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GeoChirp II
GeoChirp II is a sub-bottom profiling
system for high resolution shallow geophysics, combining state of the art
electronics with standard proven technology. The "chirp" concept uses
advanced frequency modulation and digital signal processing techniques to
attain good penetration of the sub-bottom layers whilst achieving higher resolution
records than previously possible.
GeoChirp II offers even higher resolution
than the GeoPulse Profiler, at the expense of some reduction in overall penetration.
GeoChirp II is particularly effective in the near surface layers where the Chirp
technique eliminates ringing; this feature makes it ideal for use on pipeline
and cable route surveys.
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GeoPulse
Profiler & Pipeliner
The GeoPulse Sub-bottom Profiler is a tried and
tested, industry standard sub-bottom profiling system for shallow geophysics. It
is highly flexible allowing operation as either a hull mounted deep water system,
an "over-the side mount" system for small boat operations or as a towed system.
The GeoPulse Pipeliner
is a specialised variant of the GeoPulse Profiler designed to provide a
solution to the problem of detecting buried pipelines. It includes added
flexibility to allow users to select from a wider choice of frequencies.
The towfish transducer layout is configured to give the perfect acoustic
“footprint” for pipe detection.
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GeoChirp 3D
GeoChirp 3-D is the first commercially available
system capable of generating high resolution true 3-D sub bottom
data volumes for shallow water applications. Unlike pseudo
3-D systems, which use multiple 2-D slices of data and interpolation, the
true 3-D system offers decimetre resolution in all three dimensions down
to depths below sea bed of several tens of metres.
GeoChirp 3-D is the result of collaborative research between the
National Oceanographic Centre (NOC)
in
Southampton
and GeoAcoustics Ltd. The system is based
around the GeoChirp II Profiling System transmitter and transducers, and
uses a 2-D grid of receive elements fitted to a lightweight surface towed
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