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Manufacturer of geophysical resistivity and IP imaging systems
2121 Geoscience Dr., Austin, TX 78726, USA
phone: +1(512)335-3338, fax: +1(512)258-9958
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Amistad dam Pellissippi StingCave Hyderabad Horizontal Marine survey Korean tunnel survey |
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SuperSting R8/IP SuperSting R1/IP SuperSting Marine SuperSting Remote MiniSting Swift EarthImager 1D EarthImager 2D EarthImager 3D |
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SuperSting R8 Marine
Marine Logging System
AGI has developed a new marine option of the famous SuperSting. The system comprises the SuperSting Marine, the Marine Log Manager software and an electrode towing cable.
The SuperSting Marine continuously records and stores data from a GPS receiver. Current is injected every 3 seconds and 8 apparent resistivity values representing 8 depth levels are read for each current injection. Depth of penetration depends on length of the cable and array type. Typically you will see down to aproximately 20% of the electrode spread length.
The Marine Log Manager software allows you to edit the recorded data, plot the boat track and the resistivity data on an imported map image and to format the data for the inversion software. Electrode positions can also be converted to UTM coordinates.
The electrode cable features graphite electrodes (US Patent 6,674,286), a kevlar strength member and water block. The advantage of the graphite electrodes is that they do not corrode as currrent is passed through them. Regular metal electrodes quickly corrodes in water environment due to electrolysis processes. The water block prevents water from entering the cable in case of a cut in the outer jacket.
Below is an example from an actual marine survey on a fresh water lake. The red dashed line represents the bottom horizon as obtained from a map. Observe the accurate correspondence to the resistivity imaging inversion.
Key Benefits
- 8 channel simultaneous measure capability
- Short cycle times makes for dense data recording, almost 3 readings per second
- Extra high current for low resistance water operation, 2A in many cases
- Special cable for marine environments will not corrode to influence results
- GPS interface for accurate location of survey can use standard Garmin equipment
- Dataset management software with mapping capability
- Accurately handles electrode positions on meandering logging cable
- Conversion to UTM coordinates for presentation on standard USGS maps
Last modified: 2006-09-07 18:29:17 EDT
