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Ground Motion Packet (GMP): A GeoJSON Specification for Ground Motion Metrics

We present a specification for earthquake event-associated and unassociated ground motion metrics to facilitate data exchange, called a Ground Motion Packet (GMP). This ground motion metric format follows the GeoJSON (https://geojson.org/) standard. The primary goal of the format is efficient and extensible representation of ground motion metrics, in which we use the term “metrics” to refer to parametric data derived from ground motion waveforms (e.g., accelerograms, velocity recordings). Examples of commonly used metrics include peak ground acceleration (PGA), peak ground velocity (PGV) and spectral acceleration (SA). This format is designed so that it can also include metrics that are gaining popularity for many engineering use cases, such as significant duration, Arias intensity and inelastic response spectra. This format also supports the expanding list of methods that combine as-recorded channels in computing ground motion metrics. We expect that this format will be useful for many applications that compute or make use of ground motion metrics including, but not limited to, ShakeMap. The GMP format is not intended as a complete description of station metadata or site installation, although the format does include metadata that is necessary for most ground motion metric use-cases. The purpose of the metadata included in the GMP format is to provide high-level information regarding the suitability of the metrics for common engineering/seismological applications. The format also supports provenance information that follows the SEIS-PROV standard (http://seismicdata.github.io/SEIS-PROV/).

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: Eric M. Thompson

Student Presenter: No

Additional Authors