Abstract
Mataram City is an area which is composed by thick deposits of volcanic material and has high seismic activity. When an earthquake occurs, seismic waves which is trapped in thick layers of sediment can cause severe damage to buildings. The mapping of seismic vulnerability in the Mataram City is needed to be carried out considering that Mataram City is the capital of West Nusa Tenggara province where there are many high buildings and high levels of human activity. The method that can be used to determine the vulnerability of the soil in an area is by using the HVSR (Horizontal to Vertical Spectral Ratio) method. Therefore, the dominant period values and seismic vulnerability index can be obtained in the research area. In addition, the shear strain values which was measured in the research area indicate the strength of the strain level in the constituent materials during the earthquake. The strength of the shear strain is obtained by multiplying the seismic vulnerability index (Kg) based on microtremors with the PGA value in the bedrock. Based on the results of the data processing, the dominant period (T0) value in the Mataram City is between 0.07-1.65 s, the seismic vulnerability value (Kg) ranges between 0.12 – 137.03 and the Ground Shear Strain (GSS) range is between 1.3 x 10-5 – 1.5 x 10 -3. Based on the research results, it can be concluded that Sekarbela District, Mataram District, and Labuapi District have high seismic vulnerability and also have damage impacts in the form of land shifting and subsidence.
Concepts :
SDGs
Citations by Year
| Year | Count |
|---|---|
| 2024 | 1 |