Loss on ignition in sediment core Haem13 from lake Hämelsee

This dataset provides Loss-on-ignition (LOI) data for the Lateglacial sediment sequence retrieved from Lake Hämelsee (Germany) in 2013. LOI values (%) are presented against both depth (m) and age (cal yr. BP). The LOI data was used to provide information on LGIT landscape dynamics at lake Hämelsee. A total of 369 samples were analyzed for LOI, providing a continuous 1-cm-resolution record across the LGIT and early Holocene sections of the HAEM-B record. Subsamples of 1 cm3 were dried in a 105°C oven for 24 hrs before being placed in a furnace at 550 °C for 4 hrs. Loss-on-ignition was calculated by comparing the dry weight of the samples before and after combustion at 550 °C following Heiri et al. (2001) and results are expressed as a percentage. The analyses were performed in the laboratories of Utrecht University, the Netherlands.

本数据集提供了2013年从德国黑梅尔湖（Lake Hämelsee）获取的晚冰期（Lateglacial）沉积序列的烧失量（Loss-on-ignition, LOI）数据。烧失量百分比（%）以深度（单位：米）与年龄（校准年代前，cal yr. BP）两组变量进行对应呈现。该烧失量数据可用于揭示黑梅尔湖晚冰期（LGIT）的区域景观动态。本研究共完成369个沉积物样品的烧失量测试，在HAEM-B记录的晚冰期及全新世早期层段构建了分辨率为1厘米的连续沉积记录。实验操作流程为：取1立方厘米的子样品置于105℃烘箱中烘干24小时，随后将样品放入550℃马弗炉内灼烧4小时。烧失量的计算参照Heiri等人（2001）的方法，通过对比样品灼烧前后的干重得出结果，并以百分比形式表征。本次分析均在荷兰乌得勒支大学（Utrecht University）实验室完成。