HU - Hydrogeology and Environment

Journal of the Dept. of Hydrogeology and Environment, University of Würzburg (ISSN 09309-3757)

Editorial office: BGI, Greisingstr. 8, 97074 Würzburg, GERMANY

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Vol. 9 (1995)



Abstract



Vol. 9: 

Zur Hydrogeologie der Insel Teneriffa unter besonderer Berücksichtigung der Isotopenhydrogeologie

[The Hydrogeology of the Tenerife Island in Special Consideration on Isotope Hydrology]

Jürgen Hoppe


Abstract:
Tenerife is the largest island of the Canarian archipel, situated approximately 300 km west of Africa and 400 km north of the turning-point of the cancer. Because of the influence of the passat-winds the island is climatically subdivided into two parts. Precipitation of over 1000 mm/a are possible in the North, arid conditions prevail in the Southern regions. Geologically and hydrogeologically the island is influenced by a structural system from the Teide Pico Viejo complex and acting as the main channel way for the magmas. Because of increased dike densities at the center, this structural system also influences the hydrogeological situation. Hydrogeologic models developed earlier show an interconnecting aquifer system for the island. Recent studies, however, indicate a zonation of the aquifer with clearly defined variations in permeabilities and hydraulic storage coefficients.

During this study waterchemical analyses were performed and isotop-hydrological profiles were established to show regional differences in aquifer behavior and to establish recharge areas for known groundwater occurrences. It was shown, that the groundwater in the north is recharged through overlaying lithologies, while the south is recharged through more distant areas higher elevations. Temperature calculations and age-determinations of the water yielded hydraulic velocities and conductivities of the area, conforming previous investigations of this study.

Paper language: german, german abstract





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