Pillar of Physics: Jurnal Berkala Ilmiah Fisika
Vol 14, No 2 (2021)

MAPPING OF THE PEAK GROUND ACCELERATION AND EARTHQUAKE INTENSITY IN PADANG CITY USING EMPIRICAL FORMULATION WITH ACCELEROGRAPH DATA VALIDATION

Adya Mustika Sari (Department of Physics, Universitas Negeri Padang, West Sumatra, Indonesia)
- Syafriani (Department of Physics, Universitas Negeri Padang, West Sumatra, Indonesia)
Fajri Syukur Rahmatullah (Badan Meteorologi Klimatologi dan Geofisika, Jalan Angkasa 1 No.2, Kemayoran, Jakarta Pusat, 10610, Indonesia)



Article Info

Publish Date
13 Dec 2021

Abstract

The city of Padang is an area severely affected by the earthquake that occurred in the Subduction zone. Earthquakes with large magnitudes greatly affect the damage to buildings, one of the factors that can determine the size of the damage is the peak ground acceleration. The peak ground acceleration and earthquake intensity in Padang City can be calculated using an empirical formula. The research area is on the grid with a distance of 0,02°, in order to obtain 196 calculation points. The empirical formula used is Mc. Guire, Si and Midorikawa, Fukushima-Tanaka, and Donovan which were validated with peak ground acceleration data from accelerographs so as to produce an appropriate empirical formula used to calculate the peak ground acceleration value in Padang City. From the validation process it was found that the Fukushima-Tanaka formula is the appropriate formula used to calculate the peak ground acceleration value in the city of Padang with the lowest average error percentage. The results of the calculation show that the highest peak ground acceleration value is in Bungus Teluk Kabung District, which is 69-73 gal, while the lowest peak ground acceleration value is in Koto Tangah District, which is 60-65,5 gal. Based on the peak ground acceleration value, it is known that the intensity of the earthquake in Padang City has a scale of VI MMI.

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Journal Info

Abbrev

fis

Publisher

Subject

Earth & Planetary Sciences Materials Science & Nanotechnology Physics

Description

This journal publishes original articles on the latest issues and trends occurring internationally in: 1 Geophysics, 2 Electronics and Instrumentation, 3 Material Physics, (4) Computational Physics. Other topics are related to physics are most ...