Microearthquake Activity Across the Endeavour Segment of the Juan De Fuca Ridge

在两个月的时间里，将部署一个由15个海底地震仪组成的网络，研究Juan de Fuca山脊Endeavor部分微地震活动的分布和特征。该阵列将跨越主要通风口附近的轴向山谷和西部侧翼，延伸约15公里。实验的目的是表征离轴微地震活动的分布和性质，并利用这些数据来评估和完善现有的年轻海洋地壳在离轴移动时的构造演化模型，并从地震活动的最大深度估计脆性-韧性过渡的深度，作为与脊轴距离的函数。* * *

9403668 Wilcock The distribution and characteristics of microearthquake activity across the Endeavor segment of the Juan de Fuca ridge will be studied by deploying a network of 15 ocean bottom seismometers for a two month period. The array will span the axial valley in the vicinity of the main vent field and the western flanks out to about 15 km. The objectives of the experiment are to characterize the distribution and nature of off- axis microearthquake activity and to use these data to evaluate and refine existing models of the tectonic evolution of yound oceanic crust as it moves off axis, and to estimate the depth of the brittle-ductile transition from the maximum depth of seismicity as a function of distance from the ridge axis. ***