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.

z_i

Required list. Hypocentral depths.

Δz (km)

Optional number in km. Bin width.

z_max (km)

Optional number in km. Upper histogram edge.

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

Bin hypocentral depths into fixed-width bins with an out-of-range tail count. Inputs are interpreted exactly in the displayed units and the calculation returns the following fields without presentation rounding.

counts

Returned list. Counts per bin from zero depth upward.

n<0

Returned integer. Depths above the surface datum (fixed depths).

n>max

Returned integer. Depths beyond the upper edge.

• 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.
• 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.

• Wadati Residual Histogram Binner

  Bin station Wadati residuals into a fixed-width histogram with outlier tail capture.

• Catalog Magnitude Type Histogram Summary

  Count catalog magnitudes by reported type (ml, mb, ms, mw, other).

• Spatial Grid Cell Count Density Summary

  Bin event eastings/northings into a square grid and report cell occupancy statistics.