TITLE:
Protective Capacity Assessment of Vadose Zone Material by Geo-Electrical Method: A Case Study of Pakistan
AUTHORS:
Yawar Hussain, Sadia Fida Ullah, Muhammad Babar Hussain, Hernan Martinez-Carvajal, Abdul Qayyum Aslam
KEYWORDS:
Electrical Sounding, Vulnerability, Dar Zarrouk Parameter, Groundwater, Khizarabad Dairy, Sargodha
JOURNAL NAME:
International Journal of Geosciences,
Vol.7 No.5,
May
27,
2016
ABSTRACT: Rapid and poorly managed
agricultural landuse in Punjab plain is a major contention in groundwater
quality deterioration. This study is focused on the determination of
groundwater vulnerability potential of vadose material using geo-electrical
method. Total of eight electrical resistivity soundings with Schlumberger
electrode configuration are taken near Khizarabad Dairy Form, district
Sargodha. The instrument ABEM Terrameter SAS 300 is used for data acquisition.
The quantitative interpretation is done by 1D modelling of resistivity
soundings by using IX1D software. The results characterize the area into three
geo-electrical layers as dry alluvium (15.7 - 32.4 Ωm), saturated alluvium with
high resistivity (10 - 20 Ωm) and low resistivity (>10 Ωm). Aquifer
vulnerability is assessed by calculating Dar Zarrouk parameter (Longitudinal
Conductance) and thickness of vadose zone. Resultant vulnerability is divided
into three zones as low (>3.8 siemens) moderate (1.6 - 2.5 siemens) and high
(