The global distribution of Holocene meteoric 10Be fluxes from atmospheric models. Distribution maps for terrestrial Earths surface applications

The determination of exposure ages, erosion rates, or terrigenous fluxes into the oceans with meteoric cosmogenic 10Be or 10Be/9Be ratios requires knowledge of the depositional fluxes of this nuclide (Willenbring and von Blanckenburg, 2010). The spatial distribution of these fluxes depends on stratospheric production, solar and paleomagnetic modulation, and atmospheric restribution. To allow for the estimation of such fluxes at a given site, and to enable the GIS-based calculation of such fluxes that integrate over large spatial areas (river basins, ocean basins) we provide global maps and excel sheets interpreted to present the average Holocene 10Be fluxes and an estimate of their uncertainty as modeled by atmospheric distribution models (Heikkilä et al., 2013, Heikkilä et al., 2013, Heikkilä and Smith, 2013).

利用大气成因宇宙成因¹⁰Be或¹⁰Be/⁹Be比值测定暴露年龄、侵蚀速率或入海陆源通量时，需知晓该核素的沉积通量（Willenbring与von Blanckenburg，2010）。此类通量的空间分布取决于平流层生成效率、太阳与古地磁调制作用，以及大气再分布过程。为实现特定站位通量的估算，并支持基于地理信息系统（GIS，Geographic Information System）的大空间尺度（流域、洋盆）积分通量计算，我们提供全球地图与Excel数据表，经解读后可呈现全新世平均¹⁰Be通量，以及由大气分布模型模拟得到的通量不确定性估算结果（Heikkilä等，2013；Heikkilä等，2013；Heikkilä与Smith，2013）。