Modeling hyporheic zone characteristics in alternate bars under different stream flow, ambient groundwater and sediment anisotropy.

The data is related to the paper \"The Effect of Streamflow, Ambient Groundwater, and Sediment Anisotropy on Hyporheic Zone Characteristics in Alternate Bars\" published by Monofy, A., & Boano, F. (2021) in the journal of water resources research (WRR). The study is based on a numerical model of hyporheic flow in a built synthetic river reach with imposed alternate bars geometry. Five river flow discharges are investigated, and under each discharge value, three groundwater flow conditions are examined; neutral condition, where there is no groundwater flux on the bottom of the domain; losing condition, where the groundwater domain is losing flow through its bottom (to an imaginary aquifer); gaining condition, where the groundwater domain is gaining flow through its bottom (from an imaginary aquifer). In case of gaining and losing conditions different values of groundwater are tried by creating different simulations for each specific river flow and groundwater condition (in total 43 simulations). The data are organized as follows; five major files represent five river flows, in each file, there are three sub-major files representing three groundwater conditions (neutral, gaining, and losing). Inside neutral files, the data obtained from the surface water modeling as well as groundwater modeling and particle tracking are provided in .csv files. while for losing and gaining conditions, the files are subdivided based on the value of imposed groundwater flow. The .csv files contain the pressure heads on streambed, negative fluxes into the streambed, positive fluxes out of the streambed which can be used to map the overall flux distribution through the bed, and finally the results of particles tracking, in which each pathline of the hyporheic flux is defined with its associated characteristics, as residence time, maximum depth, hyporheic flux ...etc.本数据集关联由Monofy, A.与Boano, F.于2021年发表于《Water Resources Research》（WRR）的论文《交错沙坝中河道流量、环境地下水与沉积物各向异性对潜流带（Hyporheic Zone）特征的影响》（英文原标题："The Effect of Streamflow, Ambient Groundwater, and Sediment Anisotropy on Hyporheic Zone Characteristics in Alternate Bars"）。本研究基于带有预设交错沙坝（Alternate Bars）几何形态的人工合成河段潜流（Hyporheic Flow）数值模型展开，共考察5种河道流量工况；每种流量下设置3种地下水流动条件：中性条件，即研究区域底部无地下水通量交换；排泄条件，即地下水系统通过底部向假想含水层排泄水流；补给条件，即地下水系统通过底部从假想含水层获取水流。针对排泄与补给条件，研究针对每种特定的河道流量与地下水条件开展多组模拟以测试不同地下水通量取值，总计43组模拟。 数据集的组织形式如下：共包含5个主文件，分别对应5种河道流量工况；每个主文件下设有3个子主文件，分别对应3种地下水条件（中性、补给、排泄）。其中，中性条件文件内的地表水模拟、地下水模拟及粒子追踪（Particle Tracking）结果均以.csv格式存储。而排泄与补给条件的文件则根据预设地下水流量值进一步细分。 各.csv文件包含以下内容：河床测压水头（Pressure Heads）、流入河床的负通量、流出河床的正通量（可用于绘制河床整体通量分布），以及粒子追踪结果——潜流通量的每条迹线均附带其相关特征参数，如停留时间、最大埋藏深度、潜流通量等。