黄土高原风尘沉积序列厚度大、地层连续,是高分辨率古地磁研究和古气候研究的理想材料.然而,缺少精确年龄控制点制约了黄土古气候信息的区域对比和海陆对比研究.地磁极性漂移是地球磁场长期变化过程中的基本行为之一,全球同步性使其成为古气候研究可靠的年龄控制点.布容正极性时记录了多次极性漂移事件,为高分辨率黄土古气候学提供的新的途径.通过回顾近年来的研究成果可知,黄土沉积物广泛记录了Laschamp和Blake地磁极性漂移事件,且部分剖面中存在Mono Lake事件的报道.此外尚未明确限定的倾角变负波动不断提出,极大地拓展了黄土沉积物极性漂移事件研究的深度和广度.然而,部分高沉积速率黄土剖面存在极性事件缺失现象对黄土沉积物可以稳定记录地磁极性漂移事件提出了质疑.目前对这一现象的解释有剩磁获得机制、Lock-in效应、沉积间断和气候响应等.然而,热退磁可有效去除化学剩磁(CRM)的影响,与CRM密切相关的剩磁获得机制无法解释相近区域内极性事件记录的差异.黄土沉积物较浅的Lock-in效应否定了其会普遍引起极性事件记录的缺失.黄土高原内部低沉积速率(小于10 cm/Ka)地区千年尺度极性事件和地磁场长期变化的记录否定了黄土沉积存在千年尺度的沉积间断.本文通过分析已有研究成果,认为极性漂移期间地磁场稳定性较差,导致磁性颗粒记录的磁场信息存在差异,可能是极性事件记录缺失的主要原因. The dust deposition sequence in the Loess Plateau is thick and continuous in formation, which is an ideal material for the study of paleomagnetic and paleoclimate research in high resolution. However, the lack of precise age control points restricts the regional contrast and the comparative study of paleoclimate information of the Loess Plateau. Drift is one of the basic behaviors in the long-term changes of the Earth’s magnetic field, which makes it a reliable age-control point in paleoclimate research.During the positive polarity of cloths, many polar drift events are recorded, By reviewing the recent research results, it is known that loess sediments have extensively recorded the geomagnetic polar drift events of Laschamp and Blake, and the Mono Lake events have been reported in some sections. In addition, However, the lack of polar events in some loess sections with high deposition rate has raised questions about the stable record of geomagnetic polarity drift in loess sediments The current explanations for this phenomenon include residual magnetism acquisition mechanism, Lock-in effect, sedimentary discontinuities and Etc. However, thermal demagnetization can effectively remove the influence of chemical remanence (CRM), and the remanence acquisition mechanism closely related to CRM can not explain the difference of polar event records in similar regions. The effect negates the omission of a record of its polar events in general. Records of long-term changes in the millennium-scale polar events and the geomagnetic field at low deposition rates (less than 10 cm / Ka) in the Loess Plateau negate the existence of sedimentary intervals of thousands of years on loess sediments In this paper, by analyzing the existing research results, it is considered that the stability of geomagnetic field during the polar drift is poor, which leads to the difference of magnetic field information recorded by the magnetic particles, which may be the main reason for the lack of polar event record.