Hyperspectral scanning imaging index from sediment core HZM19, Holzmaar (West-Eifel Volcanic Field, Germany)

Pigments measurements (RABD671 and RABD845) were made by Specim PFD-CL-65V10E linescan camera following the methods of (Butz et al., 2015, doi:10.1117/1.JRS.9.096031), at a resolution of 60 × 60 μm. Scanning methodology and index calculations can be found in (Zander et al., 2021, doi:10.1016/j.scitotenv.2020.143713). The sediment core HZM19 was collected in 2019, from Holzmaar, West-Eifel Volcanic Field in Germany using a UWITEC Piston Corer. The sediment core was collected to reconstruct environmental and climate changes of Holzmaar for the last 16,000 years cal BP. Particularly in this data set we cover between 2450-2950 cal BP.

色素测量（涵盖RABD671与RABD845两项指标）采用Specim PFD-CL-65V10E型线扫相机完成，实验流程遵循Butz等人2015年发表的方法（doi:10.1117/1.JRS.9.096031），测量分辨率为60×60 μm。扫描方法与色素指数的计算方式可参考Zander等人2021年的研究成果（doi:10.1016/j.scitotenv.2020.143713）。沉积物岩芯HZM19于2019年采自德国西艾菲尔火山场的霍尔茨玛尔湖（Holzmaar），采集工具为UWITEC活塞式采芯器。获取该岩芯的目的是重建霍尔茨玛尔湖过去16000个校准距今年（cal BP）的环境与气候变化历史。本数据集的覆盖年代区间为2450~2950校准距今年（cal BP）。