Broadband Ground Motion Simulations for an Earthquake “Doublet” on the Newport-Inglewood and Palos Verdes Faults

Publication Date

2024-09-13

Time Period

2024-10-17

Graves, R.W., 2024, Broadband Ground Motion Simulations for an Earthquake “Doublet” on the Newport-Inglewood and Palos Verdes Faults: U.S. Geological Survey data release, https://doi.org/10.5066/P149DTBJ.

These data were simulated in order to facilitate assessment of potential impacts of an earthquake "doublet" occurring in the Los Angeles basin region of California. In an earthquake doublet, an initial large magnitude (M7+) earthquake is followed several hours later by another large magnitude event occurring in close proximity to the first event. The impact assessment must consider the cascade of effects related to both events, e.g., the first event partially damaging a structure leaving it in a compromised state, which is then again subjected to strong shaking in the second event. The simulated broadband three-component time series can be used in the same manner as recorded earthquake ground motion data in any application requiring the use of such data. Furthermore, the scenario ShakeMaps derived from the simulations can be utilized in any application requiring USGS ShakeMap data as input (e.g., regional loss estimation).

• USGS Data Release Products