A Geophysical Study of the O'Gorman Fracture Zone

奥戈尔曼断裂带的地球物理研究

• 批准号: 8713872
• 负责人: James McClain
• 金额: $ 7万
• 依托单位: University of California-Davis
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-12-01 至 1990-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8713872&HistoricalAwards=false
• 关键词: Geophysical; Study; Gorman; Fracture; Zone

In the Fall of 1985, the PI in an NSF funded project undertook an extensive geophysical survey of the O'Gorman Fracture Zone. This feature comprises two segments lying to the west and east of the East Pacific Rise (EPR) at 13 degree N. The former appears to be a normal fracture zone, while the East O'Gorman is marked by several seamounts. The geophysical survey comprised of Ocean Bottom Seismic (OBS) refraction shooting, SeaBeam profiling and magnetic and gravity measurements. In this award, the PI will continue the analysis of the data collected on this experiment particularly the OBS data which is of excellent quality. The major goal of the project is to characterize the internal structure of the EOG seamounts, and hence to constrain models for the origin of seamount chains on young oceanic lithosphere.

1985年秋天，在国家科学基金会资助的项目中，PI对O'Gorman断裂带进行了广泛的地球物理调查。该构造包括位于北纬13度的东太平洋隆起（EPR）的西部和东部两部分，前者看起来是一个正常的断裂带，而东奥戈尔曼则以几个海山为标志。地球物理调查包括海底地震（OBS）折射射击，海床剖面和磁力和重力测量。在这个奖项中，PI将继续分析这次实验中收集的数据，特别是OBS数据，这些数据质量非常好。该项目的主要目标是描述EOG海山的内部结构，从而约束海山链在年轻海洋岩石圈上的起源模式。