نتایج جستجو برای: hydrological

تعداد نتایج: 16296  

2011
J. A. Velázquez F. Anctil M. H. Ramos

An operational hydrological ensemble forecasting system based on a meteorological ensemble prediction system (M-EPS) coupled with a hydrological model searches to capture the uncertainties associated with the meteorological prediction to better predict river flows. However, the structure of the hydrological model is also an important source of uncertainty that has to be taken into account. This...

2012
Jawad S. Alagha Md Azlin Md Said Yunes Mogheir

Hydrological processes such as runoff and contaminant transport are usually affected by various complex interrelated variables. Moreover, uncertainties in variables estimate are the common stamp of these processes. Due to this complex nature, Physical modeling of any hydrological system requires availability of large, accurate and detailed data related to all influencing variables, which are no...

2013
H. S. Sundqvist K. Holmgren J. Fohlmeister Q. Zhang M. Bar Matthews C. Spötl H. Körnich

Department of Physical Geography and Quaternary Geology, Stockholm University, S-10691 Stockholm, Sweden, Bolin Centre for Climate Research, Stockholm University, S-10691 Stockholm, Sweden, Heidelberg Academy of Sciences, University of Heidelberg, Im Neuenheimer Feld 229 D-69120 Heidelberg, Germany, Geological Survey of Israel, 30 Malchei Israel St, Jerusalem, Israel 95501, Department of Geolog...

Journal: :ISPRS Int. J. Geo-Information 2016
Xi Zhai Peng Yue Mingda Zhang

Rapid advancements in Earth-observing sensor systems have led to the generation of large amounts of remote sensing data that can be used for the dynamic monitoring and analysis of hydrological disasters. The management and analysis of these data could take advantage of distributed information infrastructure technologies such as Web service and Sensor Web technologies, which have shown great pot...

Journal: :PloS one 2016
Anne F Van Loon Bram Te Brake Marjolein H J Van Huijgevoort Roel Dijksma

Mangrove restoration projects, aimed at restoring important values of mangrove forests after degradation, often fail because hydrological conditions are disregarded. We present a simple, but robust methodology to determine hydrological suitability for mangrove species, which can guide restoration practice. In 15 natural and 8 disturbed sites (i.e. disused shrimp ponds) in three case study regio...

2017
Lu Zhuo Dawei Han

Reliable estimation of hydrological soil moisture state is of critical importance in operational hydrology to improve the flood prediction and hydrological cycle description. Although there have been a number of soil moisture products, they cannot be directly used in hydrological modelling. This paper attempts for the first time to build a soil moisture product directly applicable to hydrology ...

2016
Kaisheng Luo Fulu Tao Juana P. Moiwo Dengpan Xiao

The contributions of climate and land use change (LUCC) to hydrological change in Heihe River Basin (HRB), Northwest China were quantified using detailed climatic, land use and hydrological data, along with the process-based SWAT (Soil and Water Assessment Tool) hydrological model. The results showed that for the 1980s, the changes in the basin hydrological change were due more to LUCC (74.5%) ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید چمران اهواز - دانشکده مهندسی علوم آب 1393

drought is transient phenomenon , slow , repetitive and integral part of the climate of each region. drought begins with a substantial reduction in precipitation over the long-term average rainfall and over time, reduced soil moisture and surface and ground water resources will continue to decrease. this phenomenon is the most important in bakhtegan basin because of its importance in strategic ...

2006
Vimal Sharma David Swayne David Lam William Schertzer

Hydrological models have been increasing in complexity over the years. These models rely on their calibration to simulate real world conditions as close as possible. Calibration is a tedious and time-consuming process. An auto-calibration algorithm (SCE-UA) developed by Duan et al. [1992], has been successfully used in hydrological modeling area. This is a serial algorithm and as complexity of ...

2017
Jian Zhou Li-Di Zheng Xu Pan Wei Li Xiao-Ming Kang Jing Li Yu Ning Ming-Xiang Zhang Li-Juan Cui

Hydrological conditions determine the distribution of plant species in wetlands, where conditions such as water depth and hydrological fluctuations are expected to affect the interspecific interactions among emergent wetland species. To test such effects, we conducted a greenhouse experiment with three treatment categories, interspecific interaction (mixed culture or monoculture), water depth (...

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