CSEDI Collab. Research: Modeling the Earth's Deep Interior: An Integrative Approach

CSEDI 合作。

• 批准号: 0112289
• 负责人: T. Guy Masters
• 金额: $ 15.79万
• 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: Continuing Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-01-01 至 2005-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0112289&HistoricalAwards=false
• 关键词: CSEDI; Collab.; Research; Modeling; Earth

Masters Weidner The vision of a "standard model" which unifies many now-distinct disciplines within the Earth sciences is one that an increasing number of geoscientists are beginning to share, largely because of recent advances in mantle flow-modeling which begin to integrate large-scale seismological models, mineral physics data, and geodynamical modeling. Unfortunately, our current progress is slow because of artificial boundaries between disciplines and the tradition of small groups working in relative isolation. As part of an ongoing CSEDI grant, seismic data sets, codes, and models have been compiled which, in principle, allow the global seismologist a more synoptic view of the problem of determining the 3D structure of the Earth. This program is now at the point where there is near-consensus on a seismological "background" (or long-wavelength) 3D model. A collaboration between UCSD and Harvard (with significant involvement of UC Berkeley) will work towards establishing the background elastic model (which includes a 1D model). While the outcome of this research will be a specific model (or family of models), the "reference" data sets will be made available to the community (as well as a wide variety of other shared data sets) to ensure broad participation in the construction of reference models. Most importantly, the current program will be extended beyond seismology and initially will include a mineral physics component (SUNY) and a flow-modeling component (U. Toronto). Tools and data sets will be developed that allow forward modeling of a wide range of potential compositions for conditions which span the mantle. The goal is to make these tools sufficiently easy to use so that non-specialists can test compositional models directly against seismic and geodetic data.

魏德纳大师 越来越多的地球科学家开始认同“标准模型”的愿景，该模型将地球科学中许多现在不同的学科统一起来，这主要是因为地幔流模型的最新进展，它开始整合大规模地震模型、矿物物理数据和地球动力学模型。不幸的是，由于学科之间的人为界限以及小团体相对孤立地工作的传统，我们目前的进展缓慢。作为正在进行的 CSEDI 拨款的一部分，地震数据集、代码和模型已经编译完毕，原则上使全球地震学家能够更全面地了解确定地球 3D 结构的问题。该计划目前已在地震“背景”（或长波长）3D 模型上接近达成共识。 加州大学圣地亚哥分校和哈佛大学（加州大学伯克利分校的大力参与）之间的合作将致力于建立背景弹性模型（其中包括一维模型）。虽然这项研究的结果将是一个特定的模型（或模型系列），但“参考”数据集将向社区提供（以及各种其他共享数据集），以确保广泛参与参考模型的构建。最重要的是，当前的计划将扩展到地震学之外，最初将包括矿物物理部分（纽约州立大学）和流动模拟部分（多伦多大学）。将开发工具和数据集，以便对跨越地幔的条件的各种潜在成分进行正向建模。 目标是使这些工具足够易于使用，以便非专业人员可以直接根据地震和大地测量数据测试组合模型。