Generalized Transport Models in Earth Surface Dynamics: Novel Experiments for Demonstrating and Quantifying Non-local Transport

地球表面动力学中的广义输运模型：展示和量化非局部输运的新实验Vaughan Voller，Efi Foufoula-Georgiou，Kimberly Hill，Chris Paola of MinnerotaEAR-1318593 ABSTRACT理解环境通量在地球上的输运，如沉积物、示踪剂、颗粒和污染物？S对于建立准确的地貌输运模型，量化自然和人为变化下的景观演变，以及通过解释地层记录来推断过去的地表条件至关重要。在历史上，地貌输运模型用瞬时局部性质来表示颗粒或泥沙通量，例如表面高程或局部速度的梯度。河流、山坡和三角洲系统中泥沙和颗粒运移的准确模型是地球表面动力学研究的核心，对于基于准确预测模型指导环境管理具有实际意义。人们对地球系统的异质性和连通性的日益认识导致了新的理论构造，其中包括地貌运输中的非局部性和集体行为。拟议的新颖而简单的实验系统有望提供第一个明确的证据，证明非本地运输在沉积物和颗粒物制度中的作用。将这些实验的结果与非局部和异常扩散特性的评估联系起来，将使研究人员能够更有信心地预测何时使用非局部模型，以及在这些模型中使用哪些参数。这些信息将对我们了解形成和控制地球表面环境演变的沉积物颗粒运输的能力产生革命性的影响。拟议中的实验是新颖的，将使用3D打印技术进行构建。PIS还提出了原型？玩具实验？将为异常扩散行为提供零设置时间桌面演示的系统。他们的计划是通过NCED目前的教育和博物馆联系来传播这些系统，特别是推进NCED的长期合作伙伴明尼苏达州科学博物馆的原型展览的开发。

Generalized Transport Models in Earth Surface Dynamics: Novel Experiments for Demonstrating and Quantifying Non-local TransportVaughan Voller, Efi Foufoula-Georgiou, Kimberly Hill, Chris PaolaUniversity of MinnesotaEAR-1318593ABSTRACTUnderstanding the transport of environmental fluxes, such as sediment, tracers, particulates, and pollutants, on the Earth?s surface is paramount for building accurate models of geomorphic transport, quantifying landscape evolution under natural and human-induced changes and for inferring past surface conditions from interpretation of the stratigraphic record. Historically, geomorphic transport models have expressed particulate or sediment flux in terms of instantaneous local properties, such as gradients in the surface elevation or local velocities. Accurate models of sediment and particulate transport in rivers, hillslopes, and deltaic systems are at the heart of Earth surface Dynamics research as well as of practical significance in guiding environmental management based on accurate predictive models. The increasing awareness of the heterogeneity and connectivity of Earth systems has led to new theoretical constructs which embrace non-locality and collective behavior in geomorphic transport. The proposed novel and simple experimental systems promise to provide the first unambiguous evidence of the role of non-local transport in sediment and particulate regimes. Linking the results of these experiments to the evaluation of non-local and anomalous diffusion properties will allow researchers to more confidently predict when to use non-local models and which parameters to use in these models. This information will have a transformative impact on our ability to understand the transport of sediment particles that shape and control the evolution of the Earth-surface environment. The proposed experiments are novel and will be constructed using 3-D printing technology. PIs also propose to prototype ?toy experimental? systems that will provide zero set-up time desktop demonstrations of anomalous diffusion behaviors. Their plan is to disseminate these systems through the current NCED educational and museum contacts, and specifically advance the development of a prototype exhibit at the Science Museum of Minnesota, a long-time partner of NCED.