Enhancements to Derivative Data Products at the IRIS DMC

The IRIS DMC continues to evolve its suite of high-level derivative data products and related software packages. This includes adding new features, refining existing features, and modernization efforts. The modernization is primarily focussed on porting product generation codes to Python 3 and enhancing visualizations when applicable. Additionally, codes that access waveforms are updated with the capability to access data from any FDSN data center that supports web services. As these codes are ported, they are offered as publicly accessible, open source downloads. The Ground Motion Visualizations (GMV 2.0) data product was released in June 2020 (code release in September 2020) and introduces advanced features such as: utilization of all available open data from seismic stations across multiple FDSN data centers, enhanced graphics, mixed data channels, flexible viewport, support for repeated events to create Super GMVs, and capability to extend the GMVs technological reach beyond the traditional seismic data. The Aftershocks data product was released in August 2020 (code release February 2021) with enhanced and expanded collection of plots and animations. The Aftershocks code can be utilized to create custom animations and plots of aftershocks, seismic sequences, or swarms. The Noise Toolkit (NTK 2.0) that was released in December 2020 provides a collection of programs to assist users with 1) computing Power Spectral Density (PSD) of station waveform data using customized parameters, 2) computing microseism energy from PSDs at different frequency bands and 3) performing frequency-dependent polarization analysis of waveform data available from FDSN data centers. The Back Projection (BP 2.0) data product is scheduled for release in fall of 2021 with enhanced animations and plots. The code is highly configurable and can generate back projection videos and summary plots for a customized set of stations from FDSN data centers. The Synthetics Engine (Syngine) service, while not a version 2.0 upgrade, has been expanded to provide synthetic waveforms for Mars quakes from selected Mars velocity models hosted by the ETH, Zurich.