与地磁场极性倒转类似,较短尺度的极性漂移事件同样记录了丰富的地球内部动力学过程信息.其发生的年代可通过同位素定年手段确定并具有全球可对比性,因此也可为全球气候记录的对比提供时间标记.Blake事件是晚更新世一次重要的地磁场漂移事件,它首次在印度洋和加勒比海沉积物中被检测到,随后的研究证实其具有全球性特征.厚层连续的黄土-古土壤序列是研究亚洲季风气候演化和地磁场变化的良好载体,但是Blake事件在我国黄土序列,尤其是六盘山东西两侧黄土地层中的记录差异明显,其在黄土中的记录特征、转换过程和持续时间至今仍存争议.本文综合比较了目前报导的有关中国黄土中Blake事件的古地磁学研究成果,通过进一步对比分析古地磁和宇宙成因核素10Be示踪Blake事件的新结果,探讨了黄土中Blake事件记录的空间差异和可能影响因素.同时建议未来应将10Be示踪与古地磁测试相结合,进一步加强针对黄土Blake事件的空间对比和极性漂移过程中黄土剩磁机理的研究,为认识地磁极性漂移事件的特征、规律以及将其作为标志物服务于黄土年代学和全球气候记录对比做出贡献. “,”The occurrence of short-lived geomagnetic excursion as well as geomagnetic reversal and their related field intensity variability have been related to the Earth's interior dynamo process. The age of the excursion can be determined from the relatively independent radionuclide isotope dating, and is considered as globally coherent, therefore the excursion also has the potential to provide the important age and stratigraphic mm'ker to synchronize the global climatic records. The Blake event, which was firstly defined by Smith and Foster (1969) on the basis of paleomagnetic studies on ~diments from the Indian Ocean and the Caribbean sea, is one of most typical geomagnetic excursions during the late Pleistocene. There have been enough independent paleomagnetic records to confirm the global nature of this excursion. Although the Chinese loess-paleosol sequence is a good archive both for the studies on Asian monsoon climate and the geomagnetic field excursion, but synthetic magnetostratigraphy studies have revealed the apparent spatial discrepancy records for the Blake event in Chinese Loess Plateau, especially in the loess section located in the west and east sides of the Liupan Mountains. It leaves the age and duration of the Blake event as well as its exact pattern of field variability and record feature in Chinese loess still debated. In this paper, most of the published paleomagnetic studies on the Blake event from Chinese loess are reviewed and preliminarily analyzed. In particular, the recent 10Be tracing record on the Blake event in Chinese loess is firstly compared with former geomagnetic study in details, to further clarify the progress and possible problem of the study on Blake event in loess at present. In addition, future cross-checking studies on Blake event in Chinese loess from 10Be tracing in conjunction with magnetic analysis methods, and the remanence acquisition machanism for loess during excursion process are. suggested to be focused on to improve our understandings on the Blake excursion be