نتایج جستجو برای: hydrologists

تعداد نتایج: 296  

Journal: :Proceedings of IAHS 2021

Abstract. The FRIEND-Water program (FWP) is the oldest and most transverse (i.e. Flagship Initiative) within Hydrological Intergovernmental Program (IHP) from UNESCO. FRIEND means “Flow Regimes International Experimental Network Data”. FWP dedicated to allow large communities of hydrologists associated disciplines collaborate across borders on common shared data scientific topics which are addr...

Journal: :Water Resources Research 2021

This paper is derived from a keynote talk given at the Google's 2020 Flood Forecasting Meets Machine Learning Workshop. Recent experiments applying deep learning to rainfall-runoff simulation indicate that there significantly more information in large-scale hydrological data sets than hydrologists have been able translate into theory or models. While growing interest machine sciences community,...

Journal: :IEEE Access 2023

Hydrologists usually gain insights into topographic variability by using a high-performance algorithm to estimate the catchment area from digital elevation model (DEM) image. In literature, grid-based algorithms are more popular than contour-based algorithms; however, existing ones cannot reduce error when higher resolution DEM is available. This paper introduces new algorithm, formulated with ...

Journal: :Frontiers in forests and global change 2021

Forests are integral to sustaining clean water resources and healthy watersheds. It is critical, therefore, that managers fully understand the potential impacts of their actions on myriad ecosystem services provided by forested While forest hydrologists have long used paired-watershed experiments elucidate complex interactions between management watershed biogeochemical ecohydrological processe...

Journal: :Sustainability 2022

The interest in the use of mathematical models for simulation hydrological processes has largely increased especially prediction runoff. It is subject extreme research among engineers and hydrologists. This study attempts to develop a simple conceptual model that reflects features arid environment where availability data scarce. simulates an hourly streamflow hydrograph peak flow rate any given...

Journal: :Humanities & social sciences communications 2023

Abstract Hydrology education for hydrological professionals is an important field due to the complex and multifaceted water issues that hydrologists face. Currently, hydrology at Chinese universities mainly focused on engineering, which leads inadequate scientific professional training from perspective of interdisciplinary educational framework. In this context, knowledge skills future cannot b...

ژورنال: علوم آب و خاک 2001
اسلامیان, سید سعید , ایزدبخش, محمدعلی , موسوی, سید فرهاد ,

Flood is one of the catastrophic events that has attracted the hydrologists’ attention. In this research one of the important flood indices, i.e. maximum-daily mean-discharge, was determined for several western Iran watersheds, namely, in the catchments of Gamasiab, Qarasou, Saimare, Kashkan, Sezar and Abshineh. Daily data were prepared from stream-gauging stations and a 30-year concurrent peri...

2015
Y. Laaroussi Z. Guennoun A. Amar

Modeling and forecasting dynamics of rainfall occurrences constitute one of the major topics, which have been largely treated by statisticians, hydrologists, climatologists and many other groups of scientists. In the same issue, we propose, in the present paper, a new hybrid method, which combines Extreme Values and fractal theories. We illustrate the use of our methodology for transformed Embe...

2007
KUNIYOSHI TAKEUCHI

Recent climatic variability seems to be intensifying the hydrological extremes resulting in devastating hydrological hazards, especially floods all over the world, including the arid regions. Disasters are always more tragic in poor countries than in rich ones, as more poor people seem to suffer and die, and the economic losses have a greater impact. On the other hand, in advanced countries, al...

2008
Richard S. Lindzen

Most of the literate world today regards "global warming" as both real and dangerous. Indeed, the diplomatic activity concerning warming might lead one to believe that it is the major crisis confronting mankind. The June 1992 Earth Summit in Rio de Janeiro, Brazil, focused on international agreements to deal with that threat, and the heads of state from dozens of countries attended. I must stat...

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