// multi-utility computation suite · offline · instant · precise
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sci.Bouguer-anomaly-gravity Calculator
Calculates the Bouguer gravity anomaly by correcting free-air anomaly for the gravitational attraction of the rock slab between measurement elevation and sea level. Bouguer anomaly is negative over mountains (mass below slab exceeds average) and used to map crustal thickness variations.
Inputs
G Obs Mgal
Reference formula or conversion factor shown for context.
G Wgs84 Mgal
Reference formula or conversion factor shown for context.
Elev M
Reference formula or conversion factor shown for context.
Rho Kg M3
Mass per unit volume (kg/m³). Water: 1,000. Air: 1.225. Steel: 7,850. Affects buoyancy, flow, and structural loads.
Results
free-air anomaly Δg_FA (mGal)
Sample size or count used in the calculation.
Bouguer anomaly Δg_B (mGal)
Sample size or count used in the calculation.
free-air correction FAC (mGal)
Sample size or count used in the calculation.
Bouguer correction BC (mGal)
Sample size or count used in the calculation.
FAC = 0.3086·h; BC = 0.04193·ρ·h/1000
Reference formula or conversion factor shown for context.
interpretation
Qualitative summary of what the computed numbers mean in practical terms.