情報地質
Online ISSN : 1347-541X
Print ISSN : 0388-502X
ISSN-L : 0388-502X
24 巻, 1 号
選択された号の論文の1件中1~1を表示しています
  • Alaa A. MASOUD
    2012 年 24 巻 1 号 p. 3-13
    発行日: 2012/03/25
    公開日: 2013/05/01
    ジャーナル フリー
    Abstract : Spatio-temporal dynamics and hydrochemistry of the shallow groundwater aquifers underlying the recently reclaimed lands in Tahrir, Wadi El-Natrun, and Burg Al-Arab areas, located west of the Nile Delta region of Egypt are investigated. The prime objective was to understand causes and propose proactive controls by monitoring changes occurred using the available data. Groundwater samples from 134 sites were collected in 2006-2007 period. Parameters describing temperature, pH, electrical conductivity (EC) and total dissolved solids are in-situ recorded using portable meters. Major elements of the cations (K+, Na+, Ca2+, and Mg2+) and anions (SO42−, HCO3, Cl, and NO3) were carried out. Analysis of the groundwater samples was then performed to derive Sodium Adsorption Ratio (SAR), water types, and water quality according to the SAR against EC. The in-situ measured and estimated groundwater variables were then analyzed with the ordinary kriging implemented in the geostatistical analyst of the ArcGIS9.3 package. The experimental semivariograms and the best-fitted models for all variables were built based on trial and error parameter selection. Models attained the best goodness of fit were selected for interpreting the results. Results indicated warning levels of water table, salinity, nitrates, water types, and water quality. Spatio-temporal variations and the controlling factors are characterized over the studied areas. Based on the results, measures are proposed by taking into consideration of the local specific attributes affecting the groundwater conditions for each area. The proactive and the ameliorative measures are expected to predict impacts that may rise from the region's acute water scarcity and quality deterioration in the near future.
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