The MELT Project - Part A: WHOI Ocean Bottom Seismology Data Acquisition

9403409将部署一个由15台海底地震仪组成的网络，为期两个月，研究胡安德富卡海脊奋进段微震活动的分布和特点。该阵列将横跨主喷口区域附近的轴向山谷和西侧，长约15公里。该实验的目的是描述离岸微震活动的分布和性质，并利用这些数据来评估和改进现有的大洋地壳在偏离轴线移动时的构造演化模型，并根据地震活动的最大深度估计脆韧性转变的深度，作为距离脊轴的函数。***

9403409 Purdy The distribution and characteristics of microearthquake activity across the Endeavour 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 offaxis 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. ***