| dc.description.abstract | The area of this research is Medan, the capital city of North Sumatra province.
Despite this city being in a low seismic hazard potential area, it still has the
potential hazard of earthquake shaking both from the subduction zone of west
Sumatra and the local faults of the Sumatra Fault. In this research, an analysis of
seismic vulnerability was carried out in the city of Medan by considering the local
soil conditions and their response to seismic waves. The purpose of this study is to
provide an overview of the definition and methodology of the geotechnical-seismic
hazard and the various methodologies to make seismic hazard maps. There are
three geophysical methods used in this study, which are Multichannel Seismic
Analysis Surface Wave (MASW), Spatial Autocorrelation (SPAC), and Horizontal-
To-Vertical Spectral Ratios (HVSR). Environment parameters such as population
density, land cover, land slope, and weather class are also considered. The output
of the local soil profile measurement will produce a zoning map of environmental
damage due to earthquakes which can be used to reduce the risk of damage due to
earthquakes. In addition, the empirical formula for determining soil site class using
the Vs30 parameter approach which considers the geomorphological parameters
of Medan City is obtained. The result of this research found that the areas of Medan
Perjuangan, Medan Area, Medan Tembung, and Medan Denai have a high
potential for environmental damage due to earthquakes in Medan City. | en_US |
