Cosmogenic soil production rate calculator.
Cosmogenic soil production rate calculator.
复制标题
宇宙成因土壤生产率计算器。
DOI：
10.1016/j.mex.2019.11.026
复制
发表时间：
2020
期刊：
影响因子：
1.9
通讯作者：
Rodés Á
中科院分区：
文献类型：
--
作者：
Rodés Á
为了了解土壤从基岩形成的速率，重要的是要知道基岩表面下降的速率（表观侵蚀速率，假设为常数）。以前的模型，计算表观侵蚀率使用测量浓度的宇宙成因放射性核素依赖于这样的假设，即土壤的体积密度，形成作为基岩侵蚀的产品要么等于基岩本身，或与土壤剖面的深度是恒定的。这种假设未能认识到土壤的密度明显较低，可能不随深度而恒定。这里提出的模型允许同位素衍生的土壤生产率的计算，考虑土壤覆盖基岩表面的体积密度剖面。该计算器可以在MATLAB®和GNU Octave©中运行，代表了对土壤生产率推导的新颖和重大贡献。
To understand the rates at which soils form from bedrock, it is important to know the rates at which the bedrock surface lowers (the apparent erosion rate, which is assumed to be constant). Previous models that calculate apparent erosion rates using measured concentrations of cosmogenic radionuclides rely on the assumption that the bulk density of the soil which forms as a product of bedrock erosion either equals that of the bedrock itself or is constant with depth down the soil profile. This assumption fails to recognise that soils have significantly lower densities that might not be constant with depth. The model presented here allows for the calculation of isotopically-derived soil production rates, considering the bulk density profile of the soil overlying the bedrock surface. This calculator, which can be run both in MATLAB® and GNU Octave©, represents a novel and significant contribution to the derivation of soil production rates.