Collaborative Research: Integrated Hydrothermal and Petrological Studies of the Eastern Lau Spreading Center

合作研究：东刘扩散中心的综合热液和岩石学研究

• 批准号: 0241913
• 负责人: Dana Yoerger
• 金额: $ 46.68万
• 依托单位: Woods Hole Oceanographic Institution
• 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: 2004-08-01 至 2006-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0241913&HistoricalAwards=false
• 关键词: Collaborative; Research; Integrated; Hydrothermal; Petrological

The Eastern Lau Spreading Center in the Lau Basin has been chosen an an integrated studies site by the Ridge 2000 program to understand a back-arc spreading center from mantle to microbe. This spreading center has a continuous gradient in the subduction influence that is characteristic of back-arc basin basalts, and the spreading rate changes by nearly a factor of two. Hydrothermal discovery is the driving force behind the logistic plan of this project. Two previous cruises to the spreading center will provide bathymetry and side-scan data. This project will use the ROV ABE to survey six target regions for water column properties at depths that traverse the neutrally buoyant plume. ABE dives at a height above bottom of 50m will obtain high-resolution bathymetry as well as water column measurements. ABE dives at a height of 5-10m will then provide complete photo coverage of the discovered vent sites.

Lau 盆地的东部 Lau 传播中心已被 Ridge 2000 计划选为综合研究地点，以了解从地幔到微生物的弧后传播中心。 该扩张中心在俯冲影响方面具有连续梯度，这是弧后盆地玄武岩的特征，并且扩张速率变化近两倍。 热液发现是该项目后勤计划背后的驱动力。 之前两次前往扩散中心的巡航将提供测深和侧扫数据。 该项目将使用 ROV ABE 来调查六个目标区域，了解穿过中性浮力羽流的深度的水柱特性。 ABE 在距底部 50m 的高度潜水将获得高分辨率的水深测量以及水柱测量结果。 然后，ABE 会在 5-10m 高度潜水，提供已发现喷口地点的完整照片覆盖。