Heat Flow and the Mascarene Ridge (Indian Ocean): The Reunion Hot Spot

热流和马斯克林海脊（印度洋）：留尼汪岛的热点

• 批准号: 9018391
• 负责人: Richard Von Herzen
• 金额: $ 25万
• 依托单位: Woods Hole Oceanographic Institution
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1991
• 资助国家: 美国
• 起止时间: 1991-10-15 至 1994-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9018391&HistoricalAwards=false
• 关键词: Heat; Flow; Mascarene; Ridge; Indian

The Reunion hot spot has been active over at least the past 70 M.y. and has left its mark on the Indian and African tectonic plates of the Indian Ocean. On the African plate, the Mascarene ridge is coincident with a significant positive geoid anomaly, similar to the Hawaiian swell, indicating that the apparent compensation of the topographic load is deep in the lithosphere or asthenosphere. Utilizing a French research vessel based in the Indian Ocean, the PI will make appropriate heat flow measurements to determine the extent to which the deep compensation may be explained by a static thermal anomaly, or whether it is primarily dynamic support as a result of active mantle convection, as the Hawaiian hot spot now appears. The heat flow and other geophysical fields will be modeled with numerical methods.

团聚热点至少在过去一直很活跃 70百万年并在印度和非洲留下了印记 印度洋的构造板块。在非洲板块， 马斯卡林海岭与一个重要的正大地水准面重合 异常，类似于夏威夷膨胀，表明 地形负荷的明显补偿是深在 岩石圈或软流圈。利用法国的一项研究 在印度洋的船只，PI将适当 热流测量，以确定 深度补偿可以通过静态热异常来解释， 或者它是否主要是由于 活跃的地幔对流，就像现在夏威夷的热点一样。 热流和其他地球物理场将采用 数值方法