Studi Persamaan Empiris Percepatan Tanah Berbasis Data Gempa Bumi Di Wilayah Bali Periode 2008-2016

I Putu Arix Putra Wiguna, I Made Yuliara

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 70-12LS and 1130-118BT. Through the regression analysis approach, to obtain the empirical equation of land acceleration in the Bali region  is  𝑙𝑜𝑔10(𝑃𝐺𝐴)  =  (−1,89)  𝑙𝑜𝑔10(𝑅) +  (0,71) 𝑚𝑏 + 1,18. Then several approaches and correlation analysis are performed to see the compatibility of the new empirical equation with the existing one.


Keywords


PGA, empirical equations, regression, correlation

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References


Fukushima, Y., Tanaka, T.. 1990.A new attenuation relation for peak horizontal acceleration of strong earthquake ground motion in Jepang. Bull. Seism. Soc., 80 (4) . 757-783

Lay. T and Wallace. T. C. 1995. Modern Global Seismology. Academic Press.San Diego. 1- 517.

Lin and Wu. 2010. Magnitude Determination Using Strong Ground Motion Attenuation in Earthquake Early Warning. Geophysical Research Letters. Vol.37, L07304.

McVerry, G.H.,Dowrick,D.J.,and Zhao, J.X.. 1995. Attenuation of peak ground acceleration in New Zealand. Pacific Conference on Earthquake Engineering. 287-292

Nugroho H.A.. 2005. Penggunaan Data Signal Accelerograph SMR-4000 Untuk Menentukan Harga Percepatan Tanah Pada Stasiun Geofisika Sanglah Denpasar. BMKG: Bali.

Priyanto, D. K.. 2016. Penentuan Koefisien Dan Konstanta Formula Empiris Percepatan Getaran Tanah Di Daerah Denpasar. Skirpsi. Jurusan Fisika Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Udayana.

USGS. Search Earthquake Catalog diaksespadatanggal 18 Januari 2018, dari https://earthquake.usgs.gov/earthquakes/search/.


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