Comment on 鈥淭he application of CCR and GPR to characterize ice conditions at Parsons Lake, Northwest Territories鈥?by Angelopoulos et al.

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• 作者：Greg A. Oldenborger
• 关键词：Capacitively-coupled resistivity ; Depth of investigation ; Geophysics ; Permafros
• 刊名：Cold Regions Science and Technology
• 出版年：April, 2014
• 年：2014
• 卷：100
• 期：Complete
• 页码：68-70
• 全文大小：498 K

文摘

As part of a permafrost characterization study using capacitively-coupled resistivity data, Angelopoulos et al. (2013) suggest a methodology for selecting the inversion damping factor based on the depth of investigation. I argue that the suggested methodology conflicts with the discrepancy principle which states that the damping factor should be chosen based on a target misfit. Furthermore, a misfit-based selection of the damping factor is required for the depth of investigation to provide a reasonable measure of model resolution in the context of noisy data.