Journal of Hydrology-Regional Studies最新文献_第5页

Quantifying propagation effects of climate and vegetation changes on evapotranspiration and streamflow signatures in Yarlung Tsangpo River Basin 量化气候和植被变化对雅鲁藏布江流域蒸散量和溪流特征的传播效应

IF 4.7 2区地球科学 Q1 WATER RESOURCES

Journal of Hydrology-Regional Studies

Pub Date : 2024-10-21 DOI: 10.1016/j.ejrh.2024.102015

Qi Huang , Yongqiang Zhang , Congcong Li , Ning Ma

Study region

Yarlung Tsangpo River basin (YTRB) went through significant increases in precipitation, temperature and leaf area index (LAI) during 1982–2018.

Study focus

This study aims to investigate the propagation effects of climate and vegetation change on actual evapotranspiration (AET) and streamflow signatures with simulation experiments using an improved hydrological model that couples a diagnostic evapotranspiration module.

New hydrological insights

The improved hydrological model performs well in simulating streamflow, actual evapotranspiration and most streamflow signatures in six subcatchments of upper Nuxia region of YTRB (e.g. median Nash-Sutcliffe Efficiency of daily streamflow larger than 0.72). Changes in AET and streamflow are dominated by the long-term increase in precipitation (P), followed by considerable influence from the increase in LAI and marginal influence from the increase in temperature. Increases in both P and LAI have increased AET but caused wetting and drying effects on streamflow, respectively. LAI-induced increase in transpiration and interception evaporation is partly offset by the decrease in soil evaporation, resulting in marginal changes in AET. Subsequently, changes in streamflow signatures are amplified when propagating from AET to streamflow signatures, especially for those reflecting frequency and duration. This study advanced the understanding of the propagation effect of climate and vegetation variables on AET and streamflow signatures.

研究区域雅鲁藏布江流域（YTRB）在 1982-2018 年间经历了降水、温度和叶面积指数（LAI）的显著增加。研究重点本研究旨在通过使用改进的水文模型（该模型结合了蒸散诊断模块）进行模拟实验，研究气候和植被变化对实际蒸散（AET）和溪流特征的传播效应。新的水文见解改进后的水文模型在模拟 YTRB 上努夏地区六个子流域的溪流、实际蒸散量和大多数溪流特征方面表现良好（例如，日溪流的纳什-苏特克利夫效率中值大于 0.72）。AET 和溪流的变化主要受降水量（P）长期增加的影响，其次是 LAI 增加的显著影响和温度增加的微弱影响。降水量和 LAI 的增加都增加了 AET，但分别对溪流造成了湿润和干燥影响。LAI 引起的蒸腾和截流蒸发量的增加部分被土壤蒸发量的减少所抵消，从而导致 AET 的微小变化。随后，当从 AET 传播到流场特征时，流场特征的变化会被放大，尤其是那些反映频率和持续时间的特征。这项研究加深了人们对气候和植被变量对 AET 和溪流特征的传播效应的理解。

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引用次数: 0

Spatiotemporal patterns of pH related to streamflow variability, drought conditions, and bedrock lithology in acid sensitive streams within a humid, subtropical catchment: Mulberry River, Arkansas, USA 亚热带湿润集水区酸敏感溪流中 pH 值与溪流变化、干旱条件和基岩岩性的时空模式：美国阿肯色州桑树河

IF 4.7 2区地球科学 Q1 WATER RESOURCES

Journal of Hydrology-Regional Studies

Pub Date : 2024-10-19 DOI: 10.1016/j.ejrh.2024.101992

Joshua M. Blackstock , Phillip R. Owens , Philip A. Moore , Max C.A. Torbenson , Amanda R. Ashworth , Kelsey R. Anderson , Jason Burgess-Conforti , Chris D. Delhom

Study region

Mulberry River, Arkansas, USA

Study focus

Low alkalinity streams within siliciclastic dominated catchments like the Mulberry River in the south-central United States experience episodic acidification. Since 2009, reaches of the Mulberry River have been classified as impaired due to low pH. We hypothesize that if pH time series patterns are similar among tributaries, external watershed factors like seasonal weather may be related to low stream pH. We investigated pH variability in the Mulberry River watershed including changepoint detection analysis. Patterns of pH and changepoints were compared with streamflow variability and drought conditions using Palmer Drought Severity Index (PDSI).

New hydrological insights for the region

Changes in pH were near synchronous and similar magnitude across the study area, despite observed increases in median tributary pH from east to west. From the comparison of pH time series and PDSI, low pH values tended to occur during more negative PDSI, i.e. drier periods. The specific mechanisms driving low pH variability remain elusive, but we infer low stream pH is influenced, in part, by seasonal weather variability leading to drier watershed conditions and lower pH. The spatial variability of median pH values from east to west, though, are more related to spatial variability in bedrock lithology. We hypothesize other acid-sensitive streams in the region likely share similar pH behavior and with low pH occurring during drier periods.

研究地区美国阿肯色州桑树河研究重点美国中南部桑树河等硅质岩为主的集水区内的低碱度河流会出现偶发性酸化。自 2009 年以来，桑树河的一些河段因 pH 值过低而被列为受损河段。我们假设，如果各支流的 pH 值时间序列模式相似，则流域外部因素（如季节性天气）可能与溪流 pH 值偏低有关。我们对桑树河流域的 pH 值变化进行了调查，包括变化点检测分析。尽管观察到中位支流 pH 值从东到西有所上升，但整个研究区域的 pH 值变化接近同步，且变化幅度相似。通过比较 pH 值时间序列和 PDSI，低 pH 值往往出现在 PDSI 为负值的时期，即较干旱的时期。驱动低 pH 值变化的具体机制仍然难以捉摸，但我们推断溪流低 pH 值部分是受季节性天气变化的影响，导致流域条件更干燥，pH 值更低。不过，pH 中值从东到西的空间变化与基岩岩性的空间变化关系更大。我们推测，该地区其他对酸度敏感的溪流可能也有类似的 pH 值变化，并且在较干旱时期会出现低 pH 值。

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引用次数: 0

Assessing the influences of future water development projects in Tekeze-Atbara-Setit basin on the Nile River inflow at Aswan, Egypt 评估 Tekeze-Atbara-Setit 流域未来水利开发项目对埃及阿斯旺尼罗河流入量的影响

IF 4.7 2区地球科学 Q1 WATER RESOURCES

Journal of Hydrology-Regional Studies

Pub Date : 2024-10-19 DOI: 10.1016/j.ejrh.2024.102007

Ahmed M. Hafez, Mohammed Haggag, Ahmad Wagdy, Hany G. Radwan

Study region

The Tekeze-Atbara-Setit (TAS) basin as a portion of the Eastern Nile Basin (ENB) in Africa.

Study focus

ENB consists of four sub-basins; one of them is the Tekeze-Atbara-Setit basin. TAS basin is subject to future water development projects, including irrigation projects and hydropower dams. Potential impacts of these projects need to be assessed regarding the inflow and hydroelectric generation at Egypt's High Aswan Dam (HAD).

New hydrological insights for the region

Two models are coupled offline; The Soil Water Assessment Tool (SWAT) model and HEC-Reservoir Simulation Model (HEC-ResSim). Base-case scenario is created without the expected future projects, in addition to five additional scenarios representing hydropower and irrigation projects. The maximum annual inflow at HAD declines by 1.6 km³ in the hydropower scenarios, while the produced power at HAD descends by 9.5 %. The maximum reduction in the annual inflow for hydropower and irrigation projects scenario at HAD is 4.63 km³ and 35.2 % for power reduction. Finally, the proposed future development project in TAS basin will have negative impacts on the flow, and generated hydropower at HAD in Egypt.

研究区域特克泽-阿特巴拉-塞蒂特流域（TAS）是非洲东尼罗河流域（ENB）的一部分。研究重点ENB 由四个子流域组成，特克泽-阿特巴拉-塞蒂特流域是其中之一。特克泽-阿特巴拉-塞蒂特流域未来将开展水利开发项目，包括灌溉项目和水电大坝。需要评估这些项目对埃及阿斯旺高坝 (HAD) 的流入量和水力发电量的潜在影响。对该地区的新水文见解离线耦合了两个模型：土壤水评估工具 (SWAT) 模型和 HEC 水库模拟模型 (HEC-ResSim)。除了代表水力发电和灌溉项目的另外五个方案外，还创建了没有预期未来项目的基础方案。在水力发电方案中，哈拉哈河断面（HAD）的最大年入库流量减少了 1.6 千立方米，而哈拉哈河断面（HAD）的发电量减少了 9.5%。在水电和灌溉工程方案中，哈德河的年最大入河水量减少了 4.63 千立方米，发电量减少了 35.2%。最后，拟议的 TAS 流域未来开发项目将对埃及 HAD 的流量和水力发电量产生负面影响。

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引用次数: 0

Impacts of external factors in salinity patterns via numerical modeling along the Scheldt Estuary, Belgium 通过数值建模研究外部因素对比利时斯海尔德河口盐度模式的影响

IF 4.7 2区地球科学 Q1 WATER RESOURCES

Journal of Hydrology-Regional Studies

Pub Date : 2024-10-19 DOI: 10.1016/j.ejrh.2024.102026

Boli Zhu, Danitza Salazar, Patrick Willems

Study region:

The Scheldt Estuary in Belgium

Study focus:

Understanding the mechanisms that control salt intrusion in estuaries is crucial due to its significant impact on the ecological environment and the water resource potential of estuaries. This study utilizes the Mike11 model to perform discharge (Q), water level (WL), and salinity (S) simulations in the reference and three future scenarios with sea level (SL) rise and Q reduction. A comparative analysis is conducted to evaluate the impact of individual and combined external factors (Q and WL) in the high-risk scenario S2.

New hydrological insights for the regions:

Results demonstrate that the midstream S is more sensitive to climate change compared to the upstream, leading to a transition of dominance from the freshwater zone to the mesohaline zone. The temporal evolution of S longitudinal structure exhibits significant variations throughout the year, showing increasing saltwater intrusion distance as the scenario intensify, particularly in seasonally low river flow period. It is also found that the combined effects of external factors on variable S demonstrate complex interactions, yielding varying sensitivities across different regions, rather than simply being the sum of individual factor impacts. Additionally, the correlations analysis indicates robust negative associations between upstream Q and S, and intricate and weak positive relationships between downstream WL and S.

研究区域：比利时斯海尔德河口研究重点：由于盐分入侵对河口的生态环境和水资源潜力有重大影响，因此了解控制河口盐分入侵的机制至关重要。本研究利用 Mike11 模型对参考情景和三种未来情景（海平面（SL）上升和 Q 值降低）中的排水量（Q）、水位（WL）和盐度（S）进行了模拟。结果表明，与上游相比，中游 S 对气候变化更加敏感，导致淡水区的主导地位向中盐区过渡。S 纵向结构的时间演化在全年中表现出显著的变化，随着情景的加剧，盐水入侵距离不断增加，尤其是在季节性河流流量较小的时期。研究还发现，外部因素对变量 S 的综合影响表现出复杂的相互作用，在不同地区产生不同的敏感性，而不仅仅是单个因素影响的总和。此外，相关性分析表明，上游 Q 与 S 之间存在强有力的负相关关系，而下游 WL 与 S 之间则存在错综复杂的微弱正相关关系。

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引用次数: 0

The influence of astronomical tide phases on urban flooding during rainstorms: Application to Macau 天文潮汐相位对暴雨期间城市内涝的影响：在澳门的应用

IF 4.7 2区地球科学 Q1 WATER RESOURCES

Journal of Hydrology-Regional Studies

Pub Date : 2024-10-19 DOI: 10.1016/j.ejrh.2024.101998

Lirong Dong , Jiahong Liu , Jinjun Zhou , Chao Mei , Hao Wang , Jia Wang , Hongyuan Shi , Sana Nazli

Study region

The study area is the western part of the Macau Peninsula in China, with an area of 4.06 km².

Study focus

This study developed a coupled hydrological-hydraulic model that simulates the two-dimensional (2D) surface flow and one-dimensional (1D) drain pipe flow of compound inundation. The model was applied to Macau, China, as a study area, and the typhoon Mangkhut in 2018 was used as a case study to validate the model’s performance. Simulating compound inundation scenarios of extreme rainfall and astronomical tide and exploring the influence of astronomical tide on coastal urban inundation.

New hydrological insights for the region

Urban flood disasters are profoundly influenced by tidal levels, albeit the height of tides alone does not solely exacerbate the phenomenon. Rather, the phase of astronomical tides during rainfall also plays a crucial role in determining the severity of urban flooding. This research has revealed that when rainfall synchronizes with the recession phase of the spring tide, urban flooding conditions become acute, 17.66 % increase in total surface water volume for the scenario with the highest tidal level impact compared to the scenario with the lowest tidal level impact. This paper presents the response of coastal cities to the flooding process under different combined rainstorm-astronomical tide scenarios, to provide scientific guidance for disaster preparedness planning in coastal areas, and to improve the resilience of disasters.

研究区域研究区域为中国澳门半岛西部，面积为 4.06 平方公里。研究重点本研究开发了一种水文-水力耦合模型，用于模拟复合淹没的二维（2D）地表流和一维（1D）排水管流。该模型以中国澳门为研究区域，并以 2018 年台风 "山竹 "为案例验证了模型的性能。模拟极端降雨和天文大潮的复合淹没情景，探讨天文大潮对沿海城市淹没的影响。为该地区提供新的水文见解城市洪涝灾害受潮位影响深远，尽管潮位高低并不是加剧洪涝灾害的唯一因素。相反，降雨期间的天文潮汐相位在决定城市洪水的严重程度方面也起着至关重要的作用。这项研究表明，当降雨与春潮的退潮阶段同步时，城市内涝情况会变得严重，潮位影响最大的情况与潮位影响最小的情况相比，地表水总量增加了 17.66%。本文介绍了不同暴雨-天文大潮组合情景下沿海城市对洪水过程的响应，为沿海地区防灾规划提供科学指导，提高抗灾能力。

{"title":"The influence of astronomical tide phases on urban flooding during rainstorms: Application to Macau","authors":"Lirong Dong , Jiahong Liu , Jinjun Zhou , Chao Mei , Hao Wang , Jia Wang , Hongyuan Shi , Sana Nazli","doi":"10.1016/j.ejrh.2024.101998","DOIUrl":"10.1016/j.ejrh.2024.101998","url":null,"abstract":"<div><h3>Study region</h3><div>The study area is the western part of the Macau Peninsula in China, with an area of 4.06 km<sup>2</sup>.</div></div><div><h3>Study focus</h3><div>This study developed a coupled hydrological-hydraulic model that simulates the two-dimensional (2D) surface flow and one-dimensional (1D) drain pipe flow of compound inundation. The model was applied to Macau, China, as a study area, and the typhoon Mangkhut in 2018 was used as a case study to validate the model’s performance. Simulating compound inundation scenarios of extreme rainfall and astronomical tide and exploring the influence of astronomical tide on coastal urban inundation.</div></div><div><h3>New hydrological insights for the region</h3><div>Urban flood disasters are profoundly influenced by tidal levels, albeit the height of tides alone does not solely exacerbate the phenomenon. Rather, the phase of astronomical tides during rainfall also plays a crucial role in determining the severity of urban flooding. This research has revealed that when rainfall synchronizes with the recession phase of the spring tide, urban flooding conditions become acute, 17.66 % increase in total surface water volume for the scenario with the highest tidal level impact compared to the scenario with the lowest tidal level impact. This paper presents the response of coastal cities to the flooding process under different combined rainstorm-astronomical tide scenarios, to provide scientific guidance for disaster preparedness planning in coastal areas, and to improve the resilience of disasters.</div></div>","PeriodicalId":48620,"journal":{"name":"Journal of Hydrology-Regional Studies","volume":"56 ","pages":"Article 101998"},"PeriodicalIF":4.7,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142534613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhancing water management in Northern European lowland chalk streams: A parsimonious, high-resolution hydrological model using groundwater level as a proxy for baseflow 加强北欧低地白垩溪流的水资源管理：使用地下水位作为基流替代物的简易高分辨率水文模型

IF 4.7 2区地球科学 Q1 WATER RESOURCES

Journal of Hydrology-Regional Studies

Pub Date : 2024-10-19 DOI: 10.1016/j.ejrh.2024.102022

Thomas Homan , Nicholas J.K. Howden , Ruth Barden , Barbara Kasprzyk-Hordern , Jan Hofman

Study region

The River Frome, a chalk stream in West Dorset, UK.

Study focus

High-resolution hydrological models are required to integrate with the current wave of high-frequency data and advance our understanding of pollutant sources, pathways, and sinks. This presents several challenges in chalk streams, as their high-permeability and unique hydrogeological characteristics often leads to complex models that are overparameterized and computationally burdensome. In this article, we develop a novel and parsimonious modelling approach to describe the surface hydrology for a chalk stream in high resolution (15-minute frequency, ≤ 100 m cross-section spacing), using groundwater levels as a proxy for spring discharges.

New hydrological insights for the region

Our results show that chalk stream dry-weather flows can be simulated accurately and parsimoniously at high-resolution (Nash-Sutcliffe efficiency = 0.97, mean relative error = 2.86 %, for a five-year period). We also show that spring discharges are the dominant form of flow accretion in all seasons and are critical to dilute sewage treatment inputs during the ecological growing season, whilst runoff and quick-flow pathways in the river valley corridor contribute a small proportion to annual flow accretion (< 5.2 %). Due to its simplicity and few parameters to calibrate, this modelling approach has broad applicability in lowland permeable catchments. Management implications include expeditious investigations of high-resolution freshwater quality responses to pollution and informing abstraction limits to sustain robust ecological conditions.

研究区域英国西多塞特郡的白垩溪流弗罗姆河。研究重点需要高分辨率水文模型来整合当前的高频数据浪潮，并推进我们对污染物来源、途径和汇的了解。白垩溪流的高渗透性和独特的水文地质特征往往导致模型过于复杂，参数过高，计算负担过重，这给白垩溪流的研究带来了诸多挑战。在本文中，我们开发了一种新颖、简洁的建模方法，利用地下水位作为春季排水量的代表，以高分辨率（15 分钟频率，断面间距≤ 100 米）描述白垩溪的地表水文。我们的研究还表明，春季排放是所有季节流量增加的主要形式，对稀释生态生长季节的污水处理输入量至关重要，而河谷走廊的径流和快速流动途径对年流量增加的贡献很小（5.2%）。由于这种建模方法简单且需要校准的参数较少，因此在低地透水集水区具有广泛的适用性。对管理的影响包括：快速调查高分辨率淡水水质对污染的反应，并告知取水限制，以维持稳健的生态条件。

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引用次数: 0

Accuracy evaluation and comparison of GSMaP series for retrieving precipitation on the eastern edge of the Qinghai-Tibet Plateau 用于青藏高原东部边缘降水量检索的全球降水测绘卫星系列的精度评估和比较

IF 4.7 2区地球科学 Q1 WATER RESOURCES

Journal of Hydrology-Regional Studies

Pub Date : 2024-10-19 DOI: 10.1016/j.ejrh.2024.102017

Chun Zhou , Li Zhou , Juan Du , JiaJia Yue , Tianqi Ao

Study Region

Min River Basin on the eastern Qinghai-Tibet Plateau.

Study Focus

Precipitation is critical for hydrological processes, making accurate data essential for water management and flood forecasting. Satellite precipitation products offer valuable high-resolution spatiotemporal information, with the GSMaP series being widely used. However, comprehensive evaluations of different versions are limited. This study assesses the accuracy of Gauge and MVK products (versions 06, 07, and 08) across spatial and temporal scales and evaluates their performance in detecting precipitation events of varying intensities.

New Hydrological Insights for the Study Region

(1) GSMaP versions 06 and 07 exhibit higher detection rates for precipitation events, with POD values exceeding 0.8, while version 08 has a lower false alarm rate, with FAR values below 0.15. (2) GSMaP products are more successful in capturing precipitation events during the rainy season than the dry season. (3) With increasing elevation, the Gauge product consistently maintains a high hit rate and reduced false alarm rate, whereas the MVK product's hit rates improve. (4) For different rainfall intensities, GSMaP products more accurately detect moderate and heavy rain events, with the Gauge product outperforming the MVK product in terms of accuracy. These insights enhance the understanding of GSMaP product performance on eastern edge of the Qinghai-Tibet Plateau, aiding in improved water management practices.

研究区域青藏高原东部的岷江流域。研究重点降水对水文过程至关重要，因此准确的数据对水资源管理和洪水预报至关重要。卫星降水产品提供了宝贵的高分辨率时空信息，其中全球降水测绘卫星系列得到了广泛应用。然而，对不同版本的全面评估却很有限。本研究评估了 Gauge 和 MVK 产品（版本 06、07 和 08）在不同时空尺度上的准确性，并评价了它们在探测不同强度降水事件方面的性能。对研究区域的新水文见解（1）GSMaP 版本 06 和 07 对降水事件的探测率较高，POD 值超过 0.8，而版本 08 的误报率较低，FAR 值低于 0.15。(2) 全球降水测绘卫星产品在雨季比旱季更容易捕捉降水事件。(3) 随着海拔高度的增加，Gauge 产品始终保持较高的命中率和较低的误报率，而 MVK 产品的命中率则有所提高。(4) 对于不同的降雨强度，全球降水测绘卫星产品能更准确地探测到中雨和大雨事件，其中 Gauge 产品的准确性优于 MVK 产品。这些见解加深了人们对青藏高原东部边缘地区全球降水测绘卫星产品性能的理解，有助于改进水资源管理实践。

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引用次数: 0

Using reanalysis precipitation data for developing intensity-duration-frequency curves in a poorly gauged city 利用再分析降水量数据绘制一个测量条件较差城市的降水强度-持续时间-频率曲线

IF 4.7 2区地球科学 Q1 WATER RESOURCES

Journal of Hydrology-Regional Studies

Pub Date : 2024-10-19 DOI: 10.1016/j.ejrh.2024.102005

Frank Joseph Wambura

Study region

The Msimbazi River catchment traversing Dar es Salaam city in east-central Tanzania.

Study focus

The lack of high-resolution rainfall data in cities in developing countries hinders the development of suitable intensity–duration–frequency (IDF) curves for designing and evaluating hydraulic structures. Thus, this study investigated the potential of relatively high-resolution reanalysis precipitation data for developing IDF curves in the poorly gauged Msimbazi River catchment in Dar es Salaam city. The time series of hourly ERA5-Land reanalysis precipitation data were used to generate the annual maximum series at four selected points in the river catchment. These were subsequently bias-corrected using parameters derived from limited observed rainfall data. The bias-corrected annual maximum series of reanalysis precipitation (AMSRP) data were fitted with the best probability distribution functions, which were then used to estimate quantiles of IDF curves for various annual exceedance probabilities.

New hydrological insights

The findings revealed that uncorrected AMSRP data would have underestimated rainfall intensities in this region by a factor of two to six. Different areas in the Msimbazi River catchment have different rainfall distributions and IDF curves. Thus, no single set of IDF curves can represent rainfall intensities in the entire river catchment. Due to the potential of relatively high-resolution reanalysis precipitation data, designs and evaluations of hydraulic structures in poorly gauged cities are encouraged to use bias-corrected and location-specific IDF curves.

研究区域横穿坦桑尼亚中东部达累斯萨拉姆市的 Msimbazi 河集水区。研究重点发展中国家的城市缺乏高分辨率的降雨量数据，这阻碍了设计和评估水力结构所需的合适的强度-持续时间-频率（IDF）曲线的开发。因此，本研究调查了相对高分辨率的再分析降水数据在达累斯萨拉姆市测量条件较差的姆辛巴齐河流域开发 IDF 曲线的潜力。每小时ERA5-Land再分析降水量数据的时间序列被用于生成该流域四个选定点的年最大降水量序列。随后，利用从有限的观测降雨数据中得出的参数对这些数据进行了偏差校正。经过偏差校正的再分析年最大降水量序列（AMSRP）数据采用最佳概率分布函数拟合，然后用于估算各种年超标概率的 IDF 曲线定量。姆辛巴齐河流域的不同地区有不同的降雨分布和 IDF 曲线。因此，没有一组 IDF 曲线可以代表整个流域的降雨强度。由于相对高分辨率的再分析降水数据的潜力，我们鼓励在测量条件较差的城市进行水力结构设计和评估时，使用经过偏差校正的、针对具体地点的 IDF 曲线。

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引用次数: 0

A parsimonious model for springs discharge reconstruction and forecast for drought management: Lessons from a case study in Central Italy 为干旱管理重建和预测泉水排放的简易模型：意大利中部案例研究的启示

IF 4.7 2区地球科学 Q1 WATER RESOURCES

Journal of Hydrology-Regional Studies

Pub Date : 2024-10-18 DOI: 10.1016/j.ejrh.2024.102021

N. Guyennon , S. Passaretti , C. Mineo , E. Boscariol , A.B. Petrangeli , A. Varriale , E. Romano

Study region

Karst springs located in Central Apennine ridge (Central Italy), in the Tiber River basin.

Study focus

The assessment of water availability is a key issue in a water supply system because of increasing drought and water scarcity events. Analysing and predicting the dynamic behaviour of groundwater resources is challenging to conceptualize and model, especially in poorly-monitored systems. A parsimonious model based on linear regression between the monthly spring discharge time series and Standardized Precipitation Index is proposed. The model is conceived for management purposes and suitable for users with a limited background in modelling techniques, who can take advantage from an initial knowledge of the aquifers hydrological regime.

New hydrological insights for the region

The model developed for long-term monitored springs is used to reconstruct the historical groundwater hydrographs and to make predictions for poorly-monitored springs with similar properties, exploiting the “similarity principle”. Results highlight the notable performance of this approach, which represents a useful tool for overcoming the limitations in spring discharge monitoring networks. Moreover, the tool is used to test forecast performance enabling water managers to develop a monthly early-warning system fostering a sustainable water resource exploitation and limiting the critical issues of the water supply system, especially during drought periods. Results are discussed from the perspective of the water utilities entrusted to manage their resources in the study region.

研究地区卡斯特泉位于意大利中部亚平宁山脊，台伯河流域。研究重点由于干旱和缺水事件日益增多，因此对供水系统中的水供应情况进行评估是一个关键问题。分析和预测地下水资源的动态行为对概念化和模型化而言具有挑战性，尤其是在监测不足的系统中。本文提出了一个基于月度春季排泄量时间序列与标准化降水指数之间线性回归的简易模型。针对长期监测泉水开发的模型被用于重建历史地下水水文图，并利用 "相似性原则 "对具有相似属性的监测不足的泉水进行预测。结果凸显了这种方法的显著性能，是克服泉水排放监测网络局限性的有用工具。此外，该工具还用于测试预测性能，使水资源管理者能够开发月度预警系统，促进水资源的可持续开发，限制供水系统的关键问题，尤其是在干旱时期。从受托管理研究地区水资源的水务公司的角度对结果进行了讨论。

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引用次数: 0

Changes of blue and green water in arid inland dissipation area based on coupled surface water and groundwater model 基于地表水和地下水耦合模型的干旱内陆消落区蓝水和绿水的变化

IF 4.7 2区地球科学 Q1 WATER RESOURCES

Journal of Hydrology-Regional Studies

Pub Date : 2024-10-18 DOI: 10.1016/j.ejrh.2024.102010

Lu Wang , Feilong Jie , Bing He

Study region

The Mainstream in the Tarim River Basin, Southern Xinjiang, China

Study focus

Climate change and human activities have significantly altered the water cycle, and water security evaluation and management are urgent. In arid and semi-arid areas, the assessment of blue and green water is particularly important. In this study, the MIKE SHE model is used to simulate the spatial and temporal changes of blue and green water resources in the mainstream of the Tarim River Basin (TRB) from 1990 to 2050 under land use and climate change conditions. The scarcity and vulnerability of blue-green water are introduced to evaluate the water security of the basin. The impacts of different land uses on blue-green water resources were also calculated according to the model zoning.

New hydrological insights for the region

The results indicate that from 1990 to 2050, blue water resources show a spatial pattern of gradual decrease from upstream to downstream. Compared to blue water, green water is dispersed more evenly over space. Future climatic scenarios will impact water security, as will changes in blue and green water security in terms of time and space. By comparing the influence of ecological water transport on the change of blue and green water before and after 2000, it was found that environmental water transport plays a certain role in improving the blue water scarcity in downstream of the TRB. The study is significant in maintaining regional water security and ecosystem stability.

研究地区中国新疆南部塔里木河流域的主流研究重点气候变化和人类活动极大地改变了水循环，水安全评估和管理迫在眉睫。在干旱和半干旱地区，蓝水和绿水的评估尤为重要。本研究利用 MIKE SHE 模型模拟了在土地利用和气候变化条件下，塔里木河流域（TRB）主流地区从 1990 年到 2050 年蓝色和绿色水资源的时空变化。引入蓝绿水的稀缺性和脆弱性来评估流域的水安全。结果表明，从 1990 年到 2050 年，蓝水资源呈现出从上游到下游逐渐减少的空间格局。与蓝水相比，绿水的空间分布更为均匀。未来的气候情景将对水安全产生影响，而蓝水和绿水安全在时间和空间上的变化也将对水安全产生影响。通过比较 2000 年前后生态输水对蓝水和绿水变化的影响，发现环境输水对改善 TRB 下游蓝水稀缺状况有一定作用。该研究对维护区域水安全和生态系统稳定具有重要意义。

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