What Is the Bouguer Slab & Free-Air Gravity Anomaly Calculator?
Gravity anomalies reveal subsurface geological structures, mineral deposits, magma chambers, and crustal thickness variations.
This calculator applies the Somigliana theoretical gravity ellipsoid formula, free-air height correction, and Bouguer slab reduction to raw gravimeter readings.
How Does the Bouguer Slab & Free-Air Gravity Anomaly Calculator Work?
The calculation evaluates user-provided measurements using recognized domain equations, converts between measurement units, and adjusts for real-world efficiency factors.
Bouguer Slab & Free-Air Gravity Anomaly Calculator Formula & Variables
The core mathematical equation utilized by this calculator is expressed as:
Applies standard Somigliana reference ellipsoid, +0.3086 mGal/m free-air elevation reduction, and 2πGρh rock slab mass correction.
How to Use the Bouguer Slab & Free-Air Gravity Anomaly Calculator
- Enter your primary measurements in the input fields above.
- Select your preferred units (e.g. metric or imperial) if applicable.
- Review or adjust operational assumptions such as field efficiency.
- Click Calculate to instantly generate the full results breakdown and visual chart.
- Use the Reset button at any time to clear the form and test a new scenario.
Step-by-Step Example Calculation
Mountain survey at 450m elevation, latitude 45°N, observed g = 981,200 mGal
Input Values:
Understanding Your Result
Your calculated result represents the realistic operational capacity or baseline output under the specified conditions. Comparing theoretical and effective outputs reveals the direct impact of turns, overlap, and practical downtime.
Factors That Affect the Result
Field terrain, operator experience, equipment maintenance, overlap margin, and weather conditions can significantly influence real-world output.
When Should You Use This Calculator?
Use this calculator whenever you need quick, verified estimates for job planning, budgeting, equipment sizing, or project timelines.
Assumptions & Limitations
- Geophysics
- Geodesy
- Earth Sciences
Frequently Asked Questions
Calculation Accuracy & Reference Note
This calculator implements verified, deterministic mathematical equations based on published standards. Results should be treated as professional engineering estimates; always verify critical operations with local equipment manuals and site inspections.