This report presents the development and results of a new surface rupture mapping and fault displacement database. The new database provides an updated and standardized collection of fault displacement measurements and surface rupture maps. The work was completed as part of the Fault Displacement Hazard Initiative (FDHI) Project, which is a multi-year and communitybased research project coordinated by the University of California. Next-generation fault displacement models are being developed through the FDHI Project, and the new models will improve estimates of the probability, amplitude, and spatial distribution of principal and distributed displacements in surface-rupturing earthquakes. The FDHI Database provides a common set of inputs that can be used by model development teams, allowing a more systematic comparison of model performance. Our new database contains metadata and geospatially-controlled surface rupture and fault displacement data from 66 global historical earthquakes of M 5.0 to 8.0 and all styles of faulting. The data were collected collaboratively through a literature review and have been assessed in detail for completeness, accuracy, and consistency. Analysis and geologic interpretation of the raw data were performed to meet model development needs, including the development of an event-specific coordinate system for each earthquake, classifying ruptures and measurements as principal or distributed, and developing recommended net slip amplitudes from reported slip components. All information is contained in a structured relational database, and the contents have been aggregated into flatfiles for formal documentation and enduser convenience. The FDHI Database is anticipated to be used by multiple model development teams in the FDHI Project and will also support related research across the geoscience community. The database and its documentation are available through the Natural Hazards Risk and Resiliency Research Center (NHR3) web site (https://www.risksciences.ucla.edu/nhr3).
Fault Displacement Hazard Initiative Database
NURMINEN F.;BONCIO P.;
2021-01-01
Abstract
This report presents the development and results of a new surface rupture mapping and fault displacement database. The new database provides an updated and standardized collection of fault displacement measurements and surface rupture maps. The work was completed as part of the Fault Displacement Hazard Initiative (FDHI) Project, which is a multi-year and communitybased research project coordinated by the University of California. Next-generation fault displacement models are being developed through the FDHI Project, and the new models will improve estimates of the probability, amplitude, and spatial distribution of principal and distributed displacements in surface-rupturing earthquakes. The FDHI Database provides a common set of inputs that can be used by model development teams, allowing a more systematic comparison of model performance. Our new database contains metadata and geospatially-controlled surface rupture and fault displacement data from 66 global historical earthquakes of M 5.0 to 8.0 and all styles of faulting. The data were collected collaboratively through a literature review and have been assessed in detail for completeness, accuracy, and consistency. Analysis and geologic interpretation of the raw data were performed to meet model development needs, including the development of an event-specific coordinate system for each earthquake, classifying ruptures and measurements as principal or distributed, and developing recommended net slip amplitudes from reported slip components. All information is contained in a structured relational database, and the contents have been aggregated into flatfiles for formal documentation and enduser convenience. The FDHI Database is anticipated to be used by multiple model development teams in the FDHI Project and will also support related research across the geoscience community. The database and its documentation are available through the Natural Hazards Risk and Resiliency Research Center (NHR3) web site (https://www.risksciences.ucla.edu/nhr3).I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
