Results 21 to 30 of about 560,054 (264)

Understanding of hydrological bivariate return periods and its application to drought analysis

open access: yesShui kexue jinzhan, 2019
Some well-known notions in univariate statistical analysis becomes misleading in the multivariate context,and have not been correctly understood by many researchers.
ZHOU Ping   +4 more
doaj   +1 more source

Differentiated Spatial-Temporal Flood Vulnerability and Risk Assessment in Lowland Plains in Eastern Uganda

open access: yesHydrology, 2022
This study was conducted to map flood inundation areas along the Manafwa River, Eastern Uganda using HECRAS integrated with the SWAT model. The study mainly sought to evaluate the predictive capacity of SWAT by comparisons with streamflow observations ...
Godwin Erima   +4 more
doaj   +1 more source

Characteristics of Precipitation During Meiyu and Huang-Huai Rainy Seasons in Anhui Province of China

open access: yesFrontiers in Earth Science, 2021
Based on the spatial distribution characteristics of the summer monsoon rain belt, Anhui Province of China is divided into three regions, namely, the south of the Yangtze River region (SYA), the Yangtze-Huai region (YHA), and the north of the Huaihe ...
Yuliang Zhou   +6 more
doaj   +1 more source

Enhancing the accuracy of tropospheric ozone prediction using probability distribution [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2023
Tropospheric ozone or ground-level ozone, mainly found near ground level, has adverse effects on human health. Distribution fitting is useful for predicting the probability, or forecasting the frequency of recurrence, of a phenomenon in a specific ...
Muhammad Ismail Jaffar   +3 more
doaj  

Joint and Conditional Probability Analysis of Flood and Daily Extreme Rainfall Using Copula Functions: A Case Study of the Kan Basin, Tehran [PDF]

open access: yesتحقیقات منابع آب ایران
In recent decades, the recurrent occurrence of destructive floods in the Kan basin, located in western Tehran, has highlighted the need for a more detailed analysis of the rainfall–runoff relationship.
Mohammad Reza Momeni   +2 more
doaj   +1 more source

Estimation of the Return Periods in Hydrology

open access: yesAdvances in Environmental and Engineering Research, 2022
A filtered Poisson process is proposed as a model for river flows. With the help of real-life data, the model parameters are estimated. Mathematical formulae are derived in order to estimate the various return periods of the river. An application to two rivers shows that the point estimates are very close to the corresponding values computed by ...
openaire   +2 more sources

Economic and Financial Evaluation of Mahogany Tree Cultivation Using Wastewater [PDF]

open access: yesJournal of Agricultural Economics and Social Sciences
Water resources in Egypt are subject to external pressures, stemming from its status as a downstream country on the Nile River, where 90% of its water resources originate outside its borders.
A. Abdel Rahman   +3 more
doaj   +1 more source

Change in return period of storm flood in plain river network area under urbanization—taking Wuchengxiyu region of Taihu Lake basin as a case study

open access: yesShuili Shuiyun Gongcheng Xuebao, 2019
Taking the Wuchengxiyu region as an example, based on the long-term sequence daily rainfall and water level data, the cumulative anomaly method, Pearson frequency curve and Kriging interpolation method are used to analyze the changes of the water level ...
WANG Danqing   +5 more
doaj   +1 more source

CLIMATIC CHANGE DETECTION IN THE NORTHWESTERN COASTAL ZONE (EGYPT) AND ITS POSSIBLE IMPACT ON WATER RESOURCE [PDF]

open access: yesEgyptian Journal of Desert Research, 2015
In the study area, which extends for about 500 km along the Mediterranean coast of Egypt, the seasonal rainfall is the sole source of water for development activities through either runoff harvesting or shallow aquifer recharge.
Salah Abdel Moghith   +2 more
doaj   +1 more source

On Estimating Hurricane Return Periods [PDF]

open access: yesJournal of Applied Meteorology and Climatology, 2010
Abstract Interest in hurricane risk usually focuses on landfalling events of the highest intensity, which cause a disproportionate amount of hurricane-related damage. Yet assessing the long-term risk of the most intense landfalling events is problematic because there are comparatively few of them in the historical record. For this reason,
Emanuel, Kerry Andrew, Jagger, Thomas
openaire   +3 more sources

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