朝那黄土剖面黄土-古土壤磁性参数数据集（中更新世）

0.93~0.62Ma期间磁滞参数曲线的结构特征与深海氧同位素记录的中更新世气候转型结构十分相似，因此，岩石磁学参数记录的变化可能是黄土高原风尘堆积对中更新世气候转型事件的响应，其气候转型发生于0.93~0.62Ma。黄土高原此次气候转型事件除与全球冰量变化和太阳辐射的驱动有关之外，还可能与中更新世青藏高原急剧隆升而激发的亚洲内陆干旱化加剧，从而导致的沙漠形成与扩张有关。Between 0.93 and 0.62 Ma, the structural characteristics of the hysteresis parameter curves are highly consistent with those of the Mid-Pleistocene Transition (MPT) recorded in deep-sea oxygen isotope records. Thus, the variations in rock magnetic parameter records likely reflect the response of eolian deposits on the Loess Plateau to the Mid-Pleistocene climate transition event, which occurred between 0.93 and 0.62 Ma. In addition to being driven by changes in global ice volume and solar radiation, this climate transition event on the Loess Plateau may also be linked to intensified aridification in inland Asia triggered by the rapid uplift of the Tibetan Plateau during the Mid-Pleistocene, which subsequently led to the formation and expansion of deserts.

搜集汇总

背景与挑战

背景概述

该数据集聚焦于黄土高原朝那剖面（35°7’N、107°12’E）的黄土-古土壤磁性参数，时间范围为中更新世（约0.93~0.62Ma），属于古地理学领域，用于古气候重建。数据摘要显示，磁滞参数曲线与深海氧同位素记录的中更新世气候转型结构相似，表明该数据集记录了黄土高原风尘堆积对气候转型事件的响应，转型可能与全球冰量变化、太阳辐射驱动及青藏高原隆升导致的干旱化加剧有关。