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首页> 外文会议>International Conference on Hydroinformatics >APPLICATIONS OF POINT AND DISTRIBUTED RAINFALL TO PHYSICS-BASED FULLY DISTRIBUTED MODELS FOR AN INTENSIVE AGRICULTURAL CATCHMENT
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APPLICATIONS OF POINT AND DISTRIBUTED RAINFALL TO PHYSICS-BASED FULLY DISTRIBUTED MODELS FOR AN INTENSIVE AGRICULTURAL CATCHMENT

机译：点和分布式降雨在基于物理的集约化农业集约化模型中的应用

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摘要

This paper considers the effectiveness and uncertainties inherent in different rainfall types in order to understand the impact of land use and climate change on an intensive agricultural catchment, the River Tone in the South West region of the United Kingdom. Two physics-based distributed models, which are structured in a generic DTM derived model and a MIKE SHE/11 model, were applied for this study. Rainfall from raingauges mostly maintained by the Environment Agency and the UK NIMROD radar were considered as point and distributed measurements, respectively. Also radar rainfall from different time - space resolutions was employed. In recent years floods that have occurred in the Tone catchment have been modified as occurred on a small field by land use effects where excess water has caused surface soil wash and cultivated crop loss from fields, and the rainfall was not able to be being recorded by raingauges as it happened very small area and the duration is short. In order to understand the rainfall generating such small scale floods and the flooding mechanism, areal rainfall measurements and a model structure, which can reflect the special variations in surface run-off, are becoming increasingly important. Therefore, two distributed models were implemented in order to reflect the physical and hydrological features of the catchment and to aid the evaluation of catchment flood response subject to a variety of land-use management practices.
机译：本文考虑了不同降雨类型固有的有效性和不确定性，以了解土地利用和气候变化对集约型农业流域（英国西南地区的River Tone）的影响。这项研究使用了两个基于物理的分布式模型，这些模型以通用DTM派生模型和MIKE SHE / 11模型构成。来自雨量计的降雨主要由环境局和英国NIMROD雷达维护，分别视为点和分布式测量。还采用了来自不同时空分辨率的雷达降雨。近年来，由于土地利用的影响，改调了在Tone流域发生的洪水，使之变成了在小块田地上的耕作，过量的水造成了表层土壤的冲刷和田间耕作作物的损失，而降雨却无法记录下来。由于雨量计的面积很小，持续时间短。为了了解产生这种小规模洪水的降雨和洪水机理，能够反映地表径流特殊变化的区域降雨测量和模型结构变得越来越重要。因此，实施了两个分布式模型，以反映流域的物理和水文特征，并根据各种土地利用管理实践，帮助评估流域的洪水响应。

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