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: 0242618
• 负责人: Charles Langmuir
• 金额: $ 44.76万
• 依托单位: Harvard University
• 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 2007-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0242618&HistoricalAwards=false
• 关键词: Collaborative; Research; Integrated; Hydrothermal; Petrological

Abstract 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.

摘要Ridge 2000计划已选择了Lau Basin的Eastern Lau扩展中心一个综合研究地点，以了解从地幔到Microbe的背面扩展中心。 这个扩散中心在俯冲影响下具有连续的梯度，这是背弧盆地玄武岩的特征，而扩散速率的变化几乎为两个。 水热发现是该项目的逻辑计划背后的推动力。 先前两次前往扩展中心的巡游将提供测深和侧扫数据。 该项目将使用ROV晋教来调查六个目标区域，以在横穿中性浮力羽流的深度处水柱特性。 安倍晋三在50m底部的高度上潜水将获得高分辨率的测深以及水柱的测量。 Abe在5-10m的高度下潜水将提供发现的通风口的完整照片覆盖范围。