Results 21 to 30 of about 7,506,901 (288)

Bivariate Flood Frequency Analysis Using the Copula Archimedean Function (Gumbel–Hougaard) [PDF]

open access: yesپژوهش‌های آبخیزداری, 2020
Flood is a multivariate and complex phenomenon that has a random nature. In conventional methods of flood frequency analysis, only flood peak variable is important and it is assumed that the variable under consideration follows a particular parametric ...
Mohammad Reza Goodarzi   +3 more
doaj   +1 more source

Application of Nested Copulas for Flood Frequency Analysis (Case Study: Dez Basin, Iran) [PDF]

open access: yesWater Harvesting Research
One of the hydrological phenomena with a very complex nature is the flood phenomenon, which causes a lot of damage if it occurs. In this study, the joint frequency analysis of flood characteristics at the Sepid Dasht-Zaz station in the Dez basin, Iran ...
Alireza Amirrezaeieh   +2 more
doaj   +1 more source

Meteorological drought analysis using copula theory and drought indicators under climate change scenarios (RCP)

open access: yesMeteorological Applications, 2020
The study was carried out to assess meteorological drought on the basis of the standardized precipitation index (SPI) and standardized precipitation evapotranspiration index (SPEI) evaluated in future climate scenarios.
Tayyebeh Mesbahzadeh   +4 more
doaj   +1 more source

Analyzing the duration frequency and severity of drought using copula function in the Yazd city

open access: yesJournal of Water and Climate Change, 2022
Duration and severity are the two main variables used in drought analysis. The copula functions are appropriate for multivariate drought analysis, as it lacks the limitations of the classical multivariate distribution function.
Mehrtash EskandariPour   +1 more
doaj   +1 more source

Frequency Analysis of Precipitation Anomaly Percentage and Stream Flow Drought Using Copula Functions [PDF]

open access: yesWater Harvesting Research, 2022
The purpose of this research is to joint frequency analyze of precipitation anomaly percentage as a meteorological drought index and flow rate at Chalekhmaz station located in the Zarinerood basin at south of Lake Urmia in the period of 1995-2016, which ...
Mohammad Nazeri Tahroudi   +1 more
doaj   +1 more source

Risk analysis of meteorological, agricultural, and hydrological drought events and study of drought propagation features: a case study in the upper Tapti River sub-basin, Central India

open access: yesJournal of Water and Climate Change, 2023
As a natural hazard, drought is a complex multivariate phenomenon that requires more comprehensive analysis. In this study, we studied meteorological, agricultural, and hydrological drought events with precipitation, soil moisture, and stream flow data ...
P. Kanthavel, C. K. Saxena, R. K. Singh
doaj   +1 more source

Joint return periods in hydrology: a critical and practical review focusing on synthetic design hydrograph estimation [PDF]

open access: yes, 2012
Abstract. Most of the hydrological and hydraulic studies refer to the notion of a return period to quantify design variables. When dealing with multiple design variables, the well-known univariate statistical analysis is no longer satisfactory and several issues challenge the practitioner.
S. Vandenberghe   +6 more
openaire   +1 more source

Coordination of Fleet Battle Experimentation and Joint Experimentation Programs, Initial Report for Period January 1999 - September 1999 [PDF]

open access: yes, 1999
Initial Report for Period January 1999 - September 1999Approved for public release; distribution is unlimited.NAThe Institute for Joint Warfare Analysishttp://archive.org/details ...
Schacher, Gordon E.
core   +2 more sources

Intensification of Global Hydrological Droughts Under Anthropogenic Climate Warming

open access: yesWater Resources Research, 2023
Anthropogenic climate warming is expected to accelerate the hydrological cycle with significant consequences for hydrological droughts. However, a systematic understanding of climate warming impacts on the global hydrological droughts and their driving ...
Lei Gu   +8 more
doaj   +1 more source

Bivariate Analysis of Extreme Precipitation Using Copula Functions in Arid and Semi-Arid Regions

open access: yesAtmosphere, 2023
This study analyzed extreme precipitation events, using daily rainfall data for 1966–2015. A Mann–Kendall trend test was used to evaluate trends in extreme precipitation, copula functions were applied to compute the joint return periods of extreme events,
Zeynab Pabaghi   +4 more
doaj   +1 more source

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