Statistical analysis of Carl Blegen's pottery sequence using Correspondence Analysis (CA) suggests a gap of 100–200 years between his Troy III and IV periods. From the Manfred Korfmann excavations three stratigraphic sequences hitherto assigned to Troy IV and V appear to bridge it. This allocation is based on stratigraphic/architectural grounds and on the observable development in ceramic shapes and wares. Heinrich Schliemann's pottery sequence from 1870–1873 is also analysed by CA and found to compare well with Blegen's (with limited exceptions probably due to the larger scope of his excavations), but it does not exhibit the same gap. This suggests that during the ‘bridge’ period occupation shrank to the summit on the western end of the citadel mound. This ‘bridge’ period of seven or more building phases has a distinctive ceramic assemblage and may be called the Proto-IV period. It is broadly contemporary with Middle Helladic I, Beycesultan VIII–VI, Küllüoba II and the Tarsus Early Bronze to Middle Bronze transitional period. Careful re-evaluation of the radiocarbon evidence dates it to ca 2150–1990 cal. BC. Botanical and faunal evidence from the strata in question attests significantly drier climatic conditions which, together with the smaller size of the settlement, probably reflect the 4.2ka cal. BP climatic deterioration.

中文翻译：

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特洛伊可能出现的新青铜时代

使用对应分析 (CA) 对 Carl Blegen 的陶器序列进行的统计分析表明，他的 Troy III 和 IV 时期之间存在 100-200 年的差距。从 Manfred Korfmann 的发掘中，迄今为止分配给 Troy IV 和 V 的三个地层序列似乎将其连接起来。这种分配是基于地层/建筑基础以及陶瓷形状和器皿的可观察发展。CA 还对 Heinrich Schliemann 的 1870-1873 年陶器序列进行了分析，发现与 Blegen 的比较好（可能由于他的挖掘范围较大，例外情况有限），但没有表现出相同的差距。这表明在“桥梁”时期，占领缩小到城堡土墩西端的山顶。这个由七个或更多建筑阶段组成的“桥梁”时期具有独特的陶瓷组合，可称为 Proto-IV 时期。它与中古希腊 I、Beycesultan VIII–VI、Küllüoba II 和塔尔苏斯早期青铜器到中青铜器过渡时期大致同时代。对放射性碳证据的仔细重新评估可以追溯到大约 2150-1990 cal。公元前。来自相关地层的植物和动物证据证明气候条件明显干燥，再加上定居点的规模较小，可能反映了 4.2ka cal。BP 气候恶化。公元前。来自相关地层的植物和动物证据证明气候条件明显干燥，再加上定居点的规模较小，可能反映了 4.2ka cal。BP 气候恶化。公元前。来自相关地层的植物和动物证据证明气候条件明显干燥，再加上定居点的规模较小，可能反映了 4.2ka cal。BP 气候恶化。