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首页> 外文期刊>Journal of Geophysical Research. Biogeosciences >Monitoring Pacific Ocean seismicity from an autonomous hydrophone array
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Monitoring Pacific Ocean seismicity from an autonomous hydrophone array

机译：通过自主水听器阵列监测太平洋地震活动

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Since May 1996, an array of autonomous hydrophone moorings has been continuously deployed in the eastern equatorial Pacific to provide long-term monitoring of seismic activity, including low-level volcanic signals, along the East Pacific Rise between 20 degreesN and 20 degreesS and the Galapagos Ridge. The instruments and moorings were designed to continuously record low-frequency acoustic energy in the SOFAR channel for extended periods and produce results comparable to those previously derived by using the U,S. Navy Sound Surveillance SS stem (SOSUS) The technology and methodology developed for this in the northeast Pacific. The technology and methodology developed for this experiment, including instrument design, mooring configuration, analysis software, location algorithms (with an analysis of errors), and a predicted error field, are described in detail. Volcanic activity is observed throughout the Pacific, along with seismicity along transform faults, subduction zones, and intraplate regions. Comparison data sets indicate detection thresholds and accuracy better than the land networks for open ocean areas and results comparable to. or better than, SOSUS, Volcanic seismicity along the fast spreading East Pacific Rise appears similar in the Northeast Pacific but with much shorter durations. to documented examples In One example from the intermediate spreading Galapagos Ridge is comparable to northeast Pacific examples? and several episodes of activity were observed in the Wilkes Transform Fault Zone. A site of continuing off-axis seismicity is located near 18 degreesS and 116 degreesW. Isolated intraplate earthquakes are observed throughout the study area. Earthquake information from this experiment and future observations will be provided through the World Wide Web and earthquake data centers. [References: 36]
机译：自1996年5月以来，赤道东太平洋一直在不断部署一系列自主的水听器系泊设备，以长期监测北纬20度到20度之间的东太平洋上升带以及加拉帕戈斯群岛的地震活动，包括低层火山信号。岭。仪器和系泊设备旨在长时间连续记录SOFAR通道中的低频声能，并产生与以前使用U，S得出的结果相当的结果。海军声音监视SS干（SOSUS）为此在东北太平洋开发的技术和方法。详细介绍了为此实验开发的技术和方法，包括仪器设计，系泊配置，分析软件，定位算法（带有错误分析）和预测的错误字段。在整个太平洋地区都观察到火山活动，以及沿转换断层，俯冲带和板内区域的地震活动。比较数据集显示的检测阈值和准确性优于陆地网络，适用于远洋地区，其结果可比。甚至比SOSUS还要好，沿着快速扩散的东太平洋上升带的火山地震活动在东北太平洋似乎也很相似，但持续时间要短得多。记录实例在中间扩散的加拉帕戈斯山脊的一个实例与东北太平洋的实例相当吗？在威尔克斯变形断层带中观察到了几次活动。轴外地震活动持续的地点位于18°S和116°W附近。在整个研究区域内都观察到了孤立的板内地震。该实验和未来观察所得的地震信息将通过万维网和地震数据中心提供。 [参考：36]

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