Collaborative Research: Next Generation Imaging of Magmatic Processes beneath the Juan de Fuca Ridge using MCS data

这项拟议的工作旨在扩大之前对Axial火山的研究，特别是2002年在那里的一次研究巡航，并试图：1)处理该巡航剩余的Axial多道地震(MCS)剖面；2)处理2002年邮轮的两条“重复”剖面，以确定2011年喷发后总体结构的任何差异，并利用新数据中额外的2公里偏移距更好地成像内部和基础岩浆室反射；3)重新处理从胡安德富卡海脊奋进号和裂隙段选择的沿轴和横轴剖面，以使用新方法检查地壳增生的差异；以及4)将这些方法扩展到沉积条件差和沉积严重的环境中的老化地壳。广泛的影响：拟议的工作将提供胡安德富卡山脊沿线，特别是横跨Axial火山的海底结构的更详细图像。该项目的成果将用于通过卡斯卡迪亚为位于里诺的内华达大学的国家地震实验室创建一次从海脊到俯冲的板块构造虚拟之旅，每年有许多K-8学生访问该实验室。一名博士后研究员将得到支持。

The proposed work aims to expand upon previous studies at Axial volcano, particularly a 2002 research cruise there, and seeks to: 1) process the remaining Axial multichannel seismic (MCS) profiles from that cruise; 2) process two "repeat" profiles from the 2002 cruise to identify any differences in overall structure after the 2011 eruption and better image the internal and basal magma chamber reflections using an additional 2 km of offset in the new data; 3) reprocess select along- and cross-axis profiles from the Endeavor and Cleft segments of the Juan de Fuca ridge to examine differences in crustal accretion using new methods; and 4) extend these methods to aging crust in poorly and heavily sedimented environments.Broader Impacts: The proposed work will provide more detailed images of sub-seafloor structure along the Juan de Fuca Ridge, particularly across Axial volcano. The results will lead to better understanding of the crustal processes at the mid-ocean ridge locations.The results of the project will be used to create a "ridge to subduction" virtual tour of plate tectonics through Cascadia for the National Seismological Laboratory at the University of Nevada, Reno which is visited annually by many K-8 students. A postdoctoral researcher will be supported.