Abstract

The results of numerical modeling of the influence of the main factors distorting the paleomagnetic record in sedimentary rocks are presented: signal averaging and inclination underestimation and estimation of the parameters of secular variations (their amplitude, the degree of elongation of the distribution of directions, and the direction of elongation of this distribution) recorded in sedimentary sections.As an example of the practical application of the results obtained on their basis, the prospects of the Honako-2 section, one of the best loess sections in Central Asia, are assessed for the possible discovery of records of geomagnetic excursions in this section. Numerical estimates are obtained for the probability of detecting excursions of different types in the paleomagnetic record of the upper levels of this section.

中文翻译：

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基于沉积剖面逐层研究结果的古地磁记录失真因素对古代长期地磁变化参数估计的影响

摘要

给出了沉积岩中扭曲古地磁记录的主要因素影响的数值模拟结果：信号平均和倾角低估和长期变化参数的估计（它们的幅度、方向分布的伸长程度和该分布的延伸方向）记录在沉积剖面中。作为在其基础上获得的结果的实际应用的一个例子，Honako-2剖面是中亚最好的黄土剖面之一，其前景被评估为本节可能发现的地磁偏移记录。获得了在该剖面上层古地磁记录中探测到不同类型偏移的概率的数值估计。