Groundwatch PH

Gravity and Microgravity Surveys

Gravity Survey Methods

Groundwatch uses gravity methods for cavity indication, structural mapping, and integration with resistivity or seismic investigations.

Definition

What this method is

Gravity surveys detect spatial changes in subsurface density by measuring small variations in gravitational response.

Groundwatch uses gravity methods for cavity indication, structural mapping, and integration with resistivity or seismic investigations.

How It Works

From field measurement to interpreted model

  1. 1High-precision gravity readings are acquired at planned stations.
  2. 2Terrain and elevation corrections are applied during processing.
  3. 3Residual anomalies are interpreted against geology and project objectives.

When to Use

Best-fit conditions for this method

  • Cavity and void indication studies
  • Deep structural baseline mapping
  • Integrated subsurface risk programs

What It Can Help Identify

Subsurface features and signals

  • Density-contrast anomalies
  • Potential cavity or karst indicators
  • Regional structural boundaries

Deliverables

What you receive

  • Station and correction summary
  • Residual anomaly maps
  • Interpretation report

Typical Outputs

What the data looks like

  • Anomaly contour maps
  • Target zones
  • Integration notes

Applications

Common applications in the Philippines

Mining and exploration support

Infrastructure hazard baseline mapping

Integrated geohazard studies

Method Limitations

What this method cannot do alone

  • Signals are subtle and sensitive to station quality and terrain correction.
  • Gravity interpretation should be correlated with direct investigation methods.

Geophysical results are interpreted models based on measured physical property contrasts. Results should be correlated with boreholes, test pits, drilling, geological mapping, laboratory data, or other direct investigation methods where required.

Related Services

Methods and applications that work together

FAQs

Frequently Asked Questions

Is gravity suitable for small shallow targets?

It can be challenging for very small targets; method suitability is assessed during project scoping.

Can gravity detect cavities directly?

Gravity indicates density anomalies that may correspond to cavities, but confirmation requires integrated interpretation and validation.

Get in touch

Scope a gravity survey

Provide site access details and investigation depth goals so we can evaluate gravity method suitability.

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