Quantitative knowledge about the burial of sedimentary components at the seafloor has wide‐ranging implications in ocean science, from global climate to continental weathering. The use of ²³⁰Th‐normalized fluxes reduces uncertainties that many prior studies faced by accounting for the effects of sediment redistribution by bottom currents and minimizing the impact of age model uncertainty. Here we employ a recently compiled global data set of ²³⁰Th‐normalized fluxes with an updated database of seafloor surface sediment composition to derive atlases of the deep‐sea burial flux of calcium carbonate, biogenic opal, total organic carbon (TOC), nonbiogenic material, iron, mercury, and excess barium (Ba_xs). The spatial patterns of major component burial are mainly consistent with prior work, but the new quantitative estimates allow evaluations of deep‐sea budgets. Our integrated deep‐sea burial fluxes are 136 Tg C/yr CaCO₃, 153 Tg Si/yr opal, 20Tg C/yr TOC, 220 Mg Hg/yr, and 2.6 Tg Ba_xs/yr. This opal flux is roughly a factor of 2 increase over previous estimates, with important implications for the global Si cycle. Sedimentary Fe fluxes reflect a mixture of sources including lithogenic material, hydrothermal inputs and authigenic phases. The fluxes of some commonly used paleo‐productivity proxies (TOC, biogenic opal, and Ba_xs) are not well‐correlated geographically with satellite‐based productivity estimates. Our new compilation of sedimentary fluxes provides detailed regional and global information, which will help refine the understanding of sediment preservation.

中文翻译：

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深海全球海洋沉积物组成和埋藏通量

从全球气候到大陆风化，有关海底沉积成分埋藏的定量知识对海洋科学具有广泛的影响。采用²³⁰钍归一化的通量减少不确定性，许多以前的研究中所面临的占沉积物再分配由底流的影响，年龄最小化模型不确定性的影响。在这里，我们采用了最近编辑的²³⁰ Th归一化通量的全球数据集以及海底表层沉积物成分的更新数据库，以得出碳酸钙，生物蛋白石，总有机碳（TOC），非生物材料的深海埋藏通量地图集。 ，铁，汞和过量钡（Ba _xs）。主要部分埋葬的空间格局主要与先前的工作一致，但是新的定量估计可以评估深海预算。我们的集成深海埋藏通量是Tg为136℃/年的CaCO ₃，Tg为153的Si /年的蛋白石，20Tg C /年TOC，220mg的汞/年，和2.6的Tg的Ba _XS /年。该蛋白石通量比以前的估计值大约增加了2倍，这对全球Si周期具有重要意义。沉积的铁通量反映了各种来源的混合，包括成岩物质，热液输入物和自生相。一些常用的古生产力代理（TOC，生物蛋白石和Ba _xs）的通量）与基于卫星的生产率估算在地理上没有很好的相关性。我们对沉积通量的最新汇编提供了详细的区域和全球信息，这将有助于加深对沉积物保存的理解。