A SeaBeam 2000/Gravity/Magnetic Study of the East Flank of the EPR, 15 Degree - 20 Degree S

EPR 东翼 SeaBeam 2000/重力/磁力研究，南纬 15 度 - 20 度

• 批准号: 9615204
• 负责人: Daniel Scheirer
• 金额: $ 9.53万
• 依托单位: Brown University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-09-01 至 2001-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9615204&HistoricalAwards=false
• 关键词: SeaBeam; 2000; Gravity; Magnetic; Study

9615204 Scheirer Gravity, magnetic, side-scan sonar, and bathymetric data will be collected on the east flank of the East Pacific Rise between 15 and 20 degrees south. This region has four anomalous features: gravity lineations, abundant seamounts, asymmetric subsidence, and asymmetric spreading. the primary questions: are whether there are gravity lineations on the Nazca plate, does small-scale convection in the Pacific asthenosphere bring about the anomalous low subsidence of young Pacific seafloor, are the seamounts symmetrically distributed about the axis, and how is the long- wavelength segmentation of the ridge axis expressed off axis.

小行星9615204 重力、磁力、侧扫声纳和测深数据将在南纬15至20度之间的东太平洋海隆东侧收集。该区域具有重力线理、丰富的海山、不对称沉降和不对称扩张等四个异常特征。主要问题：纳斯卡板块上是否存在重力线理，太平洋软流层中的小尺度对流是否导致了年轻太平洋海底的异常低沉降，海山是否对称分布，以及脊轴的长波长分段在轴外如何表现。