Izvorni znanstveni članak
https://doi.org/10.17794/rgn.2024.2.11
ZONATION OF SEISMIC VULNERABILITY LEVELS IN SOUTH BENGKULU REGENCY, INDONESIA FOR DISASTER-BASED REGIONAL PLANNING
Arif Ismul Hadi
; Department of Geophysics, Faculty of Mathematics and Natural Sciences, the University of Bengkulu, Jl. WR Supratman, Bengkulu, 38371, Indonesia
M Farid
; Department of Geophysics, Faculty of Mathematics and Natural Sciences, the University of Bengkulu, Jl. WR Supratman, Bengkulu, 38371, Indonesia
Lindung Zalbuin Mase
; Department of Civil Engineering, Faculty of Engineering, the University of Bengkulu, Jl. WR Supratman, Bengkulu, 38371, Indonesia
R Refrizon
; Department of Geophysics, Faculty of Mathematics and Natural Sciences, the University of Bengkulu, Jl. WR Supratman, Bengkulu, 38371, Indonesia
Shela Basaria Purba
; Department of Geophysics, Faculty of Mathematics and Natural Sciences, the University of Bengkulu, Jl. WR Supratman, Bengkulu, 38371, Indonesia
Darmawan Ikhlas Fadli
; Department of Geophysics, Faculty of Mathematics and Natural Sciences, the University of Bengkulu, Jl. WR Supratman, Bengkulu, 38371, Indonesia
Erlan Sumanjaya
; Department of Geodetic Engineering, Faculty of Engineering, the University of Lampung, Jl. Prof. Dr. Sumantri Brojonegoro No. 1, Bandar Lampung 35141, Indonesia
Sažetak
The accurate prediction and prevention of earthquakes remains challenging. Consequently, the primary approach to mitigate the impact of earthquakes is through disaster risk reduction efforts. One significant strategy involves conducting seismic vulnerability analyses based on disaster scenarios. This study aims to identify and map areas with varying levels of seismic vulnerability, analyzing the factors contributing to vulnerability in the South Bengkulu Regency. Secondary data, including peak ground acceleration (PGA) values, were collected, along with microtremor data obtained through the Horizontal to Vertical Spectral Ratio (HVSR) method. The recorded microtremor data serve as input parameters for PGA, Modified Mercalli Intensity (MMI), Seismic Vulnerability Index (Kg), shear wave velocity (Vs), and the time-averaged shear wave velocity for the first 30 m depths (Vs30) values. The findings reveal that, overall, seismic vulnerability in the South Bengkulu Regency can be categorized as low. However, specific areas, particularly in the southwestern and northeastern zones, exhibit relatively higher levels of vulnerability. The heightened vulnerability in these areas is attributed to elevated PGA values, despite the region's generally high soil density, which acts as a mitigating factor against earthquake threats.
Ključne riječi
earthquake; disaster risk; seismic vulnerability; South Bengkulu; Indonesia
Hrčak ID:
316655
URI
Datum izdavanja:
28.4.2024.
Posjeta: 84 *