2015
DOI: 10.30836/igs.1025-6814.2015.1.139053
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Method for Groundwater Recharge and Specific Yield Coefficient Estimation for Sandy Soils Using Water Table Fluctuations Analysis

Abstract: Розглянуті методичні аспекти оцінки інфільтраційного живлення ґрунтових вод на основі аналізу коливань рівня ґрунтових вод (РҐВ). Для аналізу використано дані автоматизованого моніторингу РҐВ, метеорологічних параметрів, вмісту вологи і капілярного (всмоктуючого) тиску в піщаному ґрунтовому профілі зони аерації експериментального полігону ІГН НАН України в Чорнобильській зоні відчуження в ПТЛРВ «Рудий ліс». Запропоновано вдосконалену процедуру (у порівнянні зі стандартною версією методу) визначення швидкості р… Show more

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“…Yearly cumulative percolation simulated with the calibrated groundwater fluctuation model corresponds to about 40% (±10% depending on the year) of the precipitation amount. Simulated percolation is yet generally lower (up to 30%) than the recharge rate estimated on the CPS area using the water table fluctuation analysis method (WTF, Healy and Cook, 2002) from 2000 to 2012 (Saprykin et al, 2015) (Table 4). Several reasons could explain this difference: the WTF method was applied on each single recharge event whereas the calibrated model tends to smooth some intra-annual variations of water table level; and simulated percolation could represent a net flow, which integrates plant uptakes, including from the saturated zone.…”
Section: Hydro-climatic Parametersmentioning
confidence: 88%
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“…Yearly cumulative percolation simulated with the calibrated groundwater fluctuation model corresponds to about 40% (±10% depending on the year) of the precipitation amount. Simulated percolation is yet generally lower (up to 30%) than the recharge rate estimated on the CPS area using the water table fluctuation analysis method (WTF, Healy and Cook, 2002) from 2000 to 2012 (Saprykin et al, 2015) (Table 4). Several reasons could explain this difference: the WTF method was applied on each single recharge event whereas the calibrated model tends to smooth some intra-annual variations of water table level; and simulated percolation could represent a net flow, which integrates plant uptakes, including from the saturated zone.…”
Section: Hydro-climatic Parametersmentioning
confidence: 88%
“…Cumulative annual precipitation and percolation estimated through the groundwater fluctuation model (this study) and WTF method(Saprykin et al, 2015) from 2000 to 2012.…”
mentioning
confidence: 99%