Groundwatch PH

Seismic Surveys

PS Logging

It is used where projects need borehole-based velocity control for geotechnical studies, seismic design context, or model calibration.

Definition

What this method is

PS logging is a borehole seismic test that measures P-wave and S-wave travel behavior with depth to support velocity-based interpretation.

It is used where projects need borehole-based velocity control for geotechnical studies, seismic design context, or model calibration.

How It Works

From field measurement to interpreted model

  1. 1Borehole condition and target intervals are reviewed before field setup.
  2. 2Wave responses are recorded at planned depth stations for both P-wave and S-wave interpretation.
  3. 3Velocity-depth results are processed and reported for engineering and correlation workflows.

When to Use

Best-fit conditions for this method

  • Borehole geotechnical and seismic design support studies
  • Projects requiring direct depth-wise velocity control
  • Calibration of surface seismic interpretations

What It Can Help Identify

Subsurface features and signals

  • Depth-based P-wave and S-wave velocity trends
  • Stiffness variation and key transition intervals
  • Borehole constraints relevant to design interpretation

Deliverables

What you receive

  • PS logging velocity table and profile
  • Depth-interval interpretation summary
  • Correlation-ready report notes

Typical Outputs

What the data looks like

  • P-wave profile
  • S-wave profile
  • Depth correlation summary

Applications

Common applications in the Philippines

Infrastructure foundation studies

Seismic site response and classification support

Integrated seismic and borehole programs

Method Limitations

What this method cannot do alone

  • Requires suitable borehole access and logging conditions.
  • Depth coverage depends on borehole depth and integrity.
  • Interpretation should be integrated with geology and project context.

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 PS logging the same as a surface seismic survey?

No. PS logging is borehole-based and provides direct depth station measurements, while surface surveys infer profiles from surface acquisition.

What is needed before PS logging begins?

Borehole details, target depth intervals, and project objectives are needed to define the logging plan.

Get in touch

Request PS logging support

Share borehole details and target intervals so we can confirm field readiness and deliverables.

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