Speaker
Description
Noise levels at a waveform station can be analysed by computing Power Spectral Density (PSD), which is an important quality indicator for waveform data recorded by the International Monitoring System (IMS) seismic, hydroacoustic and infrasound network. The continuous monitoring of the PSDs as part of the quality control process ensures that the IMS network is operating efficiently, and that instrument malfunctions or data quality issues can be detected and addressed in a timely manner. Currently at the Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO), the PSD data is computed using different tools and is exposed to several challenges, including obsolescence, maintainability, homogenization, reproducibility, and usability. The CTBTO explores solutions to reduce the number of applications by having one single library that could be used in different applications dedicated to performing station quality control, certification or revalidation of the IMS station, or assess and evaluate network performance. The CTBTO evaluates the DTK-QUALITY software (developed and maintained by French National Data Centre), which is a feature-rich and configurable command-line tool. This presents a promising opportunity to overcome existing challenges and to advance the quality control process for the benefit of the International Data Centre, IMS and authorized users (NDCs through NDC in a Box and station operators).
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