Investigation of Local Seismicity Recorded by the MELT Array

利用MELT海底地震仪实验的数据，可以对东南东太平洋隆起300公里（南纬15至18度）两侧400公里的离轴区域进行全面的地震活动性分析。该实验在7个月的时间里部署了51个地震仪，为探测一个超高速扩张脊的构造和岩浆事件以及地震活动提供了机会。这项研究有两个组成部分。首先是描述海脊轴线及其附近的地震活动特征，将地震活动与轴向带的火山和构造特征的沿走向变化联系起来，并利用地震活动的空间和时间模式来评估海洋地壳形成基本过程的现有模型。第二个组成部分是评估板内地震活动的水平和性质及其与海底年龄、海山、重力线或其他构造特征的相关性。

9712176 Shen A comprehensive analysis of the local seismicity along a 300 km-long stretch of the Southern East Pacific Rise, 15 to 18 degrees south, and off-axis out to 400 km on either flank is possible using data from the MELT ocean-bottom seismometer experiment. This experiment deployed 51 seismometers for 7 months, and provides an opportunity to detect tectonic and magmatic events and intraplace seismicity at a super-fast spreading ridge. The study has two components. The first is to characterize seismic activity at and near the ridge axis, to relate seismicity to variations along-strike in volcanic and tectonic features of the axial zone, and to use the spatial and temperal patterns of seismicity to evaluate the existing models of the basic processes of the formation of the ocean crust. The second component is to assess the level and nature of intraplate seismicity and its correlation with seafloor age, seamounts, gravity lineations, or other tectonic features.