Workshop on coupling of tectonic and surface processes across spatio-temporal scales

跨时空尺度构造与地表过程耦合研讨会

• 批准号: 1746021
• 负责人: Luc Lavier
• 金额: $ 9.52万
• 依托单位: University of Texas at Austin
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-09-01 至 2018-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1746021&HistoricalAwards=false
• 关键词: Workshop; coupling; tectonic; surface; processes

The discovery of feedbacks between geomorphic and tectonic processes has revolutionized the understanding of the mechanics of mountain building and of the interactions between landscapes and climate. While the basics are established, the details of coupling remain debated. Separating the effects of climate and erosion from the effect of tectonics in the geological record remains a challenge. One approach to study these interactions are computer models that couple surface and tectonic processes in order to quantify the effects of a wide range of geologic and geomorphic parameters. This allows testing hypotheses derived from field observations and to develop new surface process-tectonics hypotheses. This project supports a workshop that gathers leading U.S. and international geoscientists who use and develop long-term tectonic and landscape evolution models to discuss numerical techniques that have the potential of revolutionizing the understanding of the interactions between surface processes and tectonics, as well as solve some of the most difficult technical challenges for developing models that require coupling over highly disparate spatial and temporal scales. The workshop advances desired societal outcomes by participation of women and underrepresented minorities and development of a diverse, globally competitive STEM workforce through engagement of early career scientists, post-doctoral scholars, and students in the workshop.This project supports the participation of U.S. and international scientists in a workshop, which will be held in 2018 at the University of Texas at Austin. The first goal of the workshop is to work to develop the next generation of coupled surface processes and long-term tectonic models to explore key questions linking tectonics, climate, and landscape evolution. This will require defining the numerical techniques used by the two communities and identifying the challenges in coupling across different temporal and spatial scales. The second goal is to strengthen the U.S. long-term tectonics modeling community and build new links/collaborations between the long-term tectonics community at NSF-supported Computational Infrastructure for Geodynamics and the surface processes community at NSF-supported Community Surface Dynamics Modeling System. Bringing together the two communities will do more than just facilitate code development; each community can help the other with the science by bringing new perspective to existing questions and ideas. The workshop participants will discuss specific, immediate questions for surface process and lithospheric deformation codes, including: (1) the role of topography and topographic stresses; (2) physically based erosion laws rather than diffusion based; (3) Inclusion of the seismic cycle in tectonic models; (4) inclusion of the seismic cycle in landscape evolution models; (5) the importance of 3D heterogeneity in material properties in both geodynamic and geomorphologic modelling; and (6) incorporation of atmosphere as a third component to models.

地貌和构造过程之间的反馈发现彻底改变了人们对山地建筑机制以及景观与气候之间相互作用的理解。在建立基础知识的同时，耦合的细节仍在争论中。将气候和侵蚀的影响与地质记录中构造的影响分开是一个挑战。研究这些相互作用的一种方法是将表面表面和构造过程的计算机模型，以量化广泛的地质和地质参数的影响。这允许测试从现场观察得出的假设，并开发新的表面过程涉及假设。该项目支持一个研讨会，该研讨会聚集了美国和国际地质学家，他们使用和开发了长期的构造和景观演化模型，以讨论具有彻底改变表面过程与构造过程之间相互作用的理解的数值技术，并为开发高度差异的Spait Scales和Persialal Scales耦合而言是一些最困难的技术挑战。该研讨会通过妇女的参与和代表性不足的少数群体的参与以及通过早期职业科学家的参与，博士后学者和研讨会的学生参与来提高所期望的社会成果。该项目支持美国和国际科学家参加在2018年在Ancions in Sillives in Sillisions in Sillisy of Sinsivers Sinsiverssions的项目。研讨会的第一个目标是努力开发下一代耦合的表面过程和长期构造模型，以探讨将构造，气候和景观演变联系起来的关键问题。这将需要定义两个社区使用的数值技术，并确定跨不同时间和空间尺度耦合的挑战。第二个目标是加强美国的长期构造建模社区，并在NSF支持的地球动体学计算基础架构和NSF支持的NSF支持的社区社区表面动态模型系统的NSF支持计算基础架构之间建立新的联系/协作。将这两个社区汇集在一起​​不仅会促进代码开发；每个社区可以通过为现有问题和思想带来新的观点来帮助对方的科学。研讨会参与者将讨论有关表面过程和岩石圈变形代码的特定直接问题，包括：（1）地形和地形应力的作用； （2）基于物理的侵蚀定律，而不是基于扩散的； （3）将地震循环纳入构造模型； （4）将地震周期纳入景观演化模型； （5）3D异质性在地球动力学和地球学建模中材料特性中的重要性； （6）将大气作为模型的第三个组成部分。