Central Anomaly Magnetization High: Constraints on the Volcanic Construction and Architecture of Young Upper Oceanic Crust EPR 9 degree - 10 degree N

该项目的目的是验证一个假设，即中央阿莫纳利磁高压的近底特征反映了新火山带的宽度和快速扩张的东太平洋隆起上熔岩位的空间分布。该地区的地震资料显示，在离上升轴1 ~ 2 km的范围内，2A层的厚度增加了一倍，表明岩浆可能离轴分布。该项目旨在验证离轴熔岩沉积中心的存在，并建立磁异常形状与熔岩就位分布之间的相关性。将在位于北9度30分和北9度50分的东太平洋隆起轴线上的两个10x10公里区域进行详细的多传感器近底测量。自动驾驶车辆ABE将收集高分辨率磁数据，近底DSL-120侧扫声纳将绘制该地区的火山和构造特征。ROV Jason将用于海底熔岩接触的地面真相，并收集样本。

The objective of this project is to test the hypothesis that the near-bottom character of the Central Amonaly Magnetic High reflects both the width of the neovolcanic zone and the spatial distribution of lava emplacement on the fast spreading East Pacific Rise. Seismic data in the area show that layer 2A doubles in thickness within 1 to 2 km of the rise axis which suggests the possibility of lava disposition off-axis. This project seeks to verify the presence of off-axis lava depocenters and to establish the correlation between the shape of the magnetic anomaly and the distribution of lava emplacement. A detailed multi-sensor near-bottom survey will be conducted i tow 10x10 km areas located on the axis of the East Pacific Rise at 9 degrees 30 minutes north and at 9 degrees 50 minutes north. The autonomous vehicle ABE will collect high resolution magnetics data and near-bottom DSL-120 sidescan sonar will map the volcanic and tectonic features in the area. The ROV Jason will be used to ground-truth seafloor lava contacts, and to collect samples.