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首页> 外文期刊>Journal of Paleolimnology >Late Holocene palaeoenvironmental evolution of the Roman harbour of Portus, Italy
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Late Holocene palaeoenvironmental evolution of the Roman harbour of Portus, Italy

机译：意大利Portus罗马港的晚全新世古环境演化

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摘要

We used two sediment cores from the ancient harbour of Rome (Italy) for palaeoenvironmental reconstruction. The imperial harbour of Rome and its town, Portus, were constructed in the Tiber Delta area. Today, they are ~3 km from the coast, close to Leonardo da Vinci International Airport. The port was excavated during the reign of Emperor Claudius, inaugurated by Nero in 64 AD, and substantially enlarged under Emperor Trajan. This paper focuses on analyses of ostracods in sediment cores from the harbour and provides insights into the palaeoenvironmental evolution of the harbour water bodies. Pollen data complement this ostracod-based reconstruction, providing information about the vegetation around the port. One core (PTS13) was taken from the dock area (darsena) excavated at the time of Claudius. The second core (PTS5) was collected from the Trasverso Channel (Canale Trasverso), excavated after the port inauguration and later dredged during the fourth century AD because it had filled in with silt. Radiocarbon, archaeological and pollen data indicate the two cores overlap in time slightly, or perhaps not at all, the core from the dock site (PTS13) containing the older record. Ostracods recovered from the two sites represent very different aquatic environments, driven in one case by the Tiber River input and in the other by “marine” harbour waters. Parallel study of ostracods and pollen in the cores reveals the impact of harbour management activities, which are linked to ship hull maintenance, as well as erosion and siltation in this coastal setting.
机译：我们使用了来自罗马（意大利）古港口的两个沉积岩心进行古环境重建。在台伯河三角洲地区建造了罗马帝国港口及其城镇Portus。今天，它们距离海岸约3公里，靠近莱昂纳多·达·芬奇国际机场。该港口是在克劳迪乌斯皇帝统治期间开挖的，在公元64年由尼禄（Nero）开创，并在图拉真皇帝（Emperor Trajan）的统治下大幅扩大。本文着重分析了港口沉积岩心中的成骨龙类，并对港口水体的古环境演化提供了见识。花粉数据补充了这种基于纲的重建，提供了有关港口周围植被的信息。从克劳迪乌斯（Claudius）时出土的码头区（darsena）取了一个岩心（PTS13）。第二个岩心（PTS5）是从特拉弗索海峡（Canale Trasverso）收集的，在港口就职典礼后被挖掘出来，后来在公元四世纪被疏dr，因为它充满了淤泥。放射性碳，考古学和花粉数据表明，这两个岩心在时间上略有重叠，或者根本不重叠，这是包含较旧记录的船坞站点（PTS13）的岩心。从这两个地点回收的兽脚代表了截然不同的水生环境，一种情况是由台伯河河输入的，另一种情况是由“海洋”港口的水驱动的。对核心中的兽脚类和花粉的平行研究揭示了港口管理活动的影响，这些活动与船体维护，沿海地区的侵蚀和淤积有关。

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