Seismic Hazard Analysis based on Earthquake Vulnerability and Peak Ground Acceleration using Microseismic Method at Universitas Negeri Semarang

International Seminar on Mathematics, Science, and Computer Science Education 2016

数学;自然科学;计算机科学

Sulistiawan, H.^1 ; Supriyadi^1 ; Yulianti, I.^1

Departemen Fisika, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Negeri Semarang, Jalan Taman Siswa, Sekaran, Gunung Pati, Sekaran, Gn. Pati, Kota Semarang

50229, Indonesia^1

关键词: Earthquake intensity;    Harmonic vibration;    Horizontal-to-vertical spectral ratios;    Low-frequency;    Peak ground acceleration;    Seismic hazard analysis;    Seismic hazards;    Three component;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/812/1/012002/pdf
DOI  :  10.1088/1742-6596/812/1/012002

来源: IOP

【 摘 要 】

Microseismic is a harmonic vibration of land that occurs continuously at a low frequency. The characteristics of microseismic represents the characteristics of the soil layer based on the value of its natural frequency. This paper presents the analysis of seismic hazard at Universitas Negeri Semarang using microseismic method. The data acquisition was done at 20 points with distance between points 300 m by using three component's seismometer. The data was processed using Horizontal to Vertical Spectral Ratio (HVSR) method to obtain the natural frequency and amplification value. The value of the natural frequency and amplification used to determine the value of the earthquake vulnerability and peak ground acceleration (PGA). The result shows then the earthquake vulnerability value range from 0.2 to 7.5, while the value of the average peak ground acceleration (PGA) is in the range 10-24 gal. Therefore, the average peak ground acceleration equal to earthquake intensity IV MMI scale.