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A Community Experiment to Record the Full Seismic Wavefield in Oklahoma

机译：俄克拉荷马州全面地震波峰的社区实验

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摘要

Observing the full seismic wavefield by deploying large numbers of seismometers (also known as large-N deployments) and analyzing the resultant large datasets is now more feasible than ever before as a result of advances in instrumentation, computational power, and data analysis techniques. In 2015, the Incorporated Research Institutions for Seismology (IRIS) proposed a field deployment to provide the research community with experience in new techniques for obtaining full wavefield observations using a range of instrumentation (three-component [3C] nodal-style sensors, broadbands, and infra-sound) at multiple spatial and temporal scales. The goals of the experiment were to demonstrate the field use of the nodal sensors, contribute a compelling dataset that could be analyzed through innovative techniques, and evaluate the performance of new array designs and instruments (particularly the 3C nodes). The resulting IRIS Wavefields Demonstration Community Experiment, conducted in north-central Oklahoma during the summer of 2016, collected data that were immediately made open and available at the IRIS Data Management Center (network code YW) and provided a unique and scientifically rich dataset to advance our understanding of the full seismic wavefield. A key finding was that by burying the 3C nodal sensors used in the deployment, substantially lower horizontal noise levels were achieved across a wide range of periods spanning 0.01-100 s.
机译：通过部署大量地震仪（也称为大型N部署）来观察全震动波场，并分析所得到的大型数据集现在比以往任何时候都更加可行，因为仪器计算，计算能力和数据分析技术的进步。 2015年，纳入研究机构的地震学（IRIS）提出了一个现场部署，为研究界提供了使用一系列仪器获得完整波场观测的新技术的经验（三分组件[3C] Nodal风格传感器，宽带，和infra-sound）在多个空间和时间尺度。实验的目标是展示节点传感器的现场使用，贡献可以通过创新技术进行分析的引人注目的数据集，并评估新的阵列设计和仪器的性能（特别是3C节点）。由此产生的虹膜波峰演示社区实验，在2016年夏季，在俄克拉荷马州北部，收集的数据立即开放，可在IRIS数据管理中心（网络代码YW），并提供了一个独特的科学富裕的数据集以推进我们对全地震波峰的理解。一个关键发现是通过掩埋部署中使用的3C节点传感器，在跨越0.01-100秒的各个周期内实现了大幅下降的水平噪声水平。

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