Use this seismology calculation to reproduce a stated convention, screen observations, or compare scenarios whose units, coordinate conventions, catalog selection, and model assumptions are known.

n_steps

Required integer. Gain changes inside the analysis window.

Event?

Required boolean. Whether real event energy occupies the window.

The cited overview of Seismology supplies background for the terminology and domain context used by this tool.^[1]

Flag windows where automatic-gain-control steps coincide with event energy. Inputs are interpreted exactly in the displayed units and the calculation returns the following fields without presentation rounding.

Artifact?

Returned boolean. Whether gain steps likely corrupt the window.

Action

Returned string. Processing recommendation.

• Earth structure, source geometry, path effects, site response, instrument response, catalog completeness, uncertainty, and the fitted range can dominate the accuracy of simplified seismic calculations.
• n_steps must be at least 0.
• Use finite inputs in the displayed units, preserve source measurements and assumptions, and independently verify consequential decisions.

For analysis or hazard decisions, retain uncertainty and provenance and compare the result with waveform processing, calibrated regional models, and guidance from qualified seismologists or the responsible agency.

• Station Residual Outlier Sigma Flagger

  Flag stations whose travel-time residuals exceed k standard deviations of the set.

• Apparent Stress Energy Ratio Calculator

  Apparent stress σ_app = μ · Es / M₀ in megapascals.

• Between Event Tau Variance Calculator

  Between-event tau variance decomposition across multiple events.