Groundwatch PH

Electromagnetic and GPR Surveys

Electromagnetic Survey

This service supports rapid corridor scanning, utility detection, and target screening where electrical conductivity contrasts are meaningful.

Definition

What this method is

Electromagnetic survey methods measure conductivity-related responses to help map subsurface contrasts quickly and non-invasively.

This service supports rapid corridor scanning, utility detection, and target screening where electrical conductivity contrasts are meaningful.

How It Works

From field measurement to interpreted model

  1. 1Survey objectives are matched to suitable EM configurations such as FDEM, TDEM, or related approaches.
  2. 2Field acquisition captures conductivity-sensitive responses across lines or grids.
  3. 3Processed outputs are interpreted with site context to guide decisions and follow-up work.

When to Use

Best-fit conditions for this method

  • Utility and buried-object reconnaissance
  • Environmental and salinity-related conductivity mapping
  • Mining and groundwater screening requiring rapid coverage

What It Can Help Identify

Subsurface features and signals

  • Conductivity anomalies across project areas
  • Zones requiring higher-resolution follow-up methods
  • Potential constraints for excavation and development planning

Deliverables

What you receive

  • EM interpretation maps and sections
  • Acquisition summary and data quality notes
  • Follow-up method recommendations

Typical Outputs

What the data looks like

  • Conductivity map
  • Interpreted anomaly map
  • Priority follow-up targets

Applications

Common applications in the Philippines

Infrastructure and utility corridor surveys

Environmental baseline and remediation support

Mining and groundwater target screening

Method Limitations

What this method cannot do alone

  • Interpretation can be influenced by cultural noise and metallic infrastructure.
  • Method choice and depth reach vary by instrumentation and site condition.
  • Anomaly interpretation should be validated with complementary data where required.

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

What is the difference between EM survey and GPR?

EM surveys emphasize conductivity response over wider coverage, while GPR focuses on high-resolution shallow radar reflections.

Can electromagnetic surveys be used for utility detection?

Yes. EM methods can support utility reconnaissance, often alongside GPR and record review.

Get in touch

Request electromagnetic survey planning

Send your target depth and project objective so we can recommend the most suitable EM workflow.

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