Geostatistical approach for the assessment of the water reservoir capacity in arid regions: a case study of the Akdarya reservoir, Uzbekistan

Rakhmatullaev, Shavkat; Marache, Antoine; Huneau, Frédéric; Coustumer, Philippe Le; Bakiev, Masharif; Motelica-Heino, Mikaël

doi:10.1007/s12665-010-0711-3

Cited by 37 publications

(14 citation statements)

References 29 publications

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“…Sediment accumulation leads to a reduced water storage capacity of a waterbody (Rakhmatullaev et al, 2011). Basson (2010), Rakhmatullaev et al (2011), Schleiss, Franca, Juez, and Cesare (2016) and Zarris and Lykoudi (2017) reported that a global water storage capacity of 0.5%-1% is annually lost to sedimentation. Further, the worldwide annual storage capacity loss attributable to sedimentation is greater than the capacity increase from the construction of new reservoirs (Schleiss, De Cesare, & Althaus, 2008).…”

Section: Introductionmentioning

confidence: 99%

Sediment distribution and accumulation in Lake Naivasha, Kenya over the past 50 years

et al. 2019

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Although surface waterbodies are water sources for socio‐economic activities and ecosystems, their functions are threatened by sedimentation. Sedimentation of lakes and reservoirs can result in a loss of storage capacity and altered water quality. The present study assessed the sedimentation status of Lake Naivasha, Kenya, based on sediment distribution and accumulation over the past 50 years, using a Bathymetric Survey System (BSS). The BSS uses multi‐frequency Acoustic Profiling System (APS) to map recently deposited sediments. Sediment core samples were collected with a vibe‐ coring device and dated. Sediment layers corresponding to a period of the past 20 and 50 years were identified. Sediment cores and acoustic images were subsequently used to determine sediment thickness within the lake. The collected depth data from multi‐frequency APS, and dated cores were processed in DepthPic and Surfer software. The sediment depth was extracted in DepthPic, while the sediment volume and distribution were generated from Surfer software. The results from present study indicated that sediment distribution varied from one part of the lake to another for the past 20 and 50 years. High sediment thickness observed in the south‐west and eastern parts of the lake. Between 1996–2016 and 1966–2016 periods, the maximum accumulated sediment thickness was found to be about 0.55 and 1.9 m, with an average sediment thickness of 0.25 and 0.56 m, respectively. The mean sediment load corresponding to the 1966–1996 and 1996–2016 periods was 2.78 × 105 and 4.61 × 105 t/year, respectively. It was found that sediment load into Lake Naivasha has been increasing in the recent past. Based on the present the study, it was found that combined use of BSS, sediment cores and dating can be adopted in many lakes and reservoirs to determine sediment thicknesses even where no prior bathymetric surveys exist for comparison.

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Section: Introductionmentioning

confidence: 99%

Sediment distribution and accumulation in Lake Naivasha, Kenya over the past 50 years

et al. 2019

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“…This quantity is estimated at 6.8 km3/year for Uzbekistan [6]. However, the actual groundwater abstraction is somewhat higher at approximately 7.5 km3/year, and thus has lead to serious surface flow reduction [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Groundwater resources of Uzbekistan: an environmental and operational overview

Rakhmatullaev¹,

Huneau²,

Kazbekov³

et al. 2012

Open Geosciences

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AbstractAs a result of the massive irrigation development during the Soviet Union era and intensive chemization of agriculture, the surface runoff quality has been degraded in this arid and endorheic region. Moreover hydraulically related groundwater has also been affected. Excessive irrigation has lead to land salinization, which now threatens the soil quality of significant areas where crop yields would be at risk in the future. Since the collapse of the Soviet Union, institutional changes have been undertaken for the management of natural resources and water infrastructure. At present, underdeveloped and inadequate systems have been practiced with respect to groundwater use and management. This paper analyzes the present extent of groundwater resources with consideration to their reserves, quality evolution, and to technical, institutional and transboundary management practices in Uzbekistan.

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“…Contudo, tal aparelhagem é de difícil acesso e de alto custo, dificultando sua replicabilidade em estudos acadêmicos. Já no meio acadêmico científico, observa-se a utilização de diferentes métodos de levantamento batimétrico (SILVA, 2011;BICUDO;FORTI;BICUDO, 2002;BRASIL, 2011;CAMPAGNOLI, 2002;FURNANS;AUSTIN, 2008;RAKHMATULLAEV et al, 2011), muito em função dos recursos disponíveis e tempo hábil para sua execução.…”

Section: Introductionunclassified

“…Por fim, em um levantamento batimétrico qualquer, há a etapa de interpolação dos dados batimétricos/altimétricos para obtenção da imagem DEM (Digital Elevation Model). Dentre os inúmeros métodos de interpolação (matemáticos, trigonométricos ou geoestatísticos) existentes, como cita Landim (2000), há a geração de uma superfície digital ou imagem DEM, com relativa acurácia, e essa depende do interpolador adotado, da escala de trabalho e da eficiência no esforço amostral da variável espacial PETERSON, 2010;RAKHMATULLAEV et al 2011).…”

Section: Introductionunclassified

“…A partir da década de 80, a geoestatística alcançou novas aplicações da ciência (MONESTIEZ et al, 2001;FORTES et al, 2004;MCBRATNEY et al 2000), sendo utilizada até mesmo em trabalhos de sensoriamento remoto (ATKINSON; LEWIS, 2000) e de limnologia envolvendo qualidade e gerenciamento hídrico (SMAL et al, 2015;BATISTA, 2011;ALCANTARA, 2008;BURGOS-LEÓN et al, 2012;PEREIRA, 2008;RAKHMATULLAEV et al, 2011).…”

Section: Introductionunclassified

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Geoestatística e Ecotoxicologia como ferramentas para gestão de reservatórios

Leal¹

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Neste trabalho, objetivou-se o avaliar ecotoxicidade potencial do sedimento do Reservatório Guarapiranga da cidade de São Paulo (Brasil) frente a contaminação por metais, a fim de discutir sua qualidade e sua atual política de gerenciamento ambiental. Os metais analisados foram: Al, Cd, Cr, Cu, Fe, Mn, Pb e Zn. Utilizou-se das ferramentas de sistema de informação geográfica, geoprocessamento de imagens e da geoestatística para avaliação da dispersão espacial dos metais ao longo do sedimento do Reservatório, este considerado como aquela região de maior implicação ecotoxicológica para contaminantes metálicos. Analisaram-se também as variáveis granulometria, matéria orgânica, nitrogênio total, fósforo total e umidade do sedimento, a fim de se estudar quimiometria do sedimento, a fim de melhor compreender as distribuições dos contaminantes ao longo do sedimento. Observaram-se grande variabilidade quantitativa e espacial entre os metais analisados, denotando que o Reservatório Guarapiranga sofre contaminação por diferentes vias no sistema. Observou-se falta de correlação quimiométrica entre os parâmetros estruturais do sedimento com os contaminantes metálicos, denotando grande variabilidade interna desse sistema. Referente a política de manejo do Reservatório, especialmente relativa ao controle algal e cianofítico, observou-se um gerenciamento de grande impacto ecossistêmico, focado mais no custo imediato do que em planejamentos de longo prazo. Tal gerenciamento, hoje, traz risco ecotoxicológico ao reservatório, mas também à própria população tanto abastecida pelo reservatório quanto aquela exposta diretamente (recreação, esportes náuticos, alimentação).

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Geostatistical approach for the assessment of the water reservoir capacity in arid regions: a case study of the Akdarya reservoir, Uzbekistan

Cited by 37 publications

References 29 publications

Sediment distribution and accumulation in Lake Naivasha, Kenya over the past 50 years

Sediment distribution and accumulation in Lake Naivasha, Kenya over the past 50 years

Groundwater resources of Uzbekistan: an environmental and operational overview

Geoestatística e Ecotoxicologia como ferramentas para gestão de reservatórios

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