Collaborative Research: Using Chemical Weathering and Pedogenesis in Karkevagge, Northern Sweden to Investigate Local Landscape Development in a Regional Context

合作研究：利用瑞典北部卡尔克瓦格的化学风化和成土作用来调查区域背景下的当地景观发展

• 批准号: 9818667
• 负责人: Colin Thorn
• 金额: $ 11.02万
• 依托单位: University of Illinois at Urbana-Champaign
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-03-15 至 2002-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9818667&HistoricalAwards=false
• 关键词: Collaborative; Research; Using; Chemical; Weathering

The research will provide comprehensive information on the chemical weathering of surficial rock and on soil development in a mountainous arctic environment in northern Sweden. The present work builds on a famous study undertaken in the 1950s and extends it into a new realm of scientific investigation while simultaneously expanding research undertaken in a single valley into a regional framework. The rock portion of the study includes detailed investigation of how naturally-occurring surface and near-surface rock breaks down chemically, plus the extraction and analysis of machine-polished rock disks which were inserted into several different soil categories five years ago. Soil development is largely chemically driven, and the soilinvestigation will provide a rare, perhaps unique, view of soil development within the Scandinavian arctic using the American Soil Taxonomy. The research offers two important contributions. First, chemical processes at the landsurface in cold environments are still poorly understood. The present work will make a significant contribution to this poorly developed area. Second, climatic forecasts indicate that the most dramatic changes in the foreseeable future will be in the high latitudes. The chemical signals being evaluated in the present work afford the prospect of being excellent indicators of climatically-induced changes at the earth's surface. Such indicators of environmental change are critical if people are to continue to use fragile arctic environments during periods of climatic change. Several aspects of the research embrace cutting edge techniques such as cosmogenic dating, and also include development of what should be an important new dating material for radiocarbon dating.

该研究将提供有关瑞典北部山区北极环境中地表岩石化学风化和土壤发育的全面信息。 目前的工作以 20 世纪 50 年代进行的一项著名研究为基础，并将其扩展到科学研究的新领域，同时将在单个山谷进行的研究扩展到区域框架。该研究的岩石部分包括对天然地表和近地表岩石如何化学分解的详细调查，以及五年前插入几种不同土壤类别的机器抛光岩石盘的提取和分析。土壤发育主要是由化学驱动的，土壤调查将使用美国土壤分类法提供斯堪的纳维亚北极地区土壤发育的罕见的、也许是独特的观点。 该研究提供了两个重要贡献。首先，人们对寒冷环境中地表的化学过程仍然知之甚少。目前的工作将为这个欠发达的领域做出重大贡献。其次，气候预测表明，在可预见的未来，最剧烈的变化将出现在高纬度地区。目前工作中正在评估的化学信号有望成为气候引起的地球表面变化的优秀指标。如果人们要在气候变化期间继续使用脆弱的北极环境，这些环境变化指标至关重要。 该研究的几个方面包括宇宙成因测年等尖端技术，还包括开发用于放射性碳测年的重要新测年材料。