Many of the measures listed should have been in place years ago. However, within minutes of the publication of the ECB’s action plan, shadow secretary of state for digital, culture, media and sport, Jo Stevens, said: “The report today is a reminder of previous ECB failures to get a grip on the racism scandal engulfing cricket. Perhaps this has been the shock that is going to give us the opportunity to bring this game together once and for all.” “It’s sad, frankly, but I think sometimes an earthquake can provide the opportunity to accelerate years and years of change in a very quick period of time. For someone in my job that’s the most difficult thing you can hear. “The most damning part of Azeem’s testimony was he didn’t want his son to be part of the game. “The last few weeks have been very, very tough for cricket. That is something I’ve felt passionately about since the moment I walked into this job and I’m not going to walk away from that now. “I understand I have the backing of the game and I am very motivated to make sure we provide this more welcoming environment across our sport for everybody. Indeed, the main features of near‐source ground motion in BB‐SPEEDset, ranging from the statistical distributions of peak and integral measures both at short and long periods, the ground‐motion attenuation with distance, to the features of impulsive ground motions and directionality effects, are in substantial agreement with those from NESS.“I am so committed to sorting this issue with the game,” he said. Finally, a comprehensive set of consistency checks is made to verify the absence of any systematic bias in the trend of the BB‐SPEEDset results with respect to the NEar‐Source Strong‐motion (NESS) version 2.0 near‐source recorded ground‐motion dataset. To pursue this objective, the following steps were necessary, namely: (1) the implementation of an effective workflow suitable to process in an homogeneous format various SPEED simulations (2) the generation of broadband time histories using a technique based on artificial neural networks, trained on strong‐motion records (3) the creation of a flat file collecting, for each simulated scenario, the most relevant metadata (fault rupture scenario, site response proxies, source‐to‐site distances) as well as a comprehensive set of ground‐motion intensity measures of the processed broadband waveforms (peak ground acceleration, velocity and displacement, spectral ordinates, duration, pulse period, etc.).
Taking advantage of the earthquake ground‐motion scenarios produced so far by SPEED, in most cases validated against earthquake recordings, the main objective of this work is to construct and validate a dataset of simulated broadband waveforms to be used as a support for characterization and modeling of near‐source earthquake ground motions.
This article introduces a strong‐motion dataset of near‐source broadband earthquake ground motions from 3D physics‐based numerical simulations-named BB‐SPEEDset-obtained by the code SPEED (SPectral Elements in Elastodynamics with Discontinuous Galerkin)-developed at Politecnico di Milano, Italy.