Resumo

UBEID, Khalid F  e  ALBATTA, Alhasan S. Sand dunes of the Gaza Strip (southwestern Palestine): morphology, textural characteristics and associated environmental impacts. Earth Sci. Res. J. [online]. 2014, vol.18, n.2, pp.131-142. ISSN 1794-6190.

Sand dunes are wide spread in the Gaza Strip and are present in its northern, central and southern regions. Thirty sand samples were collected at seven locations along the middle region of the Strip. The coordinates for each sampling site were positioned using GPS and processed with ArcGIS software. Mechanical and chemical properties were examined to determine the textural characteristics and carbonate contents of the dune sands. The mean grain size is fine to medium, and the sands range from moderate- to well-sorting. The skewness is fine to very fine, and the kurtosis ranges from mesokurtic to very leptokurtic. Additionally, the results show that the carbonate content ranges from 1.5% to 5%. The high permeability, good porosity, and low carbonate content of the sand dunes in the Gaza Strip have led to more groundwater pollution via leachates percolating from the solid waste landfills and basins from wastewater treatments constructed above the sand dunes. Sand quarries have also changed the natural landscape of the Gaza Strip. These quarries were excavated randomly, used for a short period and then disused. This random and unregulated excavation has led to the destruction of natural habitats for flora and fauna.

Palavras-chave : Beach dunes; desert dunes; grain size distribution; Gaza Strip; Palestine.

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