Results 31 to 40 of about 221,223 (264)
Flow Duration Curves from Surface Reflectance in the Near Infrared Band
Applied Sciences, 2021 Flow duration curve (FDC) is a cumulative frequency curve that shows the percent of time a specific discharge has been equaled or exceeded during a particular period of time at a given river location, providing a comprehensive description of the ...
Angelica Tarpanelli +1 more
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The Role of Rainy Days in Predicting the Flow Duration Curve in Different Climates of Iran [PDF]
پژوهشهای آبخیزداری, 2019 The Improvement and development of predictions in ungauged catchments require recognizing effective factors and understanding the interactions between different components of the catchments and hydrological response in different climatic zones.
Rahim Kazemi, Foroud Sharifi
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Analytical confidence intervals for index flow flow duration curves [PDF]
Water Resources Research, 2011 This study illustrates how analytical period‐of‐record flow duration curves (FDCs) and annual FDCs (AFDCs) of daily streamflow series developed in an index flow framework can be complemented by theoretical confidence intervals (CIs) deduced from the theory of nonparametric CIs for quantiles and fractional order statistics.
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Kuwait Journal of Science, 2023 One of the main challenges in karst water management is the limited availability of measured hydrogeological data. This research aimed to employ a simplified approach for aquifer characterization by applying discharge variability, storage capacity, and ...
Tjahyo Nugroho Adji +4 more
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Dimensionless flow Duration Curve in Natural River [PDF]
Journal of Korea Water Resources Association, 2003 유황곡선은 하천유량의 변동성을 함축적으로 나타내고 있다. 본 연구는 인위적인 유량조절이 없는 자연하천의 무차원 유황곡선을 조사하여 보았다. 유황분석은 IHP대표유역과 대하천 주요 수위관측 지점의 수문자료를 토대로 수행하였다. 유황은 유역면적에 의존하나 유황계수는 판수계수를 제외하면 유역면적의 변화에 민감하지 않았으며 특히 풍수계수는 일정한 값을 나타내었다. 본 연구에서 평수량에 대한 갈수량 및 저수량의 비로 정의한 유황변동계수는 유역면적이 증가하면 작아지고 하천 경사의 증가에 따라 커진다. 저수유황변동에 비하여 갈수유황 변동이 유역면적의 변화에 영향을 받는 것으로 보여진다. 【Flow duration curves provide
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Journal of Hydrology: Regional Studies, 2017 Study region: The study region is the state of Oklahoma, USA, which has a varied climate. Precipitation increases west to east, and temperature decreases south to north across the state. Accordingly, Oklahoma has been divided into nine Climate Divisions,
R.B. Miller, G.A. Fox
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Performance evaluation of flow duration curves regionalization methods [PDF]
RBRH, 2019 ABSTRACT The main objective of the study was the evaluation of Characteristic Values and Exponential Curve methods as alternatives for flow permanence curves regionalization. Additionally, the use of regional flow indicators for the appropriation of reference flows associated with flow permanence curves was evaluated.
Marcos Vinícius Alpoin Piol +3 more
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Calibration of hydrological models using flow-duration curves [PDF]
Hydrology and Earth System Sciences, 2010 Abstract. The degree of belief we have in predictions from hydrologic models will normally depend on how well they can reproduce observations. Calibrations with traditional performance measures, such as the Nash-Sutcliffe model efficiency, are challenged by problems including: (1) uncertain discharge data, (2) variable sensitivity of different ...
Westerberg, I K +7 more
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Technical note: Statistical generation of climate-perturbed flow duration curves
Hydrology and Earth System Sciences, 2023 Abstract. Assessing the robustness of a water resource system's performance under climate change involves exploring a wide range of streamflow conditions. This is often achieved through rainfall–runoff models, but these are commonly validated under historical conditions with no guarantee that calibrated parameters would still be valid in a different ...
Yildiz, V. +3 more
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Recognition and Analysis of Surface Water Resources Capacity, Prerequisite of Land Use Planning in the Province of Kerman [PDF]
پژوهشهای آبخیزداری, 2020 Water is a key element of land use planning and sustainable development, and recognizing and analyzing of water resources capacity is a prerequisite for land use planning.
Rahim Kazemi +2 more
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