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SIMILAR RATES OF MODERN AND LAST-GLACIAL OCEAN THERMOHALINE CIRCULATION INFERRED FROM RADIOCHEMICAL DATA

机译:放射化学数据推论的现代和末次海洋热盐环流的相似速率

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Today, the ocean thermohaline circulation transports half of the Pa-231 produced by radioactive decay in the Atlantic Ocean water column to the Southern Ocean. This export respectively imparts low and high Pa-231/Th-230 ratios to the surface sediments of these oceans. Ocean sediments from the Last Glacial Maximum bear a similar isotopic fingerprint, implying that advection of North Atlantic Deep/Intermediate Water into the Circumpolar Deep Water of the Southern Ocean occurred at a similar-or slightly higher-rate during the last glacial period. [References: 53]
机译:今天,海洋热盐循环将大西洋水柱中放射性衰变产生的Pa-231的一半运输到南大洋。这种出口分别赋予这些海洋表层沉积物低或高的Pa-231 / Th-230比。最后一次冰期末期的海洋沉积物具有类似的同位素指纹,这表明在最后一次冰期期间,北大西洋深水/中间水向南大洋的极地深水的平流发生率相近或略高。 [参考:53]

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