Collaborative Research: Analysis of Broadband Seismic Measurements from the Ocean Seismic Network Pilot Experiment

协作项目OCE 98-19615Vernon OCE 99-000943 Collins推荐的项目将检查与海洋地震台网试点实验相关的地震仪的比较性能，海洋地震台网试点实验是安装在位于夏威夷瓦胡岛西南225公里处的ODP843B洞及其周围的OSN-1站点的三个地震仪。这些地震仪安装在钻孔中，埋在泥中(淤泥)，并安装在海底沉积物的顶部。该项目将计算所有三个地震仪的地震可探测性(信噪比)，并将它们与其他陆基地震系统和更早的海洋地震系统的结果进行比较。此外，还将侧重于计算和分析埋藏在泥浆中的地震仪和海底地震仪的环境噪声频谱，特别是关于沉积物横波共振、柔度以及海底洋流和重力波影响的噪声频谱。对此数据的评估将导致对修订设计和未来OSN安装提出建议。*

Collaborative ProjectOCE 98-19615VernonOCE 99-000943CollinsThe recommended project will examine the comparative performance of seismometers associated with the Ocean Seismic Network Pilot Experiment, a group of three seismometers installed at the OSN-1 site in and around ODP Hole 843B, located 225 km SW of Oahu, Hawaii. These seismometers were installed in the borehole, buried in mud (ooze), and on top of the seafloor sediments. The project will compute the detectability of earthquakes (signal-to-noise ratio) for all three seismometers, and compare them to results from other land-based seismic systems and earlier ocean-based seismic systems. In addition, there will be a focus on computing and analyzing the ambient noise spectra of the mud-buried and seafloor seismometers, especially in regards to sediment shear-wave resonances, compliance, and the effects of bottom currents and gravity waves. Evaluation of this data will lead to recommendations for revised designs and future OSN installations.***