Ramped pyrolysis/oxidation radiocarbon data for river sediment, soil, and bedrock from the Canning River drainage basin, Alaska (2022-2024)

We used ramped pyrolysis/oxidation radiocarbon (RPO-14C) analyses to investigate spatial and temporal variations in the thermochemical stability and relative ages of fluvial particulate organic carbon (POC), soil organic carbon, and rock organic carbon in the Canning River drainage basin in northeastern Alaska. This dataset includes thermogram data (CO2 released from a sample as a function of RPO thermal oxidation temperature), activation energy distribution data, and radiocarbon and stable carbon isotope data for distinct RPO fractions for each sample. Activation energy distributions were calculated from the thermogram data using the RampedPyrox package (Hemingway et al., 2016). References: Hemingway, J. D. (2016). rampedpyrox: open-source tools for thermoanalytical data analysis (Version 0.1.2). Retrieved from http://pypi.python.org/pypi/rampedpyrox

本研究采用升温热解/氧化放射性碳（RPO-14C）分析方法，探究阿拉斯加东北部坎宁河流域内河流颗粒态有机碳（POC）、土壤有机碳与岩石有机碳的热化学稳定性及相对年龄的时空变化规律。本数据集包含各样本的不同RPO分级组分的热谱图数据（即样本释放的二氧化碳随RPO热氧化温度变化的规律）、活化能分布数据，以及放射性碳与稳定碳同位素数据。活化能分布基于热谱图数据，通过RampedPyrox软件包（Hemingway等，2016）计算得到。参考文献：Hemingway, J. D. (2016). rampedpyrox: open-source tools for thermoanalytical data analysis (Version 0.1.2). Retrieved from http://pypi.python.org/pypi/rampedpyrox