Characterization of hydrocarbon spreading in an alluvial aquifer by cross correlation study of precipitation and contaminant content data
| العنوان: | Characterization of hydrocarbon spreading in an alluvial aquifer by cross correlation study of precipitation and contaminant content data |
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| المؤلفون: | J. Cruz-Sanjulián, Manuel Olías |
| المصدر: | Water, Air, & Soil Pollution. 81:337-347 |
| بيانات النشر: | Springer Science and Business Media LLC, 1995. |
| سنة النشر: | 1995 |
| مصطلحات موضوعية: | Hydrology, geography, Environmental Engineering, geography.geographical_feature_category, Hydrogeology, Ecological Modeling, Aquifer, Groundwater recharge, Contamination, Pollution, Permeability (earth sciences), Environmental Chemistry, Environmental science, Precipitation, Water pollution, Groundwater, Water Science and Technology |
| الوصف: | An accidental spillage of gasoline in a sector of the ‘Vega de Granada’ alluvial aquifer (Spain) affected a number of wells in the area. Hydrocarbon concentrations in ground water were monitored over a period of two years and five months. Monitoring indicated that the contamination levels tended to decrease, although sharp fluctuations were observed. Correlation and spectral analysis were used, among other methods, to construct a model of the hydrocarbon concentrations' evolution. We established the existence of maximum values of cross-correlation between the time series for hydrocarbon content and rainfall, with different lags for each well. Cross correlation is most clear in several wells located along a paleochannel in which the contamination tended to flow. Quantification was therefore possible of both the contaminant propagation rate and the permeability of the aquifer in that area. Although more detailed analysis showed that the high correlation values were due to a single data set (corresponding to the maximum concentrations observed in each well after a period of exceptionally heavy rainfall), the above conclusions may still be considered valid for periods of intense recharge of the aquifer, as demonstrated by an artificial recharge test. |
| تدمد: | 1573-2932 0049-6979 |
| DOI: | 10.1007/bf01104019 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::748fe46d184bf752e2a8814c49a86981 https://doi.org/10.1007/bf01104019 |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi...........748fe46d184bf752e2a8814c49a86981 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15732932 00496979 |
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| DOI: | 10.1007/bf01104019 |