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Kappa Journal
Published by Universitas Hamzanwadi
ISSN : -     EISSN : 25492950     DOI : -
Core Subject : Science, Education,
Astronomy Physics Other
Kappa Journal (e-ISSN 2549-2950) mempublikasikan artikel hasil-hasil penelitian fisika, inovasi pembelajaran fisika, dan pemikiran-pemikiran kritis tentang fisika maupun pendidikan fisika. Kappa Journal diterbitkan oleh Universitas Hamzanwadi dua kali setahun yakni setiap bulan Juni dan Desember.
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Articles 2 Documents
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Search results for , issue "Vol 3, No 2 (2019): KAPPA JOURNAL" : 2 Documents clear
DERIVATIF RADIAL ANOMALI GRAVITASI UNTUK IDENTIFIKASI ZONA SESAR Ronodirdjo, Muhammad Zuhdi; Doyan, Aris; Sutrio, Sutrio; Wahyudi, Wahyudi; Makhrus, Muh
Kappa Journal Vol 3, No 2 (2019): KAPPA JOURNAL
Publisher : Universitas Hamzanwadi

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Abstract

Fault is a displacement of the land with a certain direction and shift that triggers an earthquake. The existence of faults that are not visible on the surface can be identified by measuring the gravity anomaly above the earth's surface around the fault zone. This study was conducted with the aim of testing the effectiveness of radial derivatives for identification of fault zones, i.e the presence and positions of faults. Radial derivative is a horizontal derivative of the earth's gravity anomaly value with the radial direction away from a certain point that is considered as the radial center. Gravity anomaly data used in this study is synthetic data from computer calculations using the principle of forward modeling from a fault model. This model is in the form of a displacement of the rocks making up the soil at a depth of 100 m with a vertical shift direction of 4 m with an area of the fault zone 600 m x 600 m or 360,000 m2. This synthetic gravity data is then performed a radial derivative treatment. The results of this study show that radial derivatives are able to identify the presence and position of the fault.
STUDI PERSAMAAN EMPIRIS PERCEPATAN TANAH BERBASIS DATA GEMPA BUMI DI WILAYAH BALI PERIODE 2008-2016 Putra Wiguna, I Putu Arix; Yuliara, I Made
Kappa Journal Vol 3, No 2 (2019): KAPPA JOURNAL
Publisher : Universitas Hamzanwadi

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Abstract

The earthquake was the most common natural disaster in Indonesia, one ofwhich was the Province of Bali. The southern part of Bali is a meeting area of two earth plates (subduction zones) between the Eurasian and Indo-Australian plates and in the northern region there is a back arc thrust fracture which results in earthquake frequencies in the Bali area. One of the parameters that is very instrumental in determining the level of damage to land and buildings that occur on the surface of the earth due to earthquake shocks is the acceleration  of the soil. A research has been conducted which aims to find out the empirical equation of land acceleration for Bali in the 2008-2016 period, namely by determining the empirical equation of land acceleration (PGA) conducted  using magnitude parameters, hypocenter distance and PGA (observation) values in 2008-2016 with coordinates 70-120 LS and 1130-1180 BT. Through the regression analysis approach, to obtain the empirical equation of land acceleration in the Bali region  is  ???10(???)  =  (?1,89)  ???10(?) +  (0,71) ?? + 1,18. Then several approaches and correlation analysis are performed to see the compatibility of the new empirical equation with the existing one.

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