Extension of the Adaptable Seismic Data Format (ASDF) for Applications in Engineering Seismology

Date: 4/25/2019

Time: 02:15 PM

Room: Pine

We propose an extension to the Adaptable Seismic Data Format (ASDF) for storing ground-motion intensity metrics for engineering seismology applications. The resulting data format provides a single file containing information related to the earthquake rupture, recording station, ground-motion time series, intensity metrics, and the provenance information (describing the source of the data and any subsequent processing). Typically this information has come from multiple sources and is in a variety of formats, creating obstacles to assimilating it into a common data management structure. Storing and sharing this data in a common and standardized structure will reduce the time spent on collection and migration, reduce errors and inconsistencies, and facilitate analysis with different software or programming languages.

Krischer et al. (2016) leveraged standard seismic data formats in developing the Hierarchical Data Format (HDF5) -based Adaptable Seismic Data Format (ASDF) container to store information about the earthquakes sources, ground-motion time histories, seismic station metadata, and the associated provenance information for use in full-waveform tomographic inversions. Krischer et al. provided a flexible means of including additional information through auxiliary data, as well as a C/Fortran library and a Python module to facilitate reading/writing data in the ASDF format. We propose a specific organization for ground-motion intensity metrics, such as peak amplitudes, response spectra, Arias intensity, duration, etc, within the auxiliary data.The HDF5-based ASDF container can hold data for one earthquake or a collection of earthquakes; the container is also suitable for storage of synthetic data associated with earthquake scenarios. We will present the data layout of our proposed extension of the ASDF container and examples illustrating common use cases for engineering seismology applications.

Presenting Author: Albert R. Kottke

Authors