Journal of Environmental Hydrology
Electronic journal of the International Association
for Environmental Hydrology
On the World Wide Web at http://www.hydroweb.com
JEH Volume 9 (2001), Paper 15, August 2001
Posted August 31, 2001
GEOPHYSICAL STUDIES TO DETERMINE HYDRAULIC CHARACTERISTICS OF AN ALLUVIAL
M. Senthil Kumar
Centre for Geoscience and Engineering, Anna University, Chennai,
The vertical electrical sounding (VES) data obtained from 70 locations
in the unconsolidated sandy formation south of Chennai was interpreted,
and layer parameters such as true resistivity and thickness were determined.
Formation factor was calculated from the resistivity data. Three empirical
relationships were established: they are (i) the relationship between hydraulic
conductivity and formation factor, (ii) hydraulic conductivity and modified
aquifer resistivity, and (iii) transmissivity and transverse resistance.
The aquifer parameters of this alluvial aquifer have been estimated with
a reasonable accuracy using the relations between hydraulic properties
and electrical resistivity parameters. This study implies that geoelectrical
techniques offer an alternate approach for estimating the hydraulic characteristics
of alluvial aquifers.
Reference: Kumar, M. S., D. Gnanasundar and
Geophysical studies to determine hydraulic characteristics
of an alluvial aquifer, Journal of Environmental Hydrology, Vol. 9,
Paper 15, August 2001.
Centre for Geoscience and Engineering
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