Geophysical and Geological Study of the Translation in Ridge Axis Bathymetry along an Intermediate Spreading Rate Mid-Ocean Ridge: Change from a Rift Valley to an Axial High

洋中脊中脊轴测深平移的地球物理和地质研究：从裂谷到轴高的变化

• 批准号: 9302091
• 负责人: James Cochran
• 金额: $ 61.96万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-11-01 至 1996-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9302091&HistoricalAwards=false
• 关键词: Geophysical; Geological; Study; Translation; Ridge

9302091 Cochran This is a geophysical study of the Southeast Indian Ridge near to investigate the change in the morphology and structure of mid ocean ridges that occur at intermediate (60 80 mm/year) spreading rates. A field program will collect multibeam bathymetry, side scan sonar, gravity, and magnetic data between 95 and 108 degrees east on the crest and flanks of the ridge where there is a change from an axial valley morphology. The data will be used to determine how the transition in axial morphology occurs and its effects on ridge axis segmentation, the structure of the axial accretion zone, ridge axis isostasy, mantle upwelling and magma distribution along the axis, the abyssal hill fabric and the tectonic processes that form abyssal hills. ***

小行星9302091 这是一个地球物理研究的东南印度洋海岭附近调查中洋脊的形态和结构的变化，发生在中间（60 - 80毫米/年）的扩展速率。一个实地项目将收集多波束测深、侧扫声纳、重力和磁力数据，这些数据位于东经95度至108度之间的山脊顶部和侧翼，那里有一个从轴向山谷形态的变化。这些数据将用于确定轴向形态的转变是如何发生的及其对脊轴分段、轴向增生带结构、脊轴等值线、地幔上涌和岩浆沿轴沿着分布、深海丘组构和形成深海丘的构造过程的影响。***