Systematic Examination of Mantle Bouguer Gravity Anomalies and their Relationship to Spreading Rate and Ridge Segmentation

地幔布格重力异常及其与扩张速率和脊分段关系的系统检验

• 批准号: 9117188
• 负责人: James Cochran
• 金额: $ 10.23万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-07-01 至 1994-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9117188&HistoricalAwards=false
• 关键词: Systematic; Examination; Mantle; Bouguer; Gravity

This project will use gravity and bathymetry data from a large number of detailed surveys of ridge axes with spreading rates that vary by an order of magnitude to examine the spreading rate dependence of mantle bouguer anomalies at mid-ocean ridges crests. The spreading rate dependence of the along-axis segmentation of the ridge axis will be examined and the transition between patterns observed at slow-spreading ridges and fast-spreading ridges will be determined. The spreading rate dependence of isostasy and the support of ridge axis topography will also be examined.

该项目将使用来自一个大型海洋观测站的重力和测深数据。 对洋脊轴线进行详细调查的次数， 改变一个数量级来检查扩散率 洋中脊顶部地幔布格异常的相关性。 的沿轴分割的扩展速率依赖性， 脊轴将被检查和模式之间的过渡 在缓慢扩张的山脊和快速扩张的山脊上观察到的 测定 等熵线的扩展速率依赖性和 此外，亦会研究脊轴地形的支持。