Solar Modulation of Atmospheric C14 Production (Solar Wind, Flares, Irradiance and Climate Changes)

研究人员将解开谜团，了解大气中碳14随时间变化的现象。了解碳14产生的时间历史对于测定考古样品的年代至关重要。这些变化的原因也可能是对涉及气候变化的过程的诊断。主要的努力是通过对已知树龄的木材样本中的年轮进行高精度测量来检验这种变异。测量将使用地下实验室中的液体闪烁计数器和加速器质谱仪进行。一个主要目标将是评估气候变化对北美、南美和非洲西海岸碳14枯竭二氧化碳上涌的影响。

The investigators will deconvolute and understand phenomena that produce variations in atmospheric Carbon 14 as a function of time. Knowledge of the time history of Carbon 14 production is essential for dating archeological samples. The cause of these variations may also be diagnostic of processes involved in climate change. The main effort is to examine this variation with high precision measurements of annual tree rings in samples of wood of a known age. Measurements will be made with liquid scintillation counters in an underground laboratory, and by accelerator mass spectrometry. A major goal will be to evaluate the effect of climate change on the upwelling of Carbon 14 depleted carbon dioxide along the western coasts of North America, South America, and Africa.