ABEM Walktem geological near-surface toolABEM WalkTEM provides an intuitive user interface combined with stunning performance, making it a powerful tool for surveys in the geological near-surface.
Applications include groundwater and mineral exploration and environmental investigations. The Transient Electromagnetic (TEM) method TEM offers good penetration of conductive overburden and is increasingly popular for hydrogeological purposes as well as general geological mapping and mineral exploration. Since there is no requirement for galvanic ground contact, data can be collected in high resistivity surficial zones and in areas covered by ice or exposed rock. Advanced TEM made easy ABEM WalkTEM is derived from the airborne SkyTEM helicopter system, sharing the technology. While SkyTEM covers large areas, ABEM WalkTEM offers more accurate resolution of fine details in geology. With a set of predesigned protocols, ABEM WalkTEM quickly switches between different tasks. A variety of transmitter loop sizes provides good scalability for the project at hand. Data collection is complete in a few minutes With its unique acquisition technology, ABEM WalkTEM accurately resolves a wider span of signals, covering both deep and more near-surface data in one go, greatly improving field survey efficiency. A high level of integration means less carrying and setup. Powerful on-board processing software takes the guessing out of field surveys as a resistivity layer model can be produced within a minute after a measurement has been conducted.
System configuration
The ABEM WalkTEM system integrates a high current transmitter and a dual channel wide bandwidth receiver in one rugged box, which also contains an integrated PC and dual internal batteries. The system is complete with two models of low noise receiver coils; one optimized for high resolution shallow soundings and the other with a larger effective area, suitable for deeper soundings. Dual moment measuring technique Using dual moment transmission the ABEM WalkTEM automatically alternates between maximum and reduced current pulses, thus utilizing the benefits from both high energy fields as well as fast current pulse turn-off. The advantage is high resolution response from shallow to maximum depth. With its unique acquisition technology, ABEM WalkTEM accurately resolves a wider span of signals, covering both deep and more near-surface data in one go, greatly improving field survey efficiency. Processing and visualization Data processing into a layer model can be done directly on site, using the on-board ViewTEM software. Further processing and visualization can be done with ViewTEM PC version and Aarhus Workbench. Connectivity A wide range of connectivity, such as GPS, Ethernet and USB, is available, making it possible to take measurements without being close to the instrument, and for our support team to conduct upgrades, support and troubleshooting remotely. 
ABEM walktem ADVANTAGES
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