Stable downward continuation of airborne potential field geophysical data: an investigation of stabilizers family

IF 1.1 Q3 MINING & MINERAL PROCESSING
M. Azadi, M. Abedi, Gholam Hossein Norouzi Baghkameh
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引用次数: 1

Abstract

Attenuation of the signal received from sources causing anomalies and reduction of data resolution are the negative features of airborne measurements. Using a stable downward continuation method is a practical way to address these shortcomings. In this study, we investigated the efficiency of various stabilizers in achieving stable downward continued data. The purpose of this study is to select the most appropriate stabilizer(s) for this operation. We examined the various stabilizing functions by introducing them into the Tikhonov regularization problem. The results of research on synthetic airborne gravity and magnetic data showed that βL1 (the other definition of L1 norm) and SM (the smoothest model) stabilizers have the potential to be used in the stable implementation of the downward continuation method. These stabilizers performed better than the other in the three comparisons, including visual, quantitative (RMS error), and graphical comparisons. Also, by examining the airborne magnetic data related to the Esfordi district in Yazd province (Iran), it was found that in general the βL1 stabilizer is more suitable than the other stabilizing functions studied in this research.
航空势场地球物理数据的稳定向下延续:稳定剂族的调查
从源接收的信号衰减导致异常和数据分辨率降低是机载测量的负面特征。使用稳定的向下延拓方法是解决这些缺点的一种实用方法。在这项研究中,我们研究了各种稳定剂在实现稳定的向下连续数据方面的效率。本研究的目的是为该操作选择最合适的稳定器。我们通过将各种稳定函数引入Tikhonov正则化问题来检验它们。对合成机载重磁数据的研究结果表明,βL1(L1范数的另一个定义)和SM(最平滑的模型)稳定器具有稳定实现向下延拓方法的潜力。在包括视觉、定量(RMS误差)和图形比较在内的三个比较中,这些稳定剂的表现优于其他稳定剂。此外,通过检查与亚兹德省(伊朗)Esfordi区有关的航空磁数据,发现通常βL1稳定剂比本研究中研究的其他稳定功能更合适。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of Mining and Environment
Journal of Mining and Environment MINING & MINERAL PROCESSING-
CiteScore
1.90
自引率
25.00%
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