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.

φ (°)

Required number in °. Strike of the fault.

N

Required integer. Number of synthetic stations.

seed

Required integer. Deterministic RNG seed.

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

Generate synthetic P-wave polarity training data for a strike-slip-dominant focal mechanism. Inputs are interpreted exactly in the displayed units and the calculation returns the following fields without presentation rounding.

az

Returned list. Station azimuths (ascending).

pol

Returned list. Radiation-pattern sign per azimuth (1 up, -1 down).

• 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.
• φ must be at least 0.
• N must be at least 1.
• N must be no greater than 10000.
• seed 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.

• Double Couple P T Axis Plunge Style Shortcut

  Shortcut P/T axis plunges for ideal focal styles (strike-slip, normal, reverse).

• Focal Style Rake Band Classifier

  Classify focal-mechanism style from the rake angle using standard Aki-Richards bands.

• Dip-Slip Seismic Moment and Average Dislocation Estimate

  Seismic moment and average dislocation estimate for a dip-slip rupture: geodetic moment M₀ = μ·A·ū plus a heuristic vertical offset scale; this tool does NOT solve the Okada (1992) elastic half-space displacement field.