Journal of Hydrology-Regional Studies最新文献

{"title":"An agent-based socio-hydrological modeling to identify the feedbacks between agricultural irrigation and ecological water conveyance tradeoffs in Hotan River basin","authors":"Shunke Wang ,&nbsp;Jie Xue ,&nbsp;Jingjing Chang ,&nbsp;Huaiwei Sun ,&nbsp;Xinxin Li ,&nbsp;Xin Liu","doi":"10.1016/j.ejrh.2024.102028","DOIUrl":"10.1016/j.ejrh.2024.102028","url":null,"abstract":"<div><h3>Study region</h3><div>Hotan River basin in Northwest China</div></div><div><h3>Study focus</h3><div>The conflict between agricultural irrigation and ecological water conveyance is particularly critical in arid inland river basins. Water resource systems involve multiple stakeholders and sectors, complicating the identification of dynamic feedback between agriculture and ecology. This study presents an agent-based socio-hydrological modeling (ABSHM) framework to address these interactions.</div></div><div><h3>New hydrological insights for the region</h3><div>Feedback is quantified using dynamic state variable of oasis decision-making sensitivity in the Hotan River basin. When this sensitivity ranges from 0.03 to 0.06, water managers prioritize agricultural irrigation, increasing its usage from 8 to 47 million m³ at the expense of ecological water. Conversely, when sensitivity is from 0.015 to 0.03, ecological health requires increasing ecological water use from 27 to 66 million m³ by reducing irrigation. The ABSHM framework effectively captures these dynamic feedback processes, supporting basin water resources management and decision-making. The uniqueness of the ABSHM framework lies in its ability to capture the impact of individual decision-making behaviors on the overall water resource system. This offers new perspectives and approaches for addressing current and future water resource management challenges.</div></div>","PeriodicalId":48620,"journal":{"name":"Journal of Hydrology-Regional Studies","volume":"56 ","pages":"Article 102028"},"PeriodicalIF":4.7,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142659819","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}

{"title":"Regional-scale seasonal forecast of surface water availability in a semi-arid environment: The case of Ceará State in Northeast of Brazil","authors":"Erwin Rottler ,&nbsp;Martin Schüttig ,&nbsp;Axel Bronstert ,&nbsp;Alyson Brayner Sousa Estácio ,&nbsp;Renan Vieira Rocha ,&nbsp;Valdenor Nilo de Carvalho Junior ,&nbsp;Clecia Cristina Barbosa Guimarães ,&nbsp;Eduardo Sávio P.R. Martins ,&nbsp;Christof Lorenz ,&nbsp;Klaus Vormoor","doi":"10.1016/j.ejrh.2024.102058","DOIUrl":"10.1016/j.ejrh.2024.102058","url":null,"abstract":"<div><h3>Study region:</h3><div>Ceará (Brazil).</div></div><div><h3>Study focus:</h3><div>Considerable intra- and inter-annual variability of rainfall in this semi-arid region lead to strong temporal variations in water availability. To store and supply water in times of water scarcity, tens of thousands of freshwater reservoirs have been built over time, most of which are unmonitored. Here, we develop a hydrological forecasting system for the entire state of Ceará which integrates satellite-based monitoring of reservoir water storage, bias-corrected seasonal weather forecasts and hydrological modeling of freshwater availability. We test and demonstrate the applicability of this system by conducting experiments with historic data, hindcasts and forecasts.</div></div><div><h3>New hydrological insights for the region:</h3><div>The assimilation of in-situ and Sentinel-1 based observations of reservoir fillings into the hydrological model WASA-SED proved to be feasible and an important step in the modeling of available water resources dynamics. Hydrological simulations for January to June from 1990–2019 based on meteorological observations resulted in a median average NRMSE between observed and modeled reservoir fillings of strategic reservoirs of 29.51%. The comparison of observed and predicted precipitation from two different seasonal forecasting systems were in the same order of magnitude (i.e. 19.51% and 24.52%). Hindcast experiments suggested the superposition of uncertainties of different model components. Efforts are currently being made to further test and improve the developed integrated framework as part of the operational service.</div></div>","PeriodicalId":48620,"journal":{"name":"Journal of Hydrology-Regional Studies","volume":"56 ","pages":"Article 102058"},"PeriodicalIF":4.7,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142659820","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}

{"title":"A novel structural equation modelling-based framework for identifying hydrometeorological multi-factor interaction","authors":"Zhongan Li ,&nbsp;Xian Guan ,&nbsp;Xizhi Nong ,&nbsp;Ronghui Li ,&nbsp;Lihua Chen ,&nbsp;Jiahua Wei","doi":"10.1016/j.ejrh.2024.102050","DOIUrl":"10.1016/j.ejrh.2024.102050","url":null,"abstract":"<div><h3>Study region</h3><div>The Hanjiang River Basin, China.</div></div><div><h3>Study focus</h3><div>In this study, we proposed a new integrated framework based on structural equation models to identify hydrometeorological multi-factor interaction relationship. The spatiotemporal distribution and interaction relationship of hydrological, meteorological, and vegetation indicators in the Hanjiang River Basin were analyzed based on the national long-series monitoring data.</div></div><div><h3>New hydrological insights for the region</h3><div>The findings reveal that: (1) The rainfall is the maximum in the lower reaches (968.87 mm), and the runoff depth fluctuated the most in the lower reaches (1181.70 mm to 2934.88 mm). (2) Dew point temperature is an important influencing factor of rainfall in the upper and middle reaches, and relative humidity is an important influencing factor of rainfall in the lower reaches. High vegetation cover is an important influencing factor for runoff depth. (3) Rainfall and runoff depth are significantly negatively affected by meteorological characteristics, with effect values ranging from −0.24 to −0.68. However, runoff depth is positively affected by rainfall, relative humidity, vegetation characteristics, and canopy interception, with effect values ranging from 0.02 to 0.58. The size and mode of influence have significant regional differences.</div></div>","PeriodicalId":48620,"journal":{"name":"Journal of Hydrology-Regional Studies","volume":"56 ","pages":"Article 102050"},"PeriodicalIF":4.7,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142659859","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}

{"title":"Risk assessment and sources associated with potentially toxic elements in suspended particulate matter: A karst river perspective in active mining area","authors":"Yeye Ren ,&nbsp;Y.Jun Xu ,&nbsp;Pan Wu ,&nbsp;Jie Zeng ,&nbsp;Changmei Yao ,&nbsp;Guangxi Long ,&nbsp;Xingxing Cao","doi":"10.1016/j.ejrh.2024.102052","DOIUrl":"10.1016/j.ejrh.2024.102052","url":null,"abstract":"<div><h3>Study region</h3><div>Daiyang River Basin, a typical karst river basin impacted by mining activities in Guizhou, Southwest China.</div></div><div><h3>Study focus</h3><div>Rivers are fundamental components of regional water security, but they are facing potentially toxic elements (PTEs) pollution caused by mining activities. This study investigated the concentration, behavior, risks and sources of nine PTEs in suspended particulate matter (SPM) from mining-impacted karst rivers, which are essential for the safety and management of karst water environments.</div></div><div><h3>New hydrological insights for the region</h3><div>The contents of Cr, Ni, Cu, Zn, As, Cd, Sb and Hg exceeded the corresponding local soil background values, with Zn and Cu being the most important pollutants. These elements caused a very high potential toxicity risk to the basin and unacceptable carcinogenic and non-carcinogenic risks to the local residents. Correlation analysis and the positive matrix factorization (PMF) model indicated that Ni, Cd, Zn and Cu were mainly derived from mixed sources of geological background and anthropogenic activities (30.95 %), Hg, Sb, and As were related to coal mining and combustion sources (28.91 %), while Pb, As, Cr and Sb were mainly contributed by natural sources (40.15 %). Furthermore, mixed sources, mining-related sources and As were identified as priority control factors in the study area. These insights can provide powerful support for decision-makers to develop control policies and reduce PTEs pollution in karst areas.</div></div>","PeriodicalId":48620,"journal":{"name":"Journal of Hydrology-Regional Studies","volume":"56 ","pages":"Article 102052"},"PeriodicalIF":4.7,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142659860","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}

{"title":"Geochemical fingerprints, evolution, and driving forces of groundwater in an alpine basin on Tibetan Plateau: Insights from unsupervised machine learning and objective weight allocation approaches","authors":"Hongjie Yang ,&nbsp;Yong Xiao ,&nbsp;Shaokang Yang ,&nbsp;Zhen Zhao ,&nbsp;Shengbin Wang ,&nbsp;Shanhu Xiao ,&nbsp;Jie Wang ,&nbsp;Yuqing Zhang ,&nbsp;Jianhui Wang ,&nbsp;Youjin Yuan ,&nbsp;Ning Wang ,&nbsp;Liwei Wang ,&nbsp;Wenxu Hu","doi":"10.1016/j.ejrh.2024.102054","DOIUrl":"10.1016/j.ejrh.2024.102054","url":null,"abstract":"<div><h3>Study Region</h3><div>Tongde Basin, a typical alpine basin on the northeastern Tibetan Plateau</div></div><div><h3>Study focus</h3><div>Research on the hydrochemical pattern and availability of groundwater is very limited in alpine regions, which greatly hinders the rational ulitilization and scientific management of groundwater resources. Multiple approaches integrating self-organizing map, K-means, entropy weight were employed to elucidate the distinct hydrochemical evolution patterns and controlling mechanisms of groundwater in alpine basins with dense human activities.</div></div><div><h3>New hydrological insights for the region</h3><div>Multiple hydrochemical evolution patterns were discovered for groundwater in present alpine basin on northeastern Tibetan Plateau. Groundwater presents a gradual hydrochemical evolution from the piedmont to the riverside under the natural regulation with the increasing of TDS and major ions along the flow path. While, groundwater at some sporadic sites is featured with relatively high total alkalinity due to carbonate mineral dissolution. The riverine groundwaters are regulated by the strong hydrodynamic condition of river and demonstrate fresher hydrochemical characteristics. Groundwaters in the irrigation areas are featured by elevated nitrate levels with a maximum of 42.86 mg/L, attributed to agricultural pollution inputs. A conceptual model was established to illustrate the distinct hydrochemical fingerprints, evolution patterns and controlling mechanisms of groundwater in alpine basins that with dense human activities. This research can enhance the understanding of groundwater chemical status, genesis and availability, and is beneficial for the conservation and sustainable management of groundwater resources in ecologically fragile alpine regions worldwide.</div></div>","PeriodicalId":48620,"journal":{"name":"Journal of Hydrology-Regional Studies","volume":"56 ","pages":"Article 102054"},"PeriodicalIF":4.7,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142586306","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}

{"title":"Identifying the pattern of shallow groundwater hydrochemistry and its driving factors in a typical estuarine delta of Poyang Lake watershed, China: Insights into water quality assessment","authors":"Hongxiang Fan ,&nbsp;Fan Song ,&nbsp;Huawu Wu ,&nbsp;Yao Du ,&nbsp;Ruiyu Lei ,&nbsp;Mengyao Ding ,&nbsp;Kaiwen Li ,&nbsp;Jing Li ,&nbsp;Congsheng Fu","doi":"10.1016/j.ejrh.2024.102049","DOIUrl":"10.1016/j.ejrh.2024.102049","url":null,"abstract":"<div><h3>Study region</h3><div>A typical estuarine delta of Gan−Xiu River within Poyang Lake watershed, situated in the north of Jiangxi Province, China</div></div><div><h3>Study focus</h3><div>Although groundwater is considered as a crucial water resource for social development and public health, it presents significant challenges in preventing the deterioration of groundwater quality in the seasonal floodplain regions. Hence, this study focuses on the spatiotemporal variations of ionic concentrations of shallow groundwater in an estuarine delta of Gan-Xiu River in Poyang Lake watershed, which is greatly complicated by complex hydrological regimes and intensive anthropogenic activities such as cropland fertilizer. The potential factors controlling the ionic concentrations were identified using self-organizing map clustering and Piper diagram approaches. Moreover, the overall water quality of shallow groundwater was assessed according to the ionic compositions.</div></div><div><h3>New hydrological insights for the region</h3><div>(1) Shallow groundwater chemistry was influenced by weathering silicate and carbonate from ionic and Gibbs plots, which is highly associated with the distribution of the carbonate rock fissure-karst aquifer in the study region. (2) The contribution of groundwater to river water varied from 53.2 % to 71.5 % via isotopic analysis, suggesting that groundwater dominate the component of river water. (3) Most samples from cluster types are suitable for drinking and irrigation use except for sites from Cluster 6, which were characterized by the higher concentrations of Cl⁻, NO₃⁻ and SO₄²⁻.</div></div>","PeriodicalId":48620,"journal":{"name":"Journal of Hydrology-Regional Studies","volume":"56 ","pages":"Article 102049"},"PeriodicalIF":4.7,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142586305","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}

{"title":"Estimating groundwater recharge across Africa during 2003–2023 using GRACE-derived groundwater storage changes","authors":"Vagner G. Ferreira ,&nbsp;Hao Yang ,&nbsp;Christopher Ndehedehe ,&nbsp;Hongyan Wang ,&nbsp;Ying Ge ,&nbsp;Jia Xu ,&nbsp;Min Xia ,&nbsp;Ikechukwu Kalu ,&nbsp;Miao Jing ,&nbsp;Nathan Agutu","doi":"10.1016/j.ejrh.2024.102046","DOIUrl":"10.1016/j.ejrh.2024.102046","url":null,"abstract":"<div><h3>Study Region:</h3><div>Africa, with its diverse climatic zones from the humid Congo Basin to the arid Sahara Desert, where groundwater is influenced by climate variability, land use, and human activities.</div></div><div><h3>Study Focus:</h3><div>The main objective is to estimate groundwater recharge across Africa from 2003 to 2023 using a novel approach that uses GRACE-derived groundwater storage changes.</div></div><div><h3>New Hydrological Insights for the Region:</h3><div>This study provides new insights into the spatial patterns and temporal variability of groundwater recharge across Africa, highlighting the influence of climate variability on the continent’s groundwater resources. Key findings include distinct regional differences in recharge, with higher values in humid regions like the Congo Basin and lower values in arid regions like the Sahara Desert. Substantial interannual variability in recharge is largely driven by year-to-year variations in precipitation and modulated by major modes of climate variability, especially the Pacific Decadal Oscillation. The sensitivity of groundwater recharge to hydroclimatic extremes, with droughts causing significant declines and wet periods leading to above-average replenishment. Regions with low recharge rates or high variability, such as Northern Africa, are particularly vulnerable to climate change impacts and unsustainable groundwater abstraction. The findings emphasize the need for sustainable groundwater management strategies that consider the spatial and temporal variability of recharge, as well as the potential impacts of climate change on groundwater resources.</div></div>","PeriodicalId":48620,"journal":{"name":"Journal of Hydrology-Regional Studies","volume":"56 ","pages":"Article 102046"},"PeriodicalIF":4.7,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142578084","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}

{"title":"Attribution analysis of hydrological drought after the impoundment of the Danjiangkou reservoir in the Hanjiang River Basin","authors":"Cheng Li ,&nbsp;Yanping Qu ,&nbsp;Tianliang Jiang ,&nbsp;Furen Jiang ,&nbsp;Qianfeng Wang ,&nbsp;Xuejun Zhang ,&nbsp;Xiaohua Xu","doi":"10.1016/j.ejrh.2024.102038","DOIUrl":"10.1016/j.ejrh.2024.102038","url":null,"abstract":"<div><h3>Study region</h3><div>Hanjiang River Basin, China</div></div><div><h3>Study focus</h3><div>Under the joint influences of human activities and climate change, droughts frequently occur in the Hanjiang River Basin (HRB). Quantifying the driving forces contribution on hydrological drought is crucial to enhance the early warning ability. This study employed the standardized streamflow index (SSI) to assess hydrological drought. The Soil and Water Assessment Tool (SWAT) model was utilized to reconstruct natural streamflow based on hydrological and meteorological data. By comparing the variations of drought characteristics in simulated and observed scenarios, the impacts of human activities and climate change to hydrological drought were quantified.</div></div><div><h3>New hydrological insights for the study region</h3><div>The SWAT model is capable of effectively simulating the natural streamflow conditions of the HRB with NSE&gt;0.7, R²&gt;0.8, logNSE&gt;0.7 and |PBIAS|&lt;20 %. Hydrological drought has intensified as a prolonged duration and greater severity affected by human activities and climate change. During the whole impact period (1968–2022), the duration and severity increased by 66.22 % and 81.16 % compared to baseline period (1956–1967). The year 1991 is detected as the mutation point. From 1968–1990 climate change has been the main factor in exacerbating hydrological drought. Since 1991, the influence of human activities has gradually exceeded the influence of climate change. These findings provide valuable insights for watershed integrated water resources management and water security.</div></div>","PeriodicalId":48620,"journal":{"name":"Journal of Hydrology-Regional Studies","volume":"56 ","pages":"Article 102038"},"PeriodicalIF":4.7,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142578085","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}

{"title":"Evaluation of national and international gridded meteorological products for rainfall-runoff modelling in Northern Italy","authors":"Gökhan Sarigil,&nbsp;Mattia Neri,&nbsp;Elena Toth","doi":"10.1016/j.ejrh.2024.102031","DOIUrl":"10.1016/j.ejrh.2024.102031","url":null,"abstract":"<div><h3>Study region</h3><div>Northern Italy.</div></div><div><h3>Study focus</h3><div>Gridded meteorological products provide spatially-distributed meteorological forcings, facilitating hydrological modeling in large-scale experiments. However, their accuracy, in particular as far as precipitation is concerned, varies considerably in space and time, and rigorous validation of these products is essential before their application. This study conducts a large-scale evaluation of five meteorological datasets in Northern Italy through i) a direct comparison of precipitation and temperature estimates and ii) an indirect validation, assessing their ability to reproduce streamflow when used to force the CemaNeige-GR6J hydrological model. The tested datasets include two gauged-based products, namely SCIA (the reference gridded dataset from the Italian Institute for Environmental Protection and Research) and E-OBS, two products based on reanalyses (the global ERA5-Land and the national MERIDA) and a gauged-corrected global satellite precipitation product (CHIRPS).</div></div><div><h3>New hydrological insights for the region</h3><div>Gauge-based datasets provide the best streamflow simulations when the underlying station density is high: SCIA, based on a uniform and dense gauge network across the entire study area, confirms to be the best choice as the climatic reference dataset, while the use of E-OBS is not recommended in Piedmont due to the low number of stations. In areas with low station density, reanalyses may yield to more accurate results: among reanalysis-based products, the Italian MERIDA dataset outperforms ERA5-Land. Finally, CHIRPS results to be the least accurate precipitation dataset.</div></div>","PeriodicalId":48620,"journal":{"name":"Journal of Hydrology-Regional Studies","volume":"56 ","pages":"Article 102031"},"PeriodicalIF":4.7,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142578083","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}

{"title":"Attribution mechanism of drought propagation time with changes in climate and underlying surface","authors":"Kai Zhou ,&nbsp;Yimin Wang ,&nbsp;Jianxia Chang","doi":"10.1016/j.ejrh.2024.102041","DOIUrl":"10.1016/j.ejrh.2024.102041","url":null,"abstract":"<div><h3>Study region</h3><div>Thirteen catchment regions of the Yellow River basin, located in northern China.</div></div><div><h3>Study focus</h3><div>Drought is a natural phenomenon characterized by a water deficiency that impacts various aspects of the hydrological cycle. Water deficit signals propagate through the hydrological system and are manifested in the sequential occurrence of meteorological drought, agricultural drought, and hydrological drought. The climate and underlying surface continuously influence the propagation of drought. Hence, it is imperative to investigate the attribution mechanism of drought propagation under the influence of climate and underlying surface.</div></div><div><h3>New hydrological insights for the region</h3><div>This study provides a theoretical attribution analysis framework for drought propagation time, including statistical and physical mechanisms. From the point of view of statistical analysis, this study found that the difference between meteorological drought and hydrological drought trend statistics was significantly correlated with the propagation time. And from the analyses of the water-energy coupled equation show that the contribution of climate and underlying surface to runoff was significantly correlated with the propagation time. From the point of view of physical mechanisms, hydrometeorological and underlying surface factors are important variables affecting drought propagation time, and the results of regression analyses provide empirical formulas for drought propagation time. Unlike previous studies, this study delved into the attribution mechanism of drought propagation time through regional comparisons. These findings are expected to be helpful for local drought management efforts and mitigation of associated losses.</div></div>","PeriodicalId":48620,"journal":{"name":"Journal of Hydrology-Regional Studies","volume":"56 ","pages":"Article 102041"},"PeriodicalIF":4.7,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142572646","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}