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Isaiah J. Nirmal Kumar, George Basil, Rita Nirmal Kumar, Poliyaparambil Ravi Sajish and Viyol Shailendra

Abstract

Investigations on physicochemical parameters (temperature, pH, salinity, dissolved oxygen), including dissolved nutrients (PO4-P, NO3-N, SiO4-Si) and chlorophyll-a were carried out in the water off the mouth of the Narmada estuary from July 2008 to June 2009. The multivariate statistics and principal component analysis applied to the datasets, indicated two factors during the whole study period influencing variability in the water to the extent of 72%. Principal axis factoring and alpha factoring have been used to observe the mode of association of parameters and their interrelationships, for evaluating water quality. The results indicated the addition of phosphates and silicates to the coastal water by the Narmada estuary from natural sources during study period. The study indicated that the Narmada estuary adds sufficiently well-oxygenated, nutrient-rich water to the coastal region.

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Hamid Bouchelkia, Fadila Belarbi and Boualem Remini

Abstract

The sediment transport in rivers in Algeria is very high. However, it is poorly quantified in some wadis because of the absence and the shortage of data especially the concentration of fine particles and also the unavailability of gauging stations. To fill this gap, a technique for estimating sediment yield, based on data recorded at the gauging station has been developed. The estimation of suspended sediment yield was conducted by a statistical analysis with double correlation on average daily flow and solid concentrations. The results obtained by applying this model to the watershed Chellif are very encouraging because the correlation coefficients of the found models are between 61% and 91% for the first correlation and between 86% and 97% for the second correlation. The estimated quantity of suspended sediment load is between 2.35 and 4.12 million tonnes per year, it appears important; This is due to the vulnerability of the Chellif basin facing erosion, the importance of its area and the importance of fluid flows in wadi Cheliff and its torrential regime. Mention here some of the results and their significance to the study.

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Andrzej Olchawa and Aleksandra Gorączko

. The Proceeding of the 15th International Conference on Soil Mechanics and Foundation Engineering. Istambul, Turkey p. 603-606. MUHUNTHAN B. 1991. Liquid limit and surface area of clays. Geotechnique. Vol. 41 p. 135-138. NOWAK R. 2002. Statystyka dla fizyków [Statistics for physicists]. Warszawa. Wydaw. Nauk. PWN. ISBN 83-01-13702-9 pp. 664. OLCHAWA A. 1994. Określanie powierzchni właściwej gruntów iłowych na podstawie wilgotności desorpcyjnej [Determination of surface area of clays from desorption water content

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Marek Kopacz and Stanisław Twardy

References Dynowska I., Maciejewski M. (eds), 1991. Dorzecze górnej Wisły. (Upper Vistula River catchment). P. 1. Warszawa - Kraków, PWN: 1-341. Dynowska I., 1995. Wody. W: Karpaty Polskie, przyroda, człowiek i jego działalność. (Waters. In: Polish Carpathians, nature, man and his activity). Ed. J. Warszyńska. Kraków, Wydaw. UJ: 49-67. Elandt R., 1964. Statystyka matematyczna w zastosowaniu do doświadczalnictwa rolniczego. (Mathematical statistics applicable in agricultural

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Stanisław Lach and Leszek Opyrchał

dla przyrodników [Introduction to statistics for naturalists]. 5 th ed. Warszawa. Wydaw. Nauk. PWN. ISBN 978-83-01-17948-9 pp. 280. M olski T. 2012. Ziemne budowle hydrotechniczne i ich podłoże w warunkach filtracji naporowej [Earth-fill hydraulic structures and their foundation in pressured filtration conditions]. Infrastruktura i Ekologia Terenów Wiejskich. No 3/III p. 54–61. N owak R. 2002. Statystyka dla fizyków [Statistics for physicists]. 1 st ed. Warszawa. Wydaw. Nauk. PWN. ISBN 83-01-13899-8 pp. 127. O pyrchał L., L ach S. 2014

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Andrzej Olchawa and Jerzy Terlikowski

. Bydgoszcz, UTP: 1-139. Nowak R., 2002. Statystyka dla fizyków. (Statistics for physicist). Warszawa. Wydaw. Szkol. PWN: 1-664. Olchawa A., 1994. Określanie powierzchni właściwej gruntów iłowych na podstawie wilgotności desorpcyjnej. (Determination of surface area of clays from description water content). Wiadomości IMUZ, XVIII, 1: 107-118. Olchawa A., 2003. Właściwości gruntowych kompozytów jako materiału do budowy obwałowań przeciwpowodziowych. (The properties of soil composites as a material

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Krzysztof Pokonieczny

REFERENCES ARE 2014. Statystyka Elektroenergetyki Polskiej [Polish electric power statistics]. ISSN 1232-2415. B agheri B odaghabadi M., M artinez -C asasnovas J.A., S alehi M.H., M ohammadi J., E sfandiarpoor B orujeni I., T oomanian N., G andomkar A. 2015. Digital soil mapping using artificial neural networks and terrain-related attributes. Pedosphere. Vol. 25. Iss. 4 p. 580–591. DOI: 10.1016/S1002-0160(15)30038-2. Ć wik J., M ielińczuk J. 2009. Statystyczne systemy uczące się. Ćwiczenia w oparciu o pakiet R. Warszawa. Oficyna Wydaw

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Łukasz Bąk, Jarosław Górski and Bartosz Szeląg

reservoir in Wilcza Wo la]. Infrastruktura i Ekologia Terenów Wiejskich PAN. Nr 3/1 s. 31–43. Volk W. 1973. Statystyka stosowana dla inżynierów [Applied statistics for engineers]. Warszawa. WNT pp. 383.