Assessing climate change impacts on extreme hydrological characteristics of reservoir inflow in Tianshan Mountain Range, China

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: April 28, 2025

The hydrological extremes, caused by increasing regional extreme precipitation and melting glaciers or snow under climate change, pose a major challenge to reservoir management in Tianshan Mountain Range of China. Modeling assessment extremes are important measures ensure the safety operations water resources. However, insufficient faced reservoirs has limited development flood risk early warning methods for mountain reservoirs. To this end, based on VIC-CAS-R model that coupled with glacier snowmelt modules, study analyzed evaluated changing characteristics streamflow selected from 1961 2014, Standardized Streamflow Index (SSI) Mann-Kendall test were used identify as well trends. result indicated (1) showed segmented change trend "increasing-decreasing-increasing"; (2) notable variations temporal spatial distribution, located western area decrease wet (up 70.8%) an increase dry 73.9%), while eastern region experienced simultaneous 119.8%). These insights help deepen comprehension induced reservoirs, provide support predicting other arid inland regions.

Language: Английский

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How Do Satellite Precipitation Products Affect Water Quality Simulations? A Comparative Analysis of Rainfall Datasets for River Flow and Riverine Nitrate Load in an Agricultural Watershed

Nitrogen, Journal Year: 2024, Volume and Issue: 5(4), P. 1015 - 1030

Published: Nov. 1, 2024

Excessive nitrate loading from agricultural runoff leads to substantial environmental and economic harm, although hydrological models are used mitigate these effects, the influence of various satellite precipitation products (SPPs) on load simulations is often overlooked. This study addresses this research gap by evaluating impacts using different products—ERA5, IMERG, gridMET—on flow with Soil Water Assessment Tool Plus (SWAT+), Tar-Pamlico watershed as a case study. Although activities higher in summer, found lowest during season due reduced runoff. In contrast, was winter because increased runoff, highlighting dominance water driving riverine load. that IMERG predicts highest annual average (120 m3/s Pamlico Sound), it unexpectedly results (1750 metric tons/year). gridMET estimates significantly loads (3850 discrepancy underscores crucial impact rainfall datasets transport predictions highlights how choice dataset can simulations.

Language: Английский

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Framework for Stakeholder-Driven Socio-Hydrological Modeling: Conceptual Foundations for Policy Development and Evaluation to Improve Ecosystem Health

Lecture notes in civil engineering, Journal Year: 2024, Volume and Issue: unknown, P. 575 - 589

Published: Dec. 1, 2024

Language: Английский

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Remote Sensing Evaluation and Monitoring of Spatial and Temporal Changes in Ecological Environmental Quality in Coal Mining-Intensive Cities

Applied Sciences, Journal Year: 2024, Volume and Issue: 14(19), P. 8814 - 8814

Published: Sept. 30, 2024

In coal-dependent urban economies, the dichotomy between resource exploitation and ecological conservation presents a pronounced challenge. Traditional remote sensing assessments often overlook interplay mining activities environmental dynamics. To address this gap, researchers developed an innovative Resource-Based City Ecological Index (RCEI), anchored in Pressure–State–Response (PSR) framework synthesized from six discrete indicators. Utilizing geodetic data, RCEI facilitated comprehensive spatiotemporal analysis of Jincheng City’s quality 1990 to 2022. The findings corroborated RCEI’s efficacy providing nuanced portrayal state within regions. (1) predominantly sustained mudhopper-tier status, exhibiting overarching trend amelioration throughout study period. (2) Disparities landscape were at county level, with Moran’s exceeding 0.9, signifying clustered pattern. High–high (H–H) zones prevalent areas elevated altitude dense vegetation, whereas low–low (L–L) sectors. (3) Further, buffer zone two coal mines, differing their chronology, geographical positioning, operational elucidated impact exerted over 32-year trajectory. These insights furnish robust scientific technical foundation for resource-centric cities fortify safeguarding advance sustainable development stratagems.

Language: Английский

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A Comparative Study for Evaluating the Groundwater Inflow and Drainage Effect of Jinzhai Pumped Storage Power Station, China

Applied Sciences, Journal Year: 2024, Volume and Issue: 14(19), P. 9123 - 9123

Published: Oct. 9, 2024

Various hydrogeological problems like groundwater inflow, water table drawdown, and pressure redistribution may be encountered in the construction of hydraulic projects. How to accurately predict occurrence inflow assess drainage effect during are still challenging for engineering designers. Taking Jinzhai pumped storage power station (JPSPS) China as an example, this paper aims use different methods calculate rates underground powerhouse evaluate caused by tunnel construction. The consist analytical formulas, site rating (SGR) method, Signorini type variational inequality formulation. results show that considering stable overestimate caverns drained conditions, whereas SGR method with available hydro-geological parameters obtains a qualitative hazard assessment preliminary phase. numerical solutions provide more precise reliable values complex geological structures seepage control measures. Moreover, effects, including seepage-free surface, pore redistribution, gradient, have been evaluated using various synthetic cases. Specifically, faults intersecting on significantly change flow regime around caverns. This comparative study can not only exactly identify capabilities cavern but also comprehensively

Language: Английский

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