SGER: Verification of the Use of Sclerosponges for Paleoclimatic Research

SGER：验证硬化海绵在古气候研究中的用途

• 批准号: 0741675
• 负责人: Peter Swart
• 金额: $ 4.97万
• 依托单位: University of Miami
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-08-01 至 2008-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0741675&HistoricalAwards=false
• 关键词: SGER; Verification; Use; Sclerosponges; Paleoclimatic

SGER: Verification of the Use of Sclerosponges for Paleoclimatic ResearchPeter SwartUniversity of Miami/RSMASAbstractThis project will assess the reproducibility of geochemical records of Sr/Ca ratios and oxygen isotopes in sclerosponges, both within single skeletons and from specimens collected from the same location. This research is considered exploratory because although there is no information at present as to the error that can be placed on the geochemical signals measured in the skeleton of sclerosponges, these proxies are potentially very important as they can provide high-resolution information of water mass characteristics over the past 500-700 years. The information obtained from this SGER will enable the PI to constrain the propagated error produced when computing salinities from combined geochemical data. These data are critical for determining whether reconstructions of North Atlantic salinities from sclerosponges are real or below analytical uncertainty. Once these errors have been established, it will then be possible to determine whether or not salinity variations in the Atlantic can be reconstructed from this biological archive over the past 500 years and longer. The broader impacts of this project include support of a PhD student's research and the first ultra high-resolution measurement of Atlantic gyre salinity and temperature during periods such as the Little Ice Age and the Medieval Warm Period.

SGER：验证硬化海绵在古气候研究中的使用彼得·斯瓦特迈阿密大学/RSMAS摘要该项目将评估硬化海绵中 Sr/Ca 比率和氧同位素地球化学记录的再现性，无论是在单个骨骼内还是从同一地点采集的标本中。这项研究被认为是探索性的，因为虽然目前没有关于在硬化海绵骨架中测量的地球化学信号的误差的信息，但这些代理可能非常重要，因为它们可以提供过去 500-700 年水团特征的高分辨率信息。从 SGER 获得的信息将使 PI 能够限制根据组合地球化学数据计算盐度时产生的传播误差。这些数据对于确定从硬化海绵重建的北大西洋盐度是否真实或低于分析不确定性至关重要。一旦确定了这些错误，就可以确定是否可以从过去 500 年或更长时间的生物档案中重建大西洋的盐度变化。该项目的更广泛影响包括支持博士生的研究以及首次对小冰河期和中世纪温暖期等时期的大西洋环流盐度和温度进行超高分辨率测量。