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- W2185989314 abstract "Summary Airborne Electromagnetics is used in many countries as a major tool for groundwater management, and environmental management. In this paper we assess the effects that different levels of processing of Helicopter TEM data have on the resulting electrical models and then on the hydrogeological models. We use a SkyTEM dataset from in Denmark, acquired in 2008. We focus on different approaches in the processing of the raw data found in the industry, whilst inversion, which is necessary to show the effect in the model space, is undertaken in rather standard way. We show how the electrical models, and then the hydrogeology, change depending on the level of decoupling of artifacts, of lateral averaging, of late time noise assessment, and compare it with available borehole information. Each one of these processing steps alters the output, and therefore the derived models. With respect to e.g., under/overextimating the depth to bedrock by several tens of metres, or the absolute resistivities by hundreds of Ohm m, and therefore potentially assigning the wrong hydrogeological unit to a given electrical layer, the extra time, effort and monetary investment involved in accurate detailed processing is probably worthwhile." @default.
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- W2185989314 date "2011-01-01" @default.
- W2185989314 modified "2023-09-26" @default.
- W2185989314 title "Does Accurate Processing of Airborne EM Data Have an Impact on Derived Hydrogeological Units" @default.
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