COLLABORATIVE RESEARCH: Scale Dependence and Scale Invariance in Catchment Hydrologic Processes

该项目将汇集理论水文学的一个跨学科团队，通过应用于基础局部尺度物理的非线性数学描述的定标程序，解决严格定义描述径流产生、净补给或地下水流动的宏观、流域尺度参数之间的关系的问题。该项目的目标是：(1)利用空间数据分析中的严格方法，在地方尺度上高度可变的系统中，推动流域尺度的、基于过程的径流生成模型。(2)发展流域尺度空间变异性条件随机模型的改进方法。(3)研究非均匀介质中地下水流动预测模型在局部尺度速度场中尺度不变性的一般结果。所获得的结果将有助于理解基本水文过程从野外小区实验到区域或流域响应的尺度依赖性和尺度不变性。

This project will bring together an interdisciplinary team in theoretical hydrology to address the problem of defining rigorously the relation between macroscopic, catchment-scale parameters describing runoff generation, net recharge, or groundwater flow through scaling procedures applied to the non-linear mathematical description of the underlying, local-scale physics. The project objectives are: (1) To drive, using rigorous methods in the analysis of spatial data, a catchment-scale, process-based model of streamflow generation in systems that are highly variable at the local scale. (2) To develop improved methods of conditioning stochastic models of catchment-scale spatial variability. (3) To investigate the general consequences of scale-invariance in the local-scale velocity field for predictive models of subsurface water flows in heterogenous media. The results obtained will contribute to understanding the scale dependence and scale invariance of fundamental hydrologic processes as they are resolved from the field plot experiment to the regional or drainage-basin response.//