Integrated geology and geophysics solutions for geotechnical engineering

Reliable subsurface data for engineering decisions.

What sets us apart

Geophysics and drilling data integrated in a single workflow.

Instead of delivering isolated tests, we combine geophysical methods with the project’s geotechnical data. We plan each campaign from the information already available for the site, apply the right method for each objective and deliver a continuous picture of the subsurface. Our in-house team works across Brazil, onshore and in shallow waters.

Integrated methods
Seismic, electrical, electromagnetic and marine methods in a single campaign.

Targeted campaigns
Existing data guides where and how to investigate before mobilization.

From field to interpretation
Acquisition, processing and interpretation by the same technical team.

3D ground model
With SpectraGround 3D, results are organized on our own platform.

SpectraGeo technician lowering a seismic probe into a borehole

Services

Non-invasive methods, selected for each objective

Geophone line for a seismic survey

Seismic methods

MASW, crosshole, downhole, reflection and refraction. Vp, Vs, stiffness and layer thickness.

Vertical electrical sounding in the field

Electrical methods

VES, electrical profiling, IP and earth resistance testing. Resistivity, grounding, faults and cavities.

SpectraGeo technician running GPR with RTK GPS by a highway

GPR

Ground-penetrating radar to locate buried utilities, pipes and structures.

Bathymetry and side-scan sonar survey on board

Marine geophysics

Shallow seismic, bathymetry and side-scan sonar in shallow waters.

SpectraGround 3D

See beyond the borehole

Boreholes investigate points. MASW investigates profiles. SpectraGround 3D integrates 2D MASW, HVSR and geotechnical tests to investigate volumes, with project data organized on our own platform, already in operation.

01Map

02Constrain

03Integrate

04Model

Industries

Subsurface investigation for infrastructure

SpectraGeo geophone line on a construction site, drilling rig in the background

Power transmission
Grounding studies to NBR 7117-1, MASW+ for tower foundations and GPR along the route.

Construction and real estate
MASW+ and DCP for foundations, GPR for buried services, crosshole and downhole on larger projects.

Ports, offshore and renewables
Shallow seismic, bathymetry and sonar. MASW and resistivity at wind and solar farms.

Mining and steel
Slopes and foundations for large structures, with integrated seismic and electrical methods.

Case studies and publications

Applied knowledge from the field

Case study · Pulp and paper

Soil compaction verification with SPT, DMT and MASW+

The contract required 6 m; the integrated campaign showed effective compaction only to about 3 m.

Technical article

MASW and SPT: when geophysics complements the borehole

What each test tells you and why to use them together for foundation design.

Research and development

Stiffness and strength: what the G₀/N ratio reveals about soil

How combining Vs and SPT helps identify cemented soils and refine settlement estimates.

Let’s talk about your project

Tell us the objective, the site and the project stage. We’ll recommend the most suitable method and scope.