Gravity Anomaly Bouguer Calculator
Land Bouguer anomaly in milligal: g_obs - g_ref + 0.3086 h - 2 pi G rho h, with elevation h in meters and reduction density rho in kilograms per cubic meter (default 2670 kg/m^3).
Description
Land Bouguer anomaly in milligal: g_obs - g_ref + 0.3086 h - 2 pi G rho h, with elevation h in meters and reduction density rho in kilograms per cubic meter (default 2670 kg/m^3).
Gravity Anomaly Bouguer Calculator: Land Bouguer anomaly in milligal: g_obs - g_ref + 0.3086 h - 2 pi G rho h, with elevation h in meters and reduction density rho in kilograms per cubic meter (default 2670 kg/m^3).
When to use Gravity Anomaly Bouguer
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.
- g obs
- Observed absolute gravity at the station in milligal.
- Elevation
- Station elevation above the datum in meters.
- g ref
- Theoretical (normal) gravity at the station latitude and datum in milligal.
- Density
- Bouguer reduction density in kilograms per cubic meter.
How Gravity Anomaly Bouguer works
Land Bouguer anomaly in milligal: g_obs - g_ref + 0.3086 h - 2 pi G rho h, with elevation h in meters and reduction density rho in kilograms per cubic meter (default 2670 kg/m^3). 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
- Bouguer anomaly
- Bouguer anomaly in milligal.
- Free-air correction
- Free-air correction 0.3086 h in milligal.
- Bouguer correction
- Infinite-slab Bouguer correction 2 pi G rho h in milligal.
Limitations and assumptions
- Gravity, magnetic, flexural, and subsidence interpretations are non-unique and depend on datum, corrections, density or susceptibility contrasts, regional removal, geometry, elastic assumptions, and noise. A corrected anomaly is not a unique subsurface model.
- 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.
Alternative or Complementary approaches
Compare independent measurements and models, retain units and analytical metadata, propagate uncertainty, and validate interpretations against logs, cores, maps, laboratory data, or field observations.
References
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Geophysics — Wikipedia contributors
Similar or alternative tools
- Gravity Anomaly Free Air Calculator
Land free-air anomaly in milligal: g_obs - g_ref + 0.3086 h with station elevation h in meters and the standard free-air gradient of 0.3086 milligal per meter.
- Seismic Acoustic Impedance Calculator
Acoustic impedance Z = rho Vp from P-wave velocity in meters per second and bulk density in kilograms per cubic meter, returned in pascal seconds per meter.
- Well Log Porosity Density Calculator
Density-log porosity phi_D = (rho_ma - rho_b) / (rho_ma - rho_f) from bulk, matrix and pore-fluid densities in kilograms per cubic meter; the standard formation-density porosity relation.