DOI: 10.5281/zenodo.10892430
title: Calibration of Nonlinear Rheology Parameters in the Salt Lake Basin from the March 18, M5.7 Magna, Utah, Earthquake Sequence Records

description: Simulated time series and scripts to extract intensity measures described in the U.S. Geological Survey (USGS) technical report (under USGS award number G22AP00033).

The simulation results are located "time-series-all.zip" with folder names defined as in the table-of-contents shown in the additional descriptions, all waveform data are in ASCII format, where the first column is time in seconds from the initial time of the event, the second column is velocity in m/s. The python scripts used to calculate intensity measurements based on the time series are located in "itensity-measures-calculation.zip", with package requirements listed within each script.
description: after-sim1 (sv1)
Linear simulation for the Mw4.59 aftershock (14:12 UTC, same in all aftershock results), Qs=0.05Vs*f^0.4, using WFCVM (version 3d) and a point source Brune's model with stress drop = 2.9 MPa.


after-sim2 (sv2)
Same as above, but Qs=0.05Vs*f^0.6, WFCVM


after-sim3 (sv3)
Same as above, but Qs=0.075Vs*f^0.3, WFCVM


after-sim4 (sv6)
Same as above, but Qs=0.075Vs*f^0.4, WFCVM


after-sim5 (sv4)
Same as above, but Qs=0.075Vs*f^0.6, WFCVM


after-sim6 (sv5)
Same as above, but Qs=0.1Vs*f^0.3, WFCVM


after-sim7 (p5s)
Same as above, but Qs=0.1Vs*f^0.6, WFCVM


after-sim8 (sv7)
Same as above, but Qs=0.05Vs*f^0.4, WFCVM LVT (taper depth Zt=1 km)


after-sim9 (sv8)
Same as above, but using WFCVM with LVT (Zt=1 km) and SSH (vertical correlation length LZ=400 m, standard deviation sigma=5%)


after-sim10 (sv9)
Same as above, but using WFCVM with LVT(Zt=1 km)and SSH (Lz=80 m, sigma=10%)


after-sim11 (sv10)
Same as above, but using WFCVM with LVT(Zt=1 km)and SSH (Lz=400 m, sigma=5%)


after-sim12 (sv11)
Same as above, but using WFCVM with LVT(Zt=1 km)and SSH (Lz=400 m, sigma=10%)


main-sim1 (s3s)
Linear simulation for the Mw5.5 Magna mainshock, using Graves-Pitarka finite fault model described as (a) in the report, and the optimal velocity model made of WFCVM with LVT(Zt=1 km)and SSH (Lz=400 m, sigma=10%)


main-sim2 (s4s)
Same as above, but using finite fault model (b) as in the report


main-sim3 (s5s)
Same as above, but using finite fault model (c) as in the report


main-sim4 (s8s)
Same as above, but using finite fault model (d) as in the report


main-sim5 (s10s)
Same as above, but using finite fault model (e) as in the report


main-sim6 (s11s)
Same as above, but using finite fault model (f) as in the report


main-sim7 (sks)
Same as above, but using finite fault model (g) from kinematic inversion (Pollitz et al., 2020) as in the report


main-sim8 (s11s0)
Same as above, but using finite fault model (f) in the report, and the WFCVM without LVT or SSH


main-sim9 (wb0)
Nonlinear simulation for the Mw5.5 Magna mainshock, applying finite fault model (f), the WFCVM without LVT or SSH, 7 yield surfaces in the Iwan-style nonlienar model, and the Darendeli's median reference strain relations with minimum allows Vs=750 m/s


main-sim10 (wb0y)
Same as above, but using 10 yield surfaces in the Iwan-style nonlienar model.


main-sim11 (wb1)
Same as above, but using 7 yield surfaces, and Darendeli's median reference strain relations, with Vs capped at 2,000 m/s


main-sim12 (wb2)
Same as above, but using Darendeli's reference strain relations (-1 standard deviation)


main-sim13 (wb1s)
Same as above, but using Darendeli's reference strain relations (median), and the optimal velocity model (WFCVM with LVT and SSH)


main-sim14 (wb2s)
Same as above, but using Darendeli's reference strain relations (-1 standard deviation)


main-sim15 (wb3s)
Same as above, but using Darendeli's reference strain relations (-2 standard deviation)


main-sim16 (wb6s)
Same as above, but using Darendeli's reference strain relations (-3 standard deviation)


main-sim17 (wb4s)
Same as above, but using Darendeli's reference strain relations (+1 standard deviation)


main-sim18 (wb5s)
Same as above, but using Darendeli's reference strain relations (+2 standard deviation)