A 2-D SeaMARC II/Gravity Study of Near-Axis 'Gravity Rolls' on the Southern East Pacific Rise

东南太平洋海隆近轴“重力滚转”的二维 SeaMARC II/重力研究

• 批准号: 8911587
• 负责人: Kenneth Macdonald
• 金额: --
• 依托单位: University of California-Santa Barbara
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-07-01 至 1995-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8911587&HistoricalAwards=false
• 关键词: SeaMARC; II; Gravity; Study; Near

This is a project to determine the time of origin, linkage to mantle upwelling, and mode of development of cross-grain gravity rolls on the southern East Pacific Rise. The principal Investigators will carry out SeaMARC II and gravity surveys of 0 to 6 million year old crust on west flank of the East Pacific Rise between 16 and 19 South. The extensive SeaMARC coverage will also be used to address problems relating to the evolution of large offset overlapping spreading centers. %%% SeaMARC II is a sea floor mapping tool that is used extensively to provide extensive bathymetric and side scan imagery. The data will provide important information on the morphology and tectonic history of the sea floor and will also assist in making better determinations of topographic corrections to the gravity data. The cross grain gravity rolls are anomalous features originally detected in satellite data. These interesting and anomalous features have not been thoroughly studied from a surface ship. The Principal Investigators have provided leadership in the area of marine tectonics and gravity data interpretation for many years. They are uniquely well qualified for this study.

这是一个项目，以确定起源的时间，连接到地幔上涌，和模式的发展模式的横向重力卷在南东太平洋隆起。主要调查人员将在南16至19之间的东太平洋海隆西侧进行SeaMARC II和重力调查。广泛的SeaMARC覆盖范围也将用于解决与大偏移重叠扩展中心的演变有关的问题。SeaMARC II是一种海底测绘工具，广泛用于提供广泛的测深和侧扫图像。这些数据将提供关于海底形态和构造历史的重要信息，还将有助于更好地确定对重力数据的地形校正。横纹重力滚动是最初在卫星数据中检测到的异常特征。这些有趣而异常的特征还没有从水面舰艇上进行过彻底的研究。多年来，首席调查员在海洋构造和重力数据解释领域发挥了领导作用。他们是唯一有资格参加本研究的人。