نتایج جستجو برای: basin analysis

تعداد نتایج: 2870325  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده منابع طبیعی و علوم دریایی 1387

چکیده ندارد.

Today, due to climate change, natural hazards and how to deal with them are among the most important concerns of researchers in environmental planning and crisis management. The purpose of this study is the assessment of the potential flood risk in Sarbaz drainage basin. For this purpose, the databases including elevation, slope, geological characteristics, soil characteristics, precipitation, ...

Journal: :اکو هیدرولوژی 0
حمیدرضا قره چایی دانشجوی دکتری، دانشکدۀ منابع طبیعی، دانشگاه تهران، کرج علیرضا مقدم نیا دانشیار، دانشکدۀ منابع طبیعی، دانشگاه تهران، کرج آرش ملکیان دانشیار، دانشکدۀ منابع طبیعی، دانشگاه تهران، کرج آزاده احمدی استادیار، دانشکدۀ عمران، دانشگاه صنعتی اصفهان، اصفهان

arid and semi-arid ecosystems are very sensitivity to changes. fluctuations in climate variables and increasing human activities; result in the changes in hydrological processes of these ecosystems, and consequently, their structures degradation. in this study, hydro-climatic data of the bakhtegan basin for the period of 1972–2011, were analyzed to assess effects of climate variability and huma...

Journal: :اقتصاد و توسعه کشاورزی 0
علیرضا نیکوئی منصور زیبایی

irrigated agriculture is an important contributor to the expansion of national food supplies and is expected to play a major role in food security of developing countries. such countries face water crisis for securing the food staples. well designed water resource policies potentially can improve the water allocation and use efficiency as well as the food security objectives. this paper present...

2007
Mehdi Lhommeau Luc Jaulin Laurent Hardouin

This paper proposes a new approach to solve the problem of computing the capture basin C of a target T. The capture basin corresponds to the set of initial states such that the target is reached in finite time before possibly leaving of constrained set. We present an algorithm, based on interval analysis, able to characterize an inner and an outer approximation C− ⊂ C ⊂ C+ of the capture basin....

2009
M. Lhommeau L. Jaulin L. Hardouin L. HARDOUIN

This paper proposes a new approach for computing the capture basin C of a target T. The capture basin corresponds to the set of initial state vectors such that the target could be reached in finite time via an appropriate control input, before possibly leaving the target. Whereas classical capture basin characterization do not provide any guarantee on the set of state vectors that belong to the...

Aims & Backgrounds: Today, soil erosion and sediment production are considered a danger to humans and their lives, so in areas where soil erosion is not controlled, soils gradually erode and lose their fertility. The aim of this study is to model the relationship between the amount of suspended sediment load and the geomorphic features of the Nirchai River Basin. Methodology: In this study, GIS...

2007
WILBERT WEIJER FRÉDÉRIC VIVIER SARAH T. GILLE HENK A. DIJKSTRA

In this paper the spectrum of barotropic basin modes of the Argentine Basin is shown to be connected to the classical Rossby basin modes of a flat-bottom (constant depth), rectangular basin. First, the spectrum of basin modes is calculated for the Argentine Basin, by performing a normal-mode analysis of the barotropic shallow-water equations. Then a homotopy transformation is performed that gra...

Journal: :int. journal of mining & geo-engineering 2014
amir negahdari mansour ziaii javad ghiasi-freez

understanding the performance and role of each formation in a petroleum play is crucial for the efficient and precise exploration and exploitation of trapped hydrocarbons in a sedimentary basin. the lorestan basin is one of the most important hydrocarbon basins of iran, and it includes various oil-prone potential source rocks and reservoir rocks. previous geochemical studies of the basin were n...

2004
E. KUDO M. OSTROWSKI

In this research, a Decision Support System (“DSS”) was developed, using a combination of various existing models for Integrated Water Management (“IWM”). This DSS is then applied to a small urbanized basin, the Taguri-River basin in Japan. In developing the DSS, different existing dynamic and steady state models were combined. These models include a rainfall-runoff analysis model, two river an...

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