Holocene and Last-Glacial Burial Fluxes of Charcoal

全新世和末次冰期木炭的埋藏通量

• 批准号: 9422858
• 负责人: William Ruddiman
• 金额: $ 32.17万
• 依托单位: University of Virginia Main Campus
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-05-15 至 2000-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9422858&HistoricalAwards=false
• 关键词: Holocene; Last; Glacial; Burial; Fluxes

Abstract ATM-9422858 Ruddiman, William F. University of Virginia Title: Holocene and Last-Glacial Burial Fluxes of Charcoal The burial flux of charcoal over large spatial scales remains basically unknown, both today and in the historical and geological past. Recent advances in charcoal analysis have opened up new research opportunities, two of which are targeted in this project: (1) a qualification of charcoal bupial rates in the context of global carbon inventories, with an emphasis on establishing baseline late Holocene fluxes prior to the fossil-fuel era; (2) an exploration of eolian charcoal as a paleoclimatic indicator during the last 20,000 years, with particular attention to its use in distinguishing changes in source-area moisture balances from changes in wind strength. This award supports the following tasks: (1) an effort to quantify burial fluxes of eolian charcoal during the late Holocene and last- glacial maximum in ocean sediments downwind from the major continents; (2) initial explorations of potentially large charcoal burial rates in a variety of deposits along continental margins; and (3) initial investigation of lacustrine sediments to test the applicability of the new charcoal analysis method and to evaluate sedimentological complications.

标题：全新世和末冰期木炭的埋藏通量在大空间尺度上，无论是今天还是过去的历史和地质时期，木炭的埋藏通量基本上都是未知的。木炭分析的最新进展开辟了新的研究机会，其中两个是本项目的目标：(1)在全球碳清单背景下确定木炭燃烧率，重点是建立化石燃料时代之前的全新世晚期通量基线；(2)对近2万年来风成木炭作为古气候指标的探索，特别关注其在区分源区水分平衡变化和风力变化方面的应用。该奖项支持以下任务：(1)量化全新世晚期和末次冰期极大期海洋沉积物中风成木炭的埋藏通量；(2)在沿大陆边缘的各种沉积物中初步勘探到潜在的大埋藏率的木炭；(3)对湖泊沉积物进行初步调查，以测试新的木炭分析方法的适用性，并评估沉积学并发症。