Bulk sediment geochemistry of Okhotsk Sea surface sediments@en

The Sea of Okhotsk in the northwestern Pacific between Sakhalin, Siberia, Kamtchakta and the Kuril Island Arc is currently influenced by different sedimentation processes. Regionally varying terrigenous fluxes and nutrient inputs, a seasonally varying sea ice cover and a generally high marine productivity characterize the sediment composition and distribution. X-ray fluorescence analyses for the geochemical characterization of recent surface sediments were carried out as part of various BMBF funding measures (including the KOMEX and KALMAR joint projects). Lithogenic elements (e.g. Ti, Fe, Zr, K, Al) and productivity proxies (e.g. Ba/Al) provide information on the interplay between terrigenous input (e.g. wind-dust and river input, ice transport) and marine productivity. The data contains bulk sediment geochemical data of surface sediment samples (0-1 cm core depth) from the Sea of Okhotsk, recovered by multicorer. The data were generated by X-ray fluorescence analyses. The data can be used as a basis for further paleoceanographic studies.位于西北太平洋、介于萨哈林岛、西伯利亚、堪察加半岛与千岛群岛弧之间的鄂霍次克海，当前受到多种沉积作用过程的共同影响。区域差异显著的陆源通量与营养盐输入、随季节变化的海冰覆盖，以及整体较高的海洋生产力，共同塑造了该区域沉积物的组成与分布格局。为表征现代表层沉积物的地球化学特征，研究团队依托多项德国联邦教育与研究部（BMBF）资助项目（涵盖KOMEX与KALMAR联合研究计划）开展了X射线荧光（X-ray fluorescence）分析工作。陆源成因元素（如钛Ti、铁Fe、锆Zr、钾K、铝Al）与海洋生产力代用指标（如钡铝比Ba/Al），可用于解析陆源输入（如风成粉尘、河流径流输送、冰运搬运）与海洋生产力之间的相互作用关系。本数据集包含鄂霍次克海表层沉积物样品（岩芯深度0~1 cm）的全沉积物地球化学数据，样品采用多管采样器（multicorer）获取。该数据集通过X射线荧光分析手段生成，可作为后续古海洋学研究的基础数据支撑。