Hysteresis and scale in catchment storage, flow and transport
Hysteresis and scale in catchment storage, flow and transport
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DOI：
10.1002/hyp.10511
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发表时间：
2015-07
影响因子：
3.2
通讯作者：
J. Davies;K. Beven
中科院分区：
文献类型：
--
作者：
J. Davies;K. Beven
封闭问题的代表水文边界通量给定的系统状态已被描述为科学的“圣杯”水文。由于水文系统中流速和速度之间的差异，这种储存状态和通量之间的关系应该是滞后的和尺度相关的--有效地说，流速是由储存控制的，而速度是由储存赤字控制的。为了更好地理解这些关系的本质，我们使用了一种新的水文模型（多相互作用路径模型或MIP模型）来探索流域尺度对蓄流输运关系及其非线性的影响。在瑞典的Gårdsjön流域，MIP模型已被证明能够对水流和示踪剂（即速度和速度）进行可接受的模拟。在这项研究中，该模型被用来模拟Gårdsjön流域的缩放版本，使我们能够第一次调查规模对存储-流量-传输关系中的非线性的影响，并帮助我们引导对科学水文“圣杯”的追求。模拟揭示了尺度对水流响应的影响，包括蓄泄滞后的性质及其与前期蓄存的联系;平均输出行程时间随尺度的分形系统变化;尺度对输入、输出和蓄存停留时间分布的影响;蓄存和输出行程时间之间的关系以及蓄存和地下水位滞后之间的联系。© 2015作者。出版社：John Wiley & Sons Ltd
The closure problem of representing hydrological boundary fluxes given the state of the system has been described as the scientific ‘Holy Grail’ of hydrology. This relationship between storage state and flux should be hysteretic and scale dependent because of the differences between velocities and celerities in a hydrological system—effectively velocities are storage controlled, and celerities are controlled by storage deficits. To improve our understanding of the nature of these relationships a new hydrology model is used (the Multiple Interacting Pathways or MIPs model) to explore the influence of catchment scale on storage–flow–transport relationships, and their non‐linearities. The MIPs model has been shown to produce acceptable simulations of both flow and tracer, i.e. of both celerities and velocities, at the Gårdsjön catchment in Sweden. In this study the model is used to simulate scaled versions of the Gårdsjön catchment to allow us for the first time to investigate the influence of scale on the non‐linearities in storage–flow–transport relationships, and help us steer the quest for the scientific hydrological ‘Holy Grail’. The simulations reveal the influence of scale on flow response in the nature of storage–discharge hysteresis and its links with antecedent storage; fractal‐like systematic change of mean output travel times with scale; the effect of scale on input, output and storage residence time distributions; hysteric relations between storage and output travel times and links between storage and water table level hysteresis. © 2015 The Authors. Hydrological Processes published by John Wiley & Sons Ltd.