RUI: Search for a Stochastic Background of Gravitational Waves Using the Normal Modes of the Earth (Physics)

笼罩在宇宙中的背景辐射为宇宙的历史提供了重要的线索，甚至可以影响它的进化。应通过观测地球的正常模态，在兆赫频率范围内寻找重力辐射的背景。IDA项目全球地震仪网络收集的大约200个台站年的数据将被分析，以寻找地球四极模式的任何残余激励。此外，计算已知地面源对这些模态的激发水平将有助于评估地球作为引力波探测器的最终用途。

Background radiations which bathe the Universe provide important clues to the history of the Universe and can even influence its evolution. A search for a background of gravitational radiation in the mHz frequency range by observing the normal modes of the earth shall be undertaken. The approximately two hundred station-years of data collected by the Project IDA global network of seismometers will be analyzed to look for any residual excitations of the quadrupole modes of the earth. In addition a calculation of the level of excitations of these modes by known terrestrial sources will facilitate the evaluation of the ultimate usefulness of the earth as a gravitational wave detector.