Holocene and Last-Glacial Burial Fluxes of Charcoal

摘要ATM-9422858 Ruddiman，William F. 标题：全新世和末次冰期木炭埋葬通量 无论是在今天还是在过去的历史和地质学中，木炭在大空间尺度上的埋藏通量基本上仍然是未知的。 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）在全球碳清单的背景下对木炭bupial速率进行鉴定，重点是建立化石燃料时代之前的晚全新世通量基线;（2）探讨风成炭作为近2万年来古气候指示剂的作用，特别注意它在区分源区水分平衡变化与风力变化方面的应用。 该奖项支持以下任务：（1）努力量化全新世晚期和末次冰期最大期期间主要大陆下风向海洋沉积物中风成炭的埋藏通量;（2）初步探索沿着大陆边缘各种沉积物中潜在的大炭埋藏速率;（3）湖泊沉积物的初步调查，以检验新的炭分析方法的适用性，并评估沉积学的复杂性。

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.