SGER: Sclerosponges: a key to understanding the influence of global warming on ocean thermocline and mixed layer variability..an example from the Caribbean

SGER：硬化海绵：了解全球变暖对海洋温跃层和混合层变化影响的关键......来自加勒比海的例子

• 批准号: 0738825
• 负责人: Amos Winter
• 金额: $ 6.95万
• 依托单位: University of Puerto Rico Mayaguez
• 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: 2007-08-15 至 2010-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0738825&HistoricalAwards=false
• 关键词: SGER; Sclerosponges; key; understanding; influence

Abstract: Sclerosponges are a unique group of tropical organisms that secrete aragonite skeletons across a habitat range from the near surface to 200 m. Because sclersosponges can live for 1000 years, and their aragonite geochemistry is in isotopic equilibrium with seawater, the skeletons contain an invaluable archive of continuous near surface environmental conditions during the Holocene. When oxygen isotope and trace element data are collected from a suite of specimens, it is possible to reconstruct water column temperature and salinity as a function of depth and time. Funds from this SGER will be used to locate and collect sclerosponges from a 200 m depth transect along Desecheo Island, Puerto Rico, using mixed-gas/rebreather diving technology (to 100 m) and an ROV (100-200 m depth). The Caribbean Coral Reef Institutes will provide the ROV to this project at no cost to NSF. Collected sclerosponges will be dated using U/Th and analyzed for their skeletal geochemistry to calibration and validate the geochemical proxies for paleothermometry.

摘要：Sclerosponges是一组独特的热带生物，它们在栖息地上分泌了阿拉贡的骨骼，范围从近表面到200 m。由于Sclersosponges可以生存1000年，并且它们的后期地球化学与海水具有同位素平衡，因此在全新世期间，骨骼包含一个可宝贵的档案。当从一组样品中收集氧同位素和痕量元素数据时，可以将水柱温度和盐度作为深度和时间的函数重建。该SGER的资金将用于使用混合气/再呼吸道潜水技术（至100 m）和ROV（100-200 m深度），从沿德斯乔岛（Desecheo Island）的200 m深处进行定位和收集索具。加勒比海珊瑚礁研究所将免费提供该项目的ROV。收集的硬化性将使用U/Th进行日期，并分析其骨骼地球化学以校准并验证地球化学代理以实现了古热测定法。