Strong Motion Data Analysis 2.1

Strong Motion Data Analysis is a specialized tool for turning raw strong-motion recordings into clear, actionable insights. Built for seismologists, earthquake engineers, and researchers, it streamlines the full workflow—from data ingestion and quality control to advanced signal processing, spectral analysis, and reporting—so you can move quickly from event to evidence.

Key features:

• Fast import of common strong-motion data formats with automatic metadata handling
• Robust preprocessing: de-trending, baseline correction, filtering, and instrument response removal
• Computation of core intensity measures: PGA, PGV, PGD, Arias intensity, and significant duration
• Time- and frequency-domain analysis, including Fourier spectra and response spectra (e.g., SA/PSA)
• Velocity and displacement derivation via stable numerical integration
• Quality-control diagnostics for clipping, gaps, timing offsets, and noise
• Clear visualizations of waveforms, spectra, and station/event summaries
• Batch processing and automation hooks for reproducible, large-scale studies
• Flexible export of figures and results for reports, code compliance checks, and further modeling

Whether you need rapid post-event assessment or rigorous research-grade analysis, Strong Motion Data Analysis delivers accurate results, transparent methods, and a smooth path from raw accelerograms to decisions.

Strong Motion Data Analysis is developed by NIED. The most popular version of this product among our users is 2.1. The name of the program executable file is smda2.exe.