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A DesignSafe Ground Motion Database

This work presents a ground motion database for California and its close surroundings (i.e., areas near the border with Nevada, Oregon and Arizona) between 1999 and 2021 observed by 74 different networks and data centers. This DesignSafe ground motion database for California is hereafter referred to as the DSGM-CA and is available at DesignSafe-Ci. The DSGM-CA includes earthquakes with magnitudes larger than 3 and focal depths less than 40 km. Ground motion records and events included in this dataset are collected and processed using the gmprocess toolkit, which is an automated protocol developed by the USGS. Path measures such as rupture distance and epicentral distance are computed. Pseudo-Spectral accelerations, duration metrics, Arias intensity and other ground motion intensity measures are provided for records that pass the quality assurance (e.g., signal-to-noise check) check performed by the gmprocess toolkit. Additionally, site metadata are provided, including wave velocity information (from proxy-based time-averaged shear-wave velocity for the top 30 m, V_s30, and from P- and S- wave measured velocity profiles when available), predominant frequency measured from microtremor-based horizontal-to-vertical ratios and site-specific kappa0 values computed from multiple ground motions recorded at each station. 131651 ground motions observed from 1251 earthquakes are included in this database with distances ranging from 0.24 to 335 km, which are accessible via DesignSafe.

Session: Improving Strong-motion Data, Products and Services: From Waveform Quality to Open Dissemination [Poster]

Type: Poster

Room: Evergreen Ballroom

Date: 4/20/2022

Presentation Time: 08:00 AM Pacific

Presenting Author: Chunyang Ji

Student Presenter: No

Additional Authors