Temporal Variations in Hydrothermal Fluid Chemistry at 9-10N East Pacific Rise: Elucidating Ties to Crustal and Biological Processes

北纬 9-10 度东太平洋海隆热液流体化学的时间变化：阐明与地壳和生物过程的联系

• 批准号: 0327126
• 负责人: Julia Bryce
• 金额: $ 64.24万
• 依托单位: University of New Hampshire
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-01-01 至 2010-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0327126&HistoricalAwards=false
• 关键词: Temporal; Variations; Hydrothermal; Fluid; Chemistry

This is a study of the hydrothermal systems at the Ridge 2000 East Pacific Rise Integrated Studies site at 9 degrees north. During the past decade pronounced temporal variability in the hydrothermal fluids have been observed, and the chemical data have been interpreted to suggest that the changes in fluid composition reflect changes in the depth of hydrothermal circulation. Three hypotheses will be addressed in the current project. Changes in the depth of phase separation reflect changes in depth to the heat source. Magma has migrated upward and will soon erupt and/or result in another diking event. Changes in fluid compositions, reflecting changes in the pressure-temperature conditions of reaction and phase separation, are the causes of changes in the biological communities.

这是对北部9度的Ridge 2000 East Pacific Rise综合研究地点的热液系统的研究。 在过去的十年中，已经观察到了热液流体的明显时间变异性，并且已经解释了化学数据，以表明流体组成的变化反映了水热循环深度的变化。 当前项目将解决三个假设。 相分离深度的变化反映了深度变化对热源的变化。 岩浆已经向上迁移，很快就会爆发和/或导致另一个堤防事件。 流体组成的变化，反映了反应和相位分离的压力温度条件的变化，是生物群落变化的原因。