Simultaneous Consideration of Seismic Tomography and Flow

同时考虑地震层析成像和流动

• 批准号: 9205390
• 负责人: Richard O'Connell
• 金额: $ 26.74万
• 依托单位: Harvard University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-09-15 至 1997-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9205390&HistoricalAwards=false
• 关键词: Simultaneous; Consideration; Seismic; Tomography; Flow

Until now, seismic Modelling of three dimensional Earth structure and the study of mantle convection have been performed separately, with the latter occasionally employing, a posteriori, the results of the former. One objective of this project is to further advance understanding of mantle dynamics by performing simultaneous inversions of long-period seismic waveform data and geodynamic data consisting of the observed plate velocities and nonhydrostatic geoid. The second objective is to further refine previous treatments of viscous flow in the mantle. The simultaneous consideration of seismic and geodynamic data will help to stabilize the seismic inverions in those geographical areas that are poorly resolved and it will also allow one to address important issues in solid-Earth physics and geodyamics.

到目前为止，三维地球结构的地震模拟和地幔对流的研究是分开进行的，后者偶尔会采用前者的后验结果。该项目的一个目标是通过对长周期地震波形数据和由观测到的板块速度和非静力大地水准面组成的地球动力学数据进行同步反演，进一步提高对地幔动力学的理解。第二个目标是进一步改进以前对地幔中粘性流动的处理。同时考虑地震和地球动力学数据将有助于稳定那些地理区域的地震反演，这也将使人们能够解决固体地球物理学和地球动力学中的重要问题。