Magnetic susceptibility in dated sediment core from lake Teremendo (Michoacán, Mexico)

This dataset comprises magnetic susceptibility data for a sediment sequence (LTe22-1) from lake Teremendo (Michoacán, Mexico). The data were used to explore connections between lake carbon cycling and related ecosystem processes under natural and anthropogenic environmental change over the past four centuries. The sediment core (155 cm in length) was retrieved with a Uwitec corer near the middle of the lake basin (water depth ~8 m) in April 2022. Prior to sediment sectioning, the core was scanned with a magnetic susceptibility probe with 5 mm step size. The data are provided from the sediment surface down to the depth of 46.5 cm, covering a time period from 2022 to around 1650. Age estimates for each sediment section have been calculated based on radiolead (Pb-210) dating of the surface sediment sections and four radiocarbon (C-14) measurements.

本数据集包含来自墨西哥米却肯州特雷门多湖（Lake Teremendo）的沉积物岩芯LTe22-1的磁化率（magnetic susceptibility）数据。该数据被用于探究过去4个世纪中，自然与人为环境变化背景下湖泊碳循环及其相关生态过程之间的关联。本次采集的沉积物岩芯总长155 cm，于2022年4月使用Uwitec采样器在湖盆中部（水深约8 m）处钻取获取。在对沉积物进行分样前，研究人员以5 mm的步长使用磁化率探头（magnetic susceptibility probe）对岩芯完成扫描。本次公开的数据覆盖了从沉积物表层至46.5 cm深度的范围，对应的时间跨度为2022年至约1650年。各沉积物分样的年代估算基于表层沉积物的铅-210（Pb-210）测年结果以及4次放射性碳（C-14）测年数据完成。