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Science:罗马城市水管系统为维苏威火山喷发留下记录

摘要 : 罗马帝国的铅质水管将水从几公里长的水道(如上图)分配到整个城市。而根据一项新的研究,它们还干了一件别的了不起的事:它们为所服务的城市创造了一份历史记录。

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罗马帝国的铅质水管将水从几公里长的水道(如上图)分配到整个城市。而根据一项新的研究,它们还干了一件别的了不起的事:它们为所服务的城市创造了一份历史记录。随着水流经由管道进入港口,它一路留下了铅的痕迹,最终沉淀入港口沉积物中。现在,研究人员可以利用这些沉积物的芯来了解古罗马人切换输水系统的时间——取决于铅矿石开采的位置,铅原子产生不同的重量变化,根据这些铅原子的比例,研究人员得以进一步分析。对来自意大利那不勒斯港的沉积物进行研究之后,科学家们发现,公元79年的铅沉积物出现了一个突然转变,与附近的维苏威火山著名的火山喷发时间相符。火山灰可能堵塞了管道,或者地面运动可能破坏了管道,迫使罗马人用不同的来源的铅来取代这些管道,据《美国国家科学院院刊》今天发表的一项研究所述。沉积物还揭示,随着时间的推移,越来越多的管网来自远离那不勒斯的铅源。这表明将水运到各个建筑的铅管网络一直在扩张,但这个过程到公元5世纪就停止了,当时这个地区的水道因为经济崩溃等问题就停止了运转。

原文链接:

Roman plumbing wrote a record of Mount Vesuvius’s eruption

原文摘要:

The lead pipes of the Roman Empire distributed water from kilometers-long aqueducts (like the one above) all throughout their cities. And they did something else remarkable, too, according to a new study: They created a historical record of the cities they served. As water flowed through pipes and into harbors, it carried traces of lead, which eventually settled into harbor sediments. Researchers can now use cores of these sediments to make out when the ancient Romans switched their water delivery systems, taking advantage of the fact that the proportion of lead atoms with different weights changes depending on wher the lead ore was mined. Studying sediments from the harbor of Naples, Italy, scientists found a sudden shift in sediment lead around 79 C.E., coinciding with the famous eruption of nearby Mount Vesuvius. Volcanic ash could have clogged the pipes, or ground motion could have damaged them, forcing the Romans to replac them with lead from a different source, according to a study published today in the Proceedings of the National Academy of Sciences. The sediments also revealed that over time, more and more of the pipe network came from sources distant from Naples. That suggests an expansion of the network of lead pipes that brought water to individual buildings—but only until the 5th century C.E., when economic collapse and other troubles put the region’s aqueduct out of commission.

来源: Science 浏览次数:0

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