Archeomagnetic records are an important source of information on the past behavior of the geomagnetic field. Frequently, however, coeval archeomagnetic intensity (archeointensity) datasets from nearby locations display significant discrepancies, hampering precise reconstruction of high‐resolution secular variation curve. This is the case for the time interval between the later phase of the Early Bronze and the early phase of the Late Bronze Ages (23rd–15th centuries BCE) in the Levant and Mesopotamia. We address the problem by cross‐correlating archeointensity datasets from four major multilayered archeological sites in the southern Levant (Hazor and Megiddo), northern Levant (Ebla), and western Upper Mesopotamia (Mari). We report new archeointensity data, obtained using the Thellier‐IZZI‐MagIC and the Triaxe methods, from six strata at Hazor and four radiocarbon‐dated strata at Megiddo. From 39 pottery fragments, 199 specimens passed our selection criteria, from which we calculated the mean archeointensity for each stratum. To strengthen the comparison of these data with previously published data from Mari and Ebla, obtained using the Triaxe method, we conducted a blind test of the methods that resulted in indistinguishable results or a difference of less than 1 μT. The synchronized compilation, constrained by radiocarbon data from Megiddo, displays a V‐shaped pattern with a prominent minimum of at least 200 years centered around the 18th century BCE. The study highlights the importance of stacking archeomagnetic data obtained by different archeointensity methods only after cross‐testing the methods and ensuring that archeological samples were dated in a consistent manner.

中文翻译：

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公元前23至15世纪黎凡特同步地磁场强度记录：按年代和方法论的意义

地磁记录是有关地磁场过去行为的重要信息来源。但是，来自附近位置的同时代古地磁强度（archointensity）数据集经常会显示出明显的差异，从而妨碍了高分辨率长期变化曲线的精确重建。在黎凡特和美索不达米亚，早期青铜后期和青铜时代晚期（公元前23至15世纪）之间的时间间隔就是这种情况。我们通过互相关来自黎凡特南部（Hazor和Megiddo），黎凡特北部（Ebla）和西部上美索不达米亚（马里）的四个主要的多层考古现场的考古强度数据集来解决该问题。我们报告了使用Thellier-IZZI-MagIC和Triaxe方法获得的新的考古强度数据，来自Hazor的六个地层和Megiddo的四个放射性碳含量的地层。从39个陶器碎片中，有199个标本通过了我们的选择标准，从中我们计算出每个地层的平均考古强度。为了加强这些数据与使用Triaxe方法获得的Mari和Ebla先前发布的数据的比较，我们对导致无法区分的结果或差异小于1μT的方法进行了盲法测试。同步编译受米吉多（Megiddo）的放射性碳数据约束，显示出一个V形图案，其特征是至少以公元前18世纪为中心至少200年。