Coupled Temporal Changes in Water Chemistry and Biological Community Structure at Newly-Formed Hydrothermal Vents on the EPR Crest

EPR 顶部新形成的热液喷口水化学和生物群落结构的耦合时间变化

• 批准号: 9302606
• 负责人: Marvin Lilley
• 金额: $ 22.26万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-05-15 至 1996-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9302606&HistoricalAwards=false
• 关键词: Coupled; Temporal; Changes; Water; Chemistry

Coupled temporal changes in water chemistry and biological community structure at newly-formed hydrothermal vents on the EPR crest This is a study of the coupled evolution of fluid chemistry and biological community structure on a fine scale (9 degree 49.6' - 9 degree 50.6'N) with the abundant diffuse flow which supports complex animal communities as the principal focus. The work is coupled with a funded biology program on the East Pacific Rise between 9-10 N to study the coevolution of the chemistry and biological communities in newly formed hydrothermal systems. The Alvin program in April 1991 documentated to within days the occurence of a seafloor volcanic eruption. In 1992 Alvin dives to this site documented significant changes in both the chemistry of the vents and the biological communities surrounding them. As this is the only portion of the mid-ocean ridge system defining "time zero" for an eruptive event and the formation of a new hydrothermal system, this site offers an unprecedented opportunity to follow temporal changes in vent chemistry and associated biological community structure.

EPR 顶部新形成的热液喷口处水化学和生物群落结构的耦合时间变化这是一项对精细尺度（北纬 9 度 49.6' - 9 度 50.6'N）流体化学和生物群落结构耦合演化的研究，以支持复杂动物群落的丰富扩散流为主要焦点。 这项工作与北纬 9-10 度东太平洋海隆资助的生物学项目相结合，研究新形成的热液系统中化学和生物群落的共同进化。 1991 年 4 月的阿尔文计划记录了几天之内海底火山喷发的发生。 1992 年，阿尔文潜入该地点，记录了喷口化学成分及其周围生物群落的重大变化。 由于这是洋中脊系统中唯一定义喷发事件“零时”和新热液系统形成的部分，因此该地点为跟踪喷口化学和相关生物群落结构的时间变化提供了前所未有的机会。