Production and transport of soil and sediments, determined by cosmogenic radionuclides and noble gases

土壤和沉积物的产生和运输，由宇宙放射性核素和稀有气体决定

• 批准号: ARC : DP0342689
• 负责人: Derek Fabel
• 金额: $ 29.5万
• 依托单位: Australian National University
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2003
• 资助国家: 澳大利亚
• 起止时间: 2003-01-01 至 2005-12-31
• 项目状态: 已结题
• 来源: https://researchdata.edu.au/production-transport-soil-noble-gases/65312
• 关键词: Production; transport; soil; sediments; determined

Production and transport of soil and sediments, determined by cosmogenic radionuclides and noble gases. Basic questions concerning Australia's soil and regolith resources are addressed through measurement of nuclides produced by cosmic rays in near-surface minerals. Cosmogenic Be-10, Ne-21 and Al-26 are used to (i) quantify the sustainable levels of soil loss, (ii) assess long-term mixing rates, (iii) quantify dispersion and flux of regolith materials from hill-slopes to rivers, and (iv) determine the rates of sediment movement through Australian rivers and floodplains, including sediment-adsorbed pollutants. The research has strong implications for the usage and conservation of soil, sediments and weathered deposits for agriculture, mineral resources, and sedimentary waste disposal.

土壤和沉积物的产生和迁移，由宇宙成因放射性核素和惰性气体决定。通过测量近地表矿物中宇宙射线产生的核素，解决了有关澳大利亚土壤和风化层资源的基本问题。宇宙成因Be-10、Ne-21和Al-26用于（i）量化土壤流失的可持续水平，（ii）评估长期混合率，（iii）量化风化层物质从山坡到河流的分散和通量，以及（iv）确定通过澳大利亚河流和洪泛区的沉积物移动速率，包括沉积物吸附的污染物。该研究对农业、矿产资源和沉积废物处理的土壤、沉积物和风化沉积物的利用和保护具有重要意义。