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 target spectrum (users can thus combine different records in order to individuate those whose average spectrum will meet a certain target spectrum). Finally, a module was introduced to compute a number of strong-motion parameters often required by engineer seismologists and earthquake engineers, such as:
- Maximum acceleration, velocity and displacement
- Effective design acceleration
- Overdamped and constant-ductility inelastic response spectra
- Arias (Ia) and characteristic (Ic) intensities
- Cumulative absolute velocity (CAV) and specific energy density (SED)
- Root-mean-square (RMS) of acceleration, velocity and displacement
- Sustained maximum acceleration (SMA) and velocity (SMV)
- Acceleration (ASI) and velocity (VSI) spectrum intensity
- Predominant (Tp)
- Significant duration
- Number of effective cycles
- Damage index
- Maximum incremental velocity (MIV)
- Impulsivity index (IP Index)
- Average spectral acceleration (Sa,avg)
The program features a friendly graphical user interface capable of reading single accelerograms defined in both single or multiple values per line formats (the two most popular formats used by strong-motion databases). 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.
