Hydrothermal Venting through Outcrops on the Eastern Flank of the Juan de Fuca Ridge near 48 Degrees N: A Manned Submersible Investigation

北纬 48 度附近胡安德富卡山脊东侧露头的热液排放：载人潜水器调查

• 批准号: 9314632
• 负责人: Michael Mottl
• 金额: $ 31.5万
• 依托单位: University of Hawaii
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-01-01 至 1998-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9314632&HistoricalAwards=false
• 关键词: Hydrothermal; Venting; through; Outcrops; Eastern

9314632 Mottl The PIs past participation on NOAA cruises at three hydrothermal sites on basement highs on the eastern flank of JdF (namely, FlankFlux `90,'92) led him to propose a model of how hydrothermal processes operate at flanks of ridges. In the present project, the PI will go back with the ALVIN and make some spatially fine-scale observations, measurements (heat-flow, water column properties etc.), and collect samples in order to evaluate his current model. The PI argues that past work on ridge flank hydrothermal vents at a number of different sites revealed that the hydrothermal processes and their effects are diverse; and therefore, descriptive studies of the kind proposed are necessary in order to determine global impact of ridge flank hydrothermal circulation. The site chosen is "JdF-3" which provides an unique opportunity in having high sedimentation rate combined with high basedment temperature normally, such small diffuse hydrothermal vents would be difficult to locate in unsedimented areas . ***

小行星9314632 专业研究员过去曾参与海洋大气署在JdF东侧基底高点三个热液地点的巡航（即FlankFlux '90，' 92），这使他提出了一个热液过程如何在脊侧翼运作的模型。 在本项目中，PI将与ALVIN一起返回，并进行一些空间精细尺度的观测，测量（热流，水柱特性等）， 收集样本来评估他现在的模型 研究所认为，过去在若干不同地点对海脊侧翼热液喷口进行的研究表明，热液过程及其影响各不相同;因此，有必要进行拟议的这类描述性研究，以确定海脊侧翼热液循环的全球影响。 选定的地点是“JdF-3”，它提供了一个独特的机会，具有高沉积速率和高基底温度，通常，这种小的扩散热液喷口很难在未沉积的地区找到。 ***