Influence of Topography on the Groundwater Surface in Dunes Coastal – Pecém, Ceará
Abstract
Groundwater professionals and scholars have adopted regional aquifers that the water table moderately follows the topography. However, the study and deepening of this phenomenon is still incipient. Understanding the dynamics of the flow in porous media in sedimentary aquifers is strategic; it determines important water sources to support domestic, commercial and industrial supply. In this sense, this work addresses the impact of topography on the formation of the water table in dune regions of great occurrence on the coast of Brazil, taking as study the field of dunes in Pecém - Ceará. The topography influence suggested by Haitjema and Mitchell-Bruker (2005) was applied to conceptual models of the area. The recharge was applied to the annual average and to the average of each month of the year. The results indicates the change in the influence of the topography on the formation of the water table, mainly due to the seasonality of the rainfall regime, showing that only in the months of higher rainfall (March and April) are there indicators of the influence of topography on the shape of the water table.
References
AZEVEDO, J. M., Caracterização hidrológica e modelagem numérica de fluxo do aquífero dunas entre as praias de pecém e taíba. Dissertação (Mestrado em Tecnologia e Gestão Ambi-ental) - IFCE, Fortaleza, 2020.
BEAR, J. Dynamics of fluids in porous media. New York: Ameri-can Elsevier, 764p, 1972.
BEAR, J. Hydraulics of groundwater. Dover, New York, 569p, 1979.
DUPUIT, J. Études The oriques et Practiques sur le Mouvement des Eaux dans les Canaux Decouverts et à Travers les Terrains Perméables, 2nd ed. Paris, France: Dunod, 1863.
FORCHHEIMER, P. Uber die ergiebigkeit von brunnen-anlagen und sickerschlitzen. Zeitschrift des Architectenund Inge-nieurs Vereins zu Hannover 32, p. 539–564, 1886.
HAITJEMA, H.M. Analytic element modeling of groundwater flow. San Diego, California: Academic Press. 1995. https://doi.org/10.1016/B978-012316550-3/50005-2
HAITJEMA, H.M., MITCHELL-BRUKER, S. Are water tables a subdued replica of the topography? Ground Water, v. 43, n. 6, p. 781–786, 2005. https://doi.org/10.1111/j.1745-6584.2005.00090.x
HARR, M.E. Groundwater and seepage. New York: McGraw-Hill. 1962.
KING, F. H. Principles and conditions of movements of ground water. USGS 19th Annual Report, Part 2, 1899.
MINELLA, J.P.G., MERTEN, G.H., Índices topográficos aplica-dos à modelagem agrícola e ambiental. Ciência Rural, Santa Maria, v.42, n.9, p.1575-1582, set. 2012.
https://doi.org/10.1590/S0103-84782012000900010
MITCHELL-BRUKER, S. Modeling steady state groundwater flow and surface water interactions. Ph.D. diss., School of Public and Environmental Affairs, Indiana University, 1993.
MOORE, I.D. et al. Digital terrain modeling: a review of hydro-logical, geomorfological and biological applications. Hydrologi-cal Processes, v.5, p.3-30, 1991.
https://doi.org/10.1002/hyp.3360050103
PORTELA, J. P.; FREIRE, G. S. S.; MORAIS, M. V. A. R. Análise do uso e ocupação do litoral de São Gonçalo do Amarante – Ceará – Brasil, Revista de Geociências do Nordeste, v. 3, n. 2, 2017. https://doi.org/10.21680/2447-3359.2017v3n2ID12928
STRACK, O.D.L. Ground water mechanics. Englewood Cliffs, New Jersey: Prentice Hall, 1989.
TECKLENBURG, C., BLUME, T. Identifying, characterizing and predicting spatial patterns of lacustrine groundwater dis-charge, Hydrology and Earth System Sciences, v. 21, n. 10, p. 5043-5063, 2017. https://doi.org/10.5194/hess-21-5043-2017
TOTH, J. A theoretical analysis of groundwater flow in small drainage basins. Journal of Geophysical Research, v. 68, n. 16, p.4795–4812, 1963.
https://doi.org/10.1029/JZ068i016p04795
ZHANG X. et. al. Fractal behaviors of hydraulic head and sur-face runoff of the nested groundwater flow systems in re-sponse to rainfall fluctuations. Geophysical Research Let-ters, v. 49, n. 2, 2022. https://doi.org/10.1029/2021GL093784
ZHOU, Y., et. al., Opportunities and Challenges in Computing Fresh Groundwater Discharge to Continental Coastlines: A Multimodel Comparison for the United States Gulf and Atlan-tic Coasts, Water Resources Research, v. 54, 10, p.8363-8380, 2018. https://doi.org/10.1029/2018WR023126
ZHOU, Y., et. al., Fresh Submarine Groundwater Discharge to the Near‐Global Coast. Geophysical Research Letters, v. 46, 11, p.5855-5863, 2019.