- Sandbox: Create a Crustal Fault Database
- Sandbox: Construct Earthquake Scenarios and Conduct Ground Motion Analysis
- Documentation: Create a Crustal Fault Database
- Documentation: Construct Earthquake Scenarios
- Documentation: Conduct Ground Motion Analysis
The sandbox modules on this page are designed to allow users to define crustal earthquake scenarios worldwide to conduct ground motion (GM) analysis at their sites of interest. The practical applications of this capability are:
- Estimate the GMs of real-time earthquakes at different locations with different site conditions, soon after earthquake occurrences
- Estimate/evaluate the GMs of future crustal earthquakes, at sites of interest, occurring in different parts of the world under different seismotectonic environments
Two modules are designed to achieve the objectives:
- The Create a Crustal Fault Database module allows users to create a database of crustal fault segments worldwide
- The Construct Earthquake Scenarios and Conduct Ground Motion Analysis module enables users to simulate multi-segmented earthquake scenarios worldwide to conduct GM analysis at sites of interest
The impacts of different tectonic environments on earthquakes GMs are accommodated by a logic-tree type formulation of the GM. Users can simulate different seismotectonic environments by defining weighting factors for the two GM prediction equations (GMPEs) branches:
- One GMPE branch represents active-tectonic environments, consisting of four GMPEs as recommended by the USGS for the western US
- The other GMPE branch represents stable tectonic environments, consisting of seventeen GMPEs as recommended by the USGS for the eastern US