APPLICATION OF VERTICAL GRADIENT METHODS OF MICROGRAVITY TIME FUNCTION TO DETERMINE GROUND WATER REDUCTION IN SEMARANG PERIOD OF 2013
ABSTRACT The development
of Semarang city
requires the availability
of water for
daily use and
industry in line
with population growth.
Uncontrolled use of water will damage the groundwater system. The purpose of
this study was to determine the zone of the decrease of water
level to obtain information about
area that utilizes excess water. The method used
is a micro-gravity vertical gradient
between times. Gravity measurements were done at 124 points
spread evenly betweenMay and October
2013. The results
showed that there
was a decrease
in ground water
level in the
Industries areaKaligawe, Tanah
Mas, and Tlogosori which was identifi ed with the vertical gradient anomaly of
micro gravity between the times from May to October 2013. The regions which
have high negative changes in ground water level (1.2-1.4 m / year)were the
monitoring wells Madukoro 2, LIK Kaligawe and PT Aquaria which are the
industrial areas. Exploitation of ground water in industrial areas is
relatively high compared to the other regions.
Author: Khumaedi, Supriyadi,
A. Pradana, S. Imam, M. Yusuf, M. Sarkowi
Journal Code: jpfisikagg150002
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