The seismic reflection method relies on inducing a seismic wave into the seabed and recording the waves that are reflected from sub-surface layers. Seismic reflection is ideal for mapping geology at deeps exceeding 50 m.

Typical applications of seismic reflection include:

  • Bedrock profiling and locating of faults and fracture zones;
  • Determining the thickness of overburden layers;
  • Identifying sub-vertical geological contacts.

Deep seismic reflection surveying is the most advanced technique in geophysics today, thanks to its application on a huge scale for oil and gas exploration.

This technique does, however, have other applications on a smaller scale, such as for civil engineering project site investigation.

For shallow depths, the theory is identical, but the equipment and parameters are adjusted to provide a higher resolution at shallow depths.

For more information, please contact our Marine Survey Team.

Marine techniques reflection

Seismic energy is generated at the near surface. The returned energy is recorded by a streamer of hydrophones.  Reflection of the energy is caused by contrasts in acoustic impedance between the various strata.

Data processing is a sequence of operations carried out usually on powerful computers using specialized software.

The final product is a 2-D or 3-D dataset of seismic reflectors, which can then be correlated to specific geological interfaces.

For more information, please contact our Marine Survey Team.