Identification of slip surface based on geoelectrical dipole-dipole in the landslides hazardous area of Gedangsari District, Gunungkidul Regency, Province of Daerah Istimewa Yogyakarta, Indonesia

Yatini, Yatini and Suyanto, Suyanto (2018) Identification of slip surface based on geoelectrical dipole-dipole in the landslides hazardous area of Gedangsari District, Gunungkidul Regency, Province of Daerah Istimewa Yogyakarta, Indonesia. In: IOP Conference Series: Earth and Environmental Science, Desember 2018, Yogyakarta.

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Abstract

Landslides problems that often occurred at Mertelu Village, Gedangsari District,
Gunungkidul Regency, DIY are caused by several factors. In addition to the fact that the village
is located in a fairly steep area, there is also a slip surface from the existing soil type. The
purpose of this research is to gather the slip surface information based on resistivity method
using Dipole-dipole configuration. The initial stage is done by taking 4 representative lines,
which each line is 300 meters long, spaced 20 meters and using n = 1-8. The results showed that
rock resistivity varied from 2 to 200 Ohm-m also divided into very low, low, medium and high
resistivity. The interpretations are very low resistivity (2-8 Ohm-m) as claystones and or
siltstones, low resistivity (8-20 Ohm-m) as muddy sandstones, medium resistivity (20-50 Ohmm)
as
sandstones
and
high
resistivity
(> 50
Ohm
–m)
as
massive
sandstones.
In
general,
the

bedding
begins
with a
very
low
resistivity
at
the
top
and
high
resistivity
at
the
bottom.
The
slip

surface
is
marked
as
a
very
low
resistivity
which
lays
above
a
higher
resistivity.
The
landslide

analysis
indicates
that
the
Gedangsari
area
is
dominated
by
rotational
landslide.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: landslide, slip surface, resistivity, dipole-dipole configuration
Subjek: Q Science > Q Science (General)
Divisions: x. Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User: Dr Y Yatini
Date Deposited: 17 Oct 2019 04:10
Last Modified: 21 Oct 2019 04:19
URI: http://eprints.upnyk.ac.id/id/eprint/21588

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