Use this geological calculation for a transparent first-pass interpretation of measured rock, soil, fluid, well, stratigraphic, isotopic, geophysical, or seismic data under an explicitly selected model.

z

Reflector depth in meters.

dip

Reflector dip angle in degrees.

Horizontal migration aperture for a dipping reflector: z tan(dip) per side (and twice that for the full aperture), with reflector depth z in meters and dip angle in degrees. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Aperture

One-sided horizontal migration aperture in meters.

Full aperture

Full horizontal migration aperture in meters.

• Seismic magnitudes, moments, travel times, velocities, resolution, and energy depend on instrument correction, Earth model, phase picking, geometry, attenuation, radiation pattern, bandwidth, and calibration range. Magnitude scales are not universally interchangeable.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Compare independent measurements and models, retain units and analytical metadata, propagate uncertainty, and validate interpretations against logs, cores, maps, laboratory data, or field observations.

• Seismic Two Way Time Calculator

  Convert depth to seismic travel time: t = z / V for the one-way time and twice that for the zero-offset two-way time, with depth in meters and interval velocity in meters per second.

• Seismic NMO Correction Calculator

  Normal-moveout hyperbola t(x)^2 = t0^2 + x^2/V^2 for a horizontal reflector, with zero-offset time t0 in seconds, source-receiver offset x in meters and velocity in meters per second.

• Seismic Resolution Horizontal Fresnel Zone Calculator

  First Fresnel zone radius r = (V/2) sqrt(t0 / f) governing horizontal seismic resolution, with velocity in meters per second, zero-offset two-way time t0 in seconds and dominant frequency f in hertz.