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

合作研究：海洋地震台网先导实验宽带地震测量分析

• 批准号: 9819615
• 负责人: Frank Vernon
• 金额: $ 3.95万
• 依托单位: University of California-San Diego Scripps Inst of Oceanography
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-03-01 至 2002-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9819615&HistoricalAwards=false
• 关键词: Collaborative; Research; Analysis; Broadband; Seismic

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.***

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，该试验是一组安装在ODP 843B孔及其周围的OSN-1站点的三个地震仪，位于夏威夷瓦胡岛西南225公里处。这些地震仪安装在钻孔中，埋在泥浆（软泥）中，以及海底沉积物的顶部。该项目将计算所有三个地震仪的地震可探测性（信噪比），并将其与其他陆基地震系统和早期海洋地震系统的结果进行比较。此外，还将重点计算和分析泥埋地震仪和海底地震仪的环境噪声谱，特别是关于沉积物剪切波共振、顺应性以及底流和重力波的影响。对这些数据的评估将导致对修改设计和未来OSN安装的建议