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All Journal Journal of Physics: Theories and Applications
Wahyu Humam Muttaqin
Universitas Negeri Semarang
Education Materials Science & Nanotechnology Physics

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Soil Vulnerability Levels based on Microtremor Data using the HVSR method in the Old City Area of Semarang Supriyadi Supriyadi; Wahyu Humam Muttaqin; Khumaedi Khumaedi; Sugiyanto Sugiyanto
Journal of Physics: Theories and Applications Vol 6, No 1 (2022): Journal of Physics: Theories and Applications
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jphystheor-appl.v6i1.59119

Abstract

Kota Lama Semarang with the Dutch colonial era relics is currently used as a cultural heritage tourist spot. As a cultural heritage tourism place, it is necessarily aware of the potential for earthquake disasters due to active faults and volcanic eruptions, as well as the phenomenon of land subsidence caused by geological conditions of young alluvium. One of the geophysical techniques to determine subsurface structure is microtremor measurement. This study aims to determine vulnerability level based on dominant frequency, amplification, and seismic vulnerability index using HVSR analysis in Kota Lama area. Microtremor data measurement contained 11 points with a data retrieval duration of 30 minutes. The results of microtremor data analysis obtained dominant frequency values of 7.03 - 19.36 Hz, amplification of 0.72 – 3.7, and seismic vulnerability index of 0.074 – 0.95. Based on the parameters, it can be concluded that the Kota Lama Semarang area has a low level of vulnerability.
Co-Authors Khumaedi Khumaedi Sugiyanto - Supriyadi Supriyadi