The geochemical response of sedementary archives to rapid recent glacier retreat at WAP: from source to sink

沉积档案对 WAP 最近冰川快速退缩的地球化学响应：从源头到汇

• 批准号: 131194650
• 负责人: Professor Dr. Hans-Jürgen Brumsack
• 金额: --
• 依托单位: Institut für Chemie und Biologie des Meeres (ICBM)
• 依托单位国家: 德国
• 项目类别: Infrastructure Priority Programmes
• 财政年份: 2009
• 资助国家: 德国
• 起止时间: 2008-12-31 至 2019-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/131194650?language=en
• 关键词: geochemical; response; sedementary; archives; rapid

The Western Antarctic Peninsula (WAP) belongs to those regions, which are characterized by rapid regional warming and concomitant glacier retreat, affecting the coastal ecosystem by turbid meltwaters and contributing to global sealevel rise. We intend to characterize the particulate (SPM) and dissolved load of glacial meltwaters draining into Potter Cove and Maxwell Bay on King George Island by inorganic geochemical methods (major and minor elements). The extent of meltwater drainage and SPM input will be investigated by analyzing surface sediments from Potter Cove and adjacent areas. Sediment cores from different locations will be used to assess whether the increase in SPM may be quantified by determining sediment accumulation rates with 210Pb. Sediment cores from Potter Cove and Maxwell Bay serve as archives for the climatic and paleoenvironmental development of this area during the Holocene - the last century in particular - and will be analyzed at high temporal resolution. The overarching goal of the proposed study is to assess, based on geochemical proxies, whether the effects of regional warming at WAP are reflected in the sediment geochemistry and if such episodes did occur during other intervals within the Holocene.

南极西部半岛（WAP）属于那些地区，其特征是迅速的区域变暖和伴随冰川静修，影响了浑浊的融化器，并影响了沿海的生态系统，并为全球海上崛起做出了贡献。我们打算通过无机地球化学方法（主要和次要元素）（主要和次要元素）来表征将冰川融化器的颗粒物（SPM）和溶解的冰川熔融载物的溶解载荷排入乔治岛国王岛上的麦克斯韦湾。通过分析波特湾和相邻区域的表面沉积物，将研究融合水排水和SPM输入的程度。来自不同位置的沉积物核心将用于评估SPM的增加是否可以通过确定210pb的沉积物累积速率来量化。 Potter Cove和Maxwell湾的沉积物核心是全新世（尤其是上个世纪）在该地区气候和古环境发展的档案，并将以高时间分辨率进行分析。拟议的研究的总体目标是根据地球化学代理评估WAP区域变暖的影响是否反映在沉积物地球化学中，以及在全新世内其他时间间隔内是否确实发生了此类事件。