Terēan’s software & systems provide users with the ability to record and analyze surface waves, using both ambient and generated seismic signals, for increasing understanding of the subsurface. As part of our unique support program we are here to assist, anytime you need it.

Software & Systems

Our software.

Graph of shear-wave velocity vs. depth, showing velocity in feet per second on the horizontal axis and depth in feet on the vertical axis, with annotations "Vs100 = 1125 ft/s" and "NEHRP D."

VsSurf 1dS® Software

Real-time data QA in the field, ensuring you collect the best possible results. Generate 1D S-wave depth-velocity profiles using both passive and active seismic sources, commonly used to assess site class (Vs100/30) and determine subsurface layer depths. Reads both SEGY and SEG2 file formats. Automatically generates 1D reports.

Color contour map illustrating shear wave velocity versus depth, with a gradient from purple (lower velocity) to red (higher velocity). Depth is labeled in feet on the vertical axis, and velocity in ft/sec on the horizontal color scale.

VsSurf 2dS® Software

Offers all the capabilities of VsSurf 1dS, plus the ability to generate 2D S-wave depth-velocity profiles for a comprehensive understanding of subsurface conditions. It is commonly used to reveal lateral variations in subsurface layers, locate faults, map landslide planes, estimate liquefaction potential, determine S-wave rippability, and image depth to bedrock.

Your VsSurf® Software

Let us help you find the best VsSurf software for your project!

We offer both permanent and annual licenses. 

Permanent licenses include one year of training, support, and software updates.

Annual licenses include training, support, and software updates throughout the year with optional renewal. 

Our systems.

Seismograph equipment in a protective case with yellow panel and connectors.

ēDAQ™ 5-12 Software Bundle

Everything you need to complete shear-wave acquisition and is seamlessly compatible with VsSurf software. Ideal for making 1D S-wave depth-velocity profiles using passive and active seismic sources. Commonly used to calculate earthquake ground shaking potential per the International Building Code (IBC) and depth of subsurface layers.

  • (1) ēDAQ 5-12

  • (12) 4.5 Hz Geophones

  • (12) Geophone bases for placing on hard surfaces

  • (1) 12-channel cable

  • (1) Hammer Strike Plate

  • Software: VsSurf 1dS

Person wearing a yellow safety vest working on a laptop outdoors, with electronic equipment on the back of a truck. Scenic mountain landscape in the background under a blue sky with clouds.

ēDAQ™ 5-24 Software Bundle

Ideal for generating 2dS sections for a comprehensive view of your entire project! Let our team of geophysicists process your data for you to assist in evaluating liquefaction potential across your project site. Estimate rippability, excavation & overburden budgets. Constrain the location of faults & map landslide planes.

  • (1) ēDAQ 5-24

  • (24) 4.5 Hz Geophones

  • (24) Geophone bases for placing on hard surfaces

  • (2) 12-channel cables or (1) 24-channel cable

  • (1) Hammer Strike Plate

  • Software: VsSurf 2dS

Your System Bundle

Let us help you find the best System Bundle for your project!

Receive 1 year of personalized training, support, and software updates at no additional cost when you purchase a System Bundle.