About SeismoSpect

SeismoSpect constitutes a simple and efficient platform that will allow users to create their own library of ground motion records and save them all in a single file, making it easy to handle and share large numbers of records. This application is capable of applying several filter types and to perform baseline-correction using up to third order polynomials. This tool is also capable of computing the mean spectral response of a collection of accelerograms and to compare these results with a reference spectrum (users can thus combine different records in order to individuate those whose average spectrum will meet a certain reference spectrum). Finally, a module was introduced to compute a number of strong-motion parameters often required by engineer seismologists and earthquake engineers, such as:

• Elastic response spectra and pseudo-spectra
• Overdamped and constant-ductility inelastic response spectra
• Root-mean-square (RMS) of acceleration, velocity and displacement
• Arias (Ia) and characteristic (Ic) intensities
• Cumulative absolute velocity (CAV) and Standardized Cumulative Absolute Velocity (CAV_STD)
• Specific energy density (SED)
• Acceleration (ASI) and velocity (VSI) spectrum intensity
• Housner intensity
• Sustained maximum acceleration (SMA) and velocity (SMV)
• Effective design acceleration (EDA)
• Predominant Period (Tp)
• Significant duration
• Number of Effective Cycles and Damage Index
• Impulsivity index (IP Index)
• Average Spectral Acceleration (Sa,avg/AvgSa)
• Maximum Incremental Velocity

The program features a friendly graphical user interface capable of reading accelerograms saved in multiple text file formats. Owing to its full integration with the Windows environment, SeismoSpect allows for numerical and graphical results to be copied to any Windows application (e.g. MS Excel, MS Word, etc.), noting that the characteristics plots can be fully customised from within the program itself.