Subduction Factory Studies in the Southern Mariana Convergent Margin: Side-Scan, Geophysical and Petrologic Investigations

PI将进行HMR-1声纳测绘、磁力学、重力测量和马里亚纳岛弧地区疏浚的实地项目，以扩大该地区现有的数据库。测绘是必要的第一步，以整理出的复杂性质和序列的俯冲相关的过程和关键的目标的俯冲工厂倡议内的MARGINS计划。调查将在南马里亚纳俯冲系统的两个区域进行-弧前和弧后。这项工作将完成和补充已经从弧中获得的类似地球物理数据（侧扫声纳、磁力）。通过疏浚收集的样品将由其他工作人员用于地球化学分析。

The PIs will undertake a field program of HMR-1 sonar mapping, magnetics, gravity measurements, and dredging in the Mariana arc region to enlarge the existing database in area. The mapping is justified as a necessary first step toward sorting out the complex nature and sequence of subduction-related processes and critical to the goals of the Subduction Factory initiative within MARGINS program. The survey will be conducted in two regions of the southern Mariana subduction system - in the forearc and the backarc. The work will complete and complement similar geophysical data (side scan sonar, magnetics) already obtained from the arc. The samples collected by dredging will be used for geochemical analyses by other workers.