geologic, and geotechnical) with existing ground motion models. The site terms will be provided in geographic information system (GIS) raster format for easy access through an online repository.intended beneficiary(IES): this project is focused on california and utah. The development of ground motion models using broadly-available geospatial and geological data will reduce the uncertainty in seismic hazard estimations for each state. This project will therefore benefit public agencies, state agencies, federal agencies, and stakeholders that perform seismic design in these regions. Moreover, the ground-motion modeling framework that we develop could be applied to broader areas in the future. The long-term goal of this research is to improve the site term models for use in nonergodic gmms, which will provide higher resolution and more accurate estimates of ground motions for seismic hazard assessment and use in real time ground motion products. In addition, this project will impact the professional development of one graduate student researcher and one undergraduate student researcher, as well as students at both tufts university and merrimack college.
Subrecipient activities: N A

Geospatial and geologic site terms for nonergodic ground motion models for california and utah:collaborative research with tufts university and merrimack collegeproject period: 8 1 2025 through 7 31…

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