The sledge hammer is used to generate seismic waves (P- or S-waves) at the surface. A piezotrigger element is attached to the hammer. The output piezo signal is transformed to a TTL pulse by a small box to provide an exact time break to the seismograph.
It is a suitable source for shallow downhole surveys up to a depth of 100 m.
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Length: |
1000 mm |
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Weight: |
5 kg |
The vibrator source ElViS VII is used to generate P- or S-wave sweep signals. The source consists of a moving mass driven by a cascaded linear motor. The source is fully cased. An adjustable pneumatic suspension ensures a maximum release of seismic energy under different surface conditions. The source is most suitable for refection seismic surveys on paved roads and for urban areas. A wheelbarrow allows the movement of the source along the seismic line.
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Design: |
Geosym GmbH |
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Generated wave types: |
P/S |
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Power supply: |
12 V DC |
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Drive system: |
Cascaded linear motor |
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Peak force: |
Approx. 1100 N |
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Frequency range (P and SH): |
20 - 240 Hz |
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Investigation depth (P): |
Up to 300 m and more (depending on geology) |
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Investigation depth (SH): |
Up to 200 m and more (depending on geology) |
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Source weight: |
35 kg |
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Total weight: |
130 kg |