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

pi将在马里亚纳弧地区进行HMR-1声纳测绘、磁学、重力测量和疏浚的实地计划，以扩大现有数据库的面积。该测绘被认为是厘清与俯冲相关过程的复杂性质和顺序的必要的第一步，对边际项目中俯冲工厂计划的目标至关重要。该调查将在南马里亚纳俯冲系统的两个区域-弧前和弧后进行。这项工作将完成和补充已经从弧线获得的类似地球物理数据（侧扫声纳，磁）。通过疏浚收集的样本将被其他工人用于地球化学分析。

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.