A Piggyback OBS Tomography Study of the East Pacific Rise South of the Garret Fracture Zone

阁楼断裂带以南东太平洋海隆的搭载 OBS 断层扫描研究

• 批准号: 9102899
• 负责人: John Orcutt
• 金额: $ 53.5万
• 依托单位: University of California-San Diego Scripps Inst of Oceanography
• 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: 1991-06-01 至 1994-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9102899&HistoricalAwards=false
• 关键词: Piggyback; OBS; Tomography; Study; East

This project will conduct two ocean-bottom seismometer tomography experiments in conjunction with an already funded two-ship mucti- channel seismic experiment on the East Pacific Rise south of the Garrett fracture zone. The ocean-bottom seismometer deployment in the first area will be used to constrain the cross-axis structure including the axial low-velocity zone and the pattern of upper crustal velocity variation. The second deployment will determine the continuity of the axial low-velocity zone across the overlapping spreading center at 15.9 degrees south.

本项目将进行两次海底地震仪层析成像 实验与已经资助的两艘多船， 东太平洋海隆以南的海峡地震实验 加勒特断裂带。 年海底地震仪的部署 第一区域将用于约束交叉轴结构 包括轴向低速区和上部 地壳速度变化 第二次部署将决定 轴向低速区的连续性 南纬15.9度重叠扩张中心。