Collaborative Research: Time Dependence of Broadband Ambient Seismic Noise on the Ocean Floor

推荐的项目将分析海洋地震台网试点实验中B3S2井眼地震仪获得的宽带环境噪声数据的频谱。海洋地震台网试点实验是一组3台地震仪，安装在ODP 843B井及其周围的OSN-1站点，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。该项目将重点计算和分析环境噪声频谱，特别是频谱的时间依赖性，频谱与环境数据(如。风、大气压和其他天气现象、海况和海底海流)，并与埋藏和海底OSN-1地震仪以及以前海底和海底地震仪数据集的频谱进行比较。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

OCE 98-19539StephenThe recommended project will analyze the spectra of broadband ambient noise data acquired on the borehole B3S2 seismometer in 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 focus on computing and analyzing the ambient noise spectra, especially in regards to the spectral time dependence, correlation of the spectra with environmental data (eg. wind, atmospheric pressure and other weather phenomena, sea state, and bottom currents), and comparison of the spectra with those from the buried and seafloor OSN-1 seismometers and previous seafloor and sub-seafloor seismometer data sets. Evaluation of this data will lead to recommendations for revised designs and future OSN installations.***