PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL)
Vol 5 (2016): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2016

IDENTIFIKASI SIFAT MAGNETIK TANAH DI DAERAH TANAH LONGSOR

Rahma Andini Pratiwi (Departemen Geofisika FMIPA Unpad, Jl. Raya Bandung-Sumedang KM 21 Sumedang 45363)
Agum Gumelar Prakoso (Departemen Geofisika FMIPA Unpad, Jl. Raya Bandung-Sumedang KM 21 Sumedang 45363)
Riski Darmasetiawan (Departemen Geofisika FMIPA Unpad, Jl. Raya Bandung-Sumedang KM 21 Sumedang 45363)
Eleonora Agustine (Departemen Geofisika FMIPA Unpad, Jl. Raya Bandung-Sumedang KM 21 Sumedang 45363)
Kartika Hajar Kirana (Departemen Geofisika FMIPA Unpad, Jl. Raya Bandung-Sumedang KM 21 Sumedang 45363)
Dini Fitriani (Departemen Geofisika FMIPA Unpad, Jl. Raya Bandung-Sumedang KM 21 Sumedang 45363)



Article Info

Publish Date
30 Oct 2016

Abstract

A research has been conducted to identified magnetic properties of soil in landslides area. Soil samples had taken in two areas, area A located in landslides area and area B has not experienced landslides. We have identify magnetic parameter based on magnetic susceptibility measurements in 0,46 kHz and 4,6 kHz . The measurement results showed that the value of area A is 345.2 × 10-8 m3/kg to 571 × 10-8 m3/kg and the value of in area B is 332.3 × 10-8 m3/kg to 668.1 × 10-8 m3/kg. The range of magnetic susceptibility values show that the magnetic minerals contained in the samples are classified as ferrimagnetic minerals. Relative difference between and is known as frequency dependent susceptibility . Calculated value of in area A is about 2.65% to 3.33% and area B is 0.97% to 2.58%. The value of indicates that area A contained more much superparamagnetic grains than area B. Soils that contain much superparamagnetic grains will be finer and easy to absorb water. The addition of soil mass by water could cause the soil more susceptible to landslide if located in steep slope. Keywords: Landslides, magnetic susceptibility, superparamagnetic grain.

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Journal Info

Abbrev

prosidingsnf

Publisher

Subject

Electrical & Electronics Engineering Energy Physics Other

Description

Focus and Scope: Physics education Physics Instrumentation and Computation Material Physics Medical Physics and Biophysics Physics of Earth and Space Physics Theory, Particle, and Nuclear Environmental Physics and Renewable ...