Magmatic/Tectonic Controls on Hydrothermal Discharge Along the Axial Zone of the Ultrafast-Spreading EPR at 17-18 Degree S; A Near-Bottom Photo/Acoustic Survey Using ARGO II

岩浆/构造对南纬 17-18 度超快扩张 EPR 轴带热液排放的控制；

• 批准号: 9416996
• 负责人: Rachel Haymon
• 金额: --
• 依托单位: University of California-Santa Barbara
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-10-15 至 2001-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9416996&HistoricalAwards=false
• 关键词: Magmatic; Tectonic; Controls; Hydrothermal; Discharge

The ARGO II fiber-optic near-bottom optical-acoustic system will be used to survey the narrow axial zone of the ultrafast spreading East Pacific Rise at 17 degrees south. The purpose is to test the hypothesis that along-strike thermal gradients set up the segmented pattern of magma supply exert primary control on the distribution and types of hydrothermal vents and vent biota, as well as on varioation in fine-scale volcanotectonic characteristics along the axial zone.

ARGO II型光纤近底光声系统将用于测量南纬17度的超快扩展东太平洋上升的狭窄轴向区。目的是验证沿走向热梯度建立的分段岩浆供给格局对热液喷口和喷口生物群的分布和类型以及细尺度火山构造特征沿轴向带的变化起主要控制作用的假设。