Seismic Vulnerability Mapping to Support Spatial Plans in Lhokseumawe City Area

Abstract

Earthquake loads that work on building structures can be determined by doing calculations ground motion on the surface. The amplitude from ground vibration is correlated with earthquake energy and ground solidity (compaction). The ductile ground will amplify the earthquake energy so that it produces strong vibration to the ground and building on the surface. This study will provide a mapping of areas susceptible to seismic vibrations to produce sustainable Lhokseumawe City spatial management plan policies as supporting literature in City development planning. The results of the study are expected to be disseminated to the community and as input for the Regional Government in planning the development of the city of Lhokseumawe. This research contributed to the development of cross-sectoral science in the assessment of the danger of micro seismic earthquakes. The results of the study were mapping areas that were susceptible to seismic vibration as a basis for spatial planning for the city of Lhokseumawe. The essential linkages in the field of science are on geophysics and architecture. The needs of the study carried out micro seismic data collection in the Lhokseumawe area using micro seismic equipment. The results of this study are the existence of areas that are very susceptible to seismic, namely Ujong Blang and Banda Sakti villages with seismic vulnerability index values (Kg) ranging from 0 cm / s2 -30542.32 cm / s2. The highest value is located at Ujong Blang Village start from point A10, which is 10397.1 cm / s2. This is finally related to the full damage to buildings in Lhokseumawe City during the 2004 earthquake.

Study of the Subsurface Structure Based on Microseismic Data in the Heritage Area of Kota Lama Semarang, Indonesia

“…Amplification can be interpreted as an amplification of waves from the bedrock to the soil surface due to the differences in the shear wave velocity Vs [37]. According to Tanjung [38], the amplification of earthquake waves can occur when a wave propagates to the ground surface where the dominant frequency of the land has the same frequency as the frequency of the incoming earthquake.…”

Analysis Of Liquifaction Potential Using The Method Microzonation in Coastal Zone at North Aceh District

“…The map of the distribution of seismic vulnerability values in Lhokseumawe City is shown in (Figure 2). The results of the analysis of seismic vulnerability index values in previous studies showed that Lhokseumawe City and its surroundings had a seismic vulnerability index value of around 0.41 to 18.3 [7]. The Sumatran fault is distributed along the island of Sumatra from Lampung to Andaman Island with a length of more than 1900 km and is divided into several segments [8].…”

Frequency and Amplification for Assessing site Effects and PVS in the Padang City Railway

“…Susceptibility to vibration is not only felt through earthquakes but also by small vibrations called microtremors (Siska et al, 2020). Microtremor is a low-amplitude vibration (0.1 micron -1 micron for the amplitude displacement 0.001 cm/s -0.01 cm/s for the amplitude velocity) that comes from natural or man-made phenomena, such as wind, ocean waves, or vibrations from vehicles that can describe geological conditions near the surface (Haerudin et al, 2020;Kafadar, 2020;Nelson, 2019;Susilo & Wiyono, 2012).…”