Stable and radiogenic isotope record for sediments cores from the Southern Indian Ocean@en

Here we present reconstructions of water residence times (depicted as ΔΔ14C and δ13C) for the last 32,000 years on sediment records from the Kerguelen Plateau and the Conrad Rise (~570-2500 m water depth), along with simulated changes in ocean stratification from a transient climate model experiment. Our data indicate that Circumpolar Deep Waters in the Indian Ocean were part of the glacial carbon pool.本研究重建了过去32000年以来，凯尔盖朗海台（Kerguelen Plateau）与康拉德海隆（Conrad Rise）海域（水深约570~2500米）沉积物记录中的水停留时间（以ΔΔ¹⁴C和δ¹³C表征），并附带了一项瞬变气候模式试验模拟得到的海洋层结变化结果。本研究数据表明，印度洋海域的环极深层水（Circumpolar Deep Waters）曾属于冰期碳库的组成部分。