SmartSeis SE Underground Seismic Imaging System

Seismic Products

The  SmartSeisTM SE is a new generation seismograph that brings together the latest  digital and computer technology to help you map the subsurface. The units can be  configured with either 12 or 24 channels.

The SmartSeisTM can be  used in a wide range of applications, including: depth-to-bedrock, rippability surveys,  ground water hydrology, foundation investigations, landslide studies, hazardous waste mitigation, fault location, stratigraphy, gravel detection, mineral exploration, aquifer tracing, landfill delineation, coal seam mapping, shear wave velocities for site response,  and surface wave analysis.

The user-friendly SmartSeisTM SE uses advanced data acquisition techniques so that high  quality data is automatic. Built-in data processing gives preliminary answers right in the  field. The SmartSeisTM has special circuitry that continuously looks at  the seismic signal and adjusts the amplifier gains to the optimum setting. Many surveys can employ just a sledgehammer as the source and sum sequential impacts to increase  effective depth penetration.
Pick  on-screen first arrivals with a full-sun visible 640x480 pixel liquid crystal display.  Selectable real-time DIGITAL filters in the SmartSeis can eliminate interference produced  from power lines, wind, and surface waves to significantly extend your depth range and reflection capabilities.
A paper copy of the record can be produced using the built-in thermal plotter. The data is  annotated with the acquisition parameters, line geometry, and even date and time for  correlation with field notes.

Features:
  • self-contained, weatherproof instrument with full sun visible LCD screen, built-in printer, PC and integrated analysis software
  • Automatic gain selection so you always get the best data
  • Signal enhancement for surveys lets you use a small source like a sledgehammer in noisy  areas
  • Pull-down menus for fast and easy setup and operation
  • Built-in noise monitor mode lets you see data quality is good before shooting
  • Real-time digital acquisition and display filters reduce noise from unwanted sources
  • Lightweight, low power and portable
  • 12 or 24 channels
  • Real-time data processing for quick results in the field (see below)

Seeing  what is underground with the SmartSeis is easy:

  • First arrivals (first breaks) can be picked  automatically right on the seismograph screen, with the ability to override the selection  that the computer has made.
  • Travel time curves of your shot are drawn so  that you can make sure that you have sufficient subsurface coverage.
  • Preliminary layer assignments are made by the seismograph, and can be edited by the operator

A velocity cross section is automatically generated directly on the seismograph by a version of SIPT, the popular refraction interpretation software from Rimrock Geophysics. The cross section is printed on the SmartSeis's built-in high-resolution thermal plotter. The complete version of the SIPT refraction interpretation software that runs on your office PC is also available from Geometrics. The full version accommodates multiple spreads, unique geometries and plots color cross sections.

Specifications:

Number of Channels:  12 or 24

Energy Sources:  Hammer, weight drop, or explosives

Record Length:  up to 24,000 samples.

Sample Interval:  Selectable among 31, 62, 125, 250,500 1000 and 2000 microseconds

Display:  High resolution 640x480 LCD, PC compatible. Visible in bright sunlight.

Noise Monitor:  Waterfall style moving trace, also shows channel continuity and geophone performance

A/D Conversion:  18-bit A/D, 32 bit result

Pretrigger Memory:  allows viewing of data before trigger.

Gain Control:  Automatic, set by continuously measuring two stage instantaneous floating point amplifier. True amplitude is preserved and can be used for ground motion studies.

Data Display:  Wiggle trace, shaded or variable are, trace clipping, automatic gain control, fixed gain and post acquisition filtering included.

Plotter:  Built-in four inch (11 cm) wide thermal printer.

Interfaces:  RS-232, video, keyboard and printer.

Pretrigger Delay:  Allows viewing of data before trigger for troubleshooting and monitoring .0 to 9999 ms in 1 ms increments

Data Storage:  sufficient for several days recording. Includes both floppy and hard disk storage.

Filters and Noise Reduction Technology:

  • 32-bit stacking: Reduces contributions from random noise.
  • Memory Freeze: Allows selective stacking of weak channels.
  • Low cut filtering: Reduces the effects of traffic noise.
  • High cut filtering: Removes wind noise. Filters can be run in real-time after data is collected, making costly repeated shots unnecessary.
    • Low Cut:  25, 35, 50, 70, 100, 140, 200, 280, and 400 Hz
    • High cut: 250, 500, and 1000 Hz.
    • Power Line Notch: 50, 60, 150, and 180 Hz.
    • Anti-alias: Automatic
    • Custom Filter Frequencies Available

In-field Processing: 

  • Automatic first arrival picking with manual override.
  • On-screen travel time plots.
  • Automatic layer assignment with manual override.
  • Automatic calculation of depths below shots and geophones. Program ray traces the data and indicates where data quality might be poor. Prints table of all data, depth calculations and a quality control plot showing questionable data. Report ready cross section with rock velocities printed last. Analysis and interpretation software from Rimrock Geophysics.

 

Environmental:  Operates from -5C to 40C, boots from 5C to 40C.

Mating Connectors:  NK-27-21C, 12 channels per connector.