Seismic Structure and Tectonics of Oceanic Lithosphere and Upper Mantle

大洋岩石圈和上地幔的地震结构和构造

• 批准号: 9004750
• 负责人: Sean Solomon
• 金额: $ 15.88万
• 依托单位: Massachusetts Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-09-01 至 1993-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9004750&HistoricalAwards=false
• 关键词: Seismic; Structure; Tectonics; Oceanic; Lithosphere

This research is to do seismological studies of the thermal regime and dynamics of mid-ocean ridges and oceanic lithosphere and asthenosphere. The state of stress will be investigated by means of source mechanisms of earthquakes. Lateral heterogeneity of oceanic structure will be determined from studies of S, SS, and P-wave travel times. The objectives are to understand the relation of earthquake seismicity and source characteristics to the thermal and mechanical structure of oceanic lithosphere, to determine the 3-D seismic structure of the lithosphere and asthenosphere beneath the oceans, and to relate both types of observations to specific models for the processes of seafloor spreading and mantle convection.

这项研究是为了做地震学研究的热 洋中脊和大洋岩石圈的动态和动力学 和软流层 应力状态将通过以下方式进行研究： 地震震源机制方法。 横向不均匀性 海洋结构将从S，SS， 和P波传播时间 目标是了解 地震活动性与震源特征的关系 海洋岩石圈的热结构和力学结构， 确定岩石圈的三维地震结构， 海洋下面的软流圈，并将这两种类型的 对海底过程特定模型的观察 扩张和地幔对流。