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

该项目的目的是检验这一假设，即中央Amonaly磁高的近底特征既反映了新火山区的宽度，也反映了快速扩张的东太平洋海隆上熔岩侵位的空间分布。 该地区的地震数据表明，2A层在上升轴1至2公里内的厚度增加了一倍，这表明熔岩可能离轴分布。 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侵位分布之间的相关性。 将在位于东太平洋海隆轴线北纬9度30分和北纬9度50分的10 x10公里区域进行详细的多传感器近底调查。 自动驾驶汽车ABE将收集高分辨率的磁力数据，近海底DSL-120侧扫声纳将绘制该地区的火山和构造特征。 “杰森”号将用于地面实况海底熔岩接触，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.