Analisis Vs30 Lokasi Kecamatan Syiah Kuala Dalam Upaya Mitigasi Bencana Gempa Bumi Kota Banda Aceh

Abstract

Banda Aceh is located at the geological segment vulnerable to earthquake. However as the capital of the Aceh province should be a serious concern in order to minimize the impact of the devastating earthquake. Therefore, the assessment of soil layer amplification using shear wave velocity values is done as one of the disaster mitigation efforts. Shallow seismic testing to get the parameters of shear wave by using MASW method. The results showed that Syiah Kuala subdistrict is divided into two zones of soil layers. The results of analysis Vs30 showed that Syiah Kuala subdistrict is divided into medium density and soft layers of soil characteristics.

Shallow crustal earthquake models, damage, and loss predictions in Banda Aceh, Indonesia

“…The site coefficient for Banda Aceh city was determined using shear-wave velocity travel-time averaged over a depth of 30-m (Vs30) data from Muzli et al (2014) and Jamaluddin et al (2018) in order to calculate the amplification factor. Muzli et al (2014) and Jamaluddin et al (2018) determined Vs30 using the MASW (Multichannel Analysis of Surface Wave) method from 53 locations, which were placed approximately 1 km apart. The result showed that the Banda Aceh area has stiff and soft soil layers.…”

“…3 was taken from the global Vs30 model developed by Allen and Wald (2009), yet for small scale (see Fig. 7a), the Vs30 data were derived from Muzli et al (2014) and Jamaluddin et al (2018). These data then were applied in GIS analysis to produce the earthquake scenario ground motions shown in Fig.…”

“…The USGS value of Vs30 used to calculate the site coefficient is very suitable for regional earthquake models, but is less applicable to local earthquake models. To determine the details of spatial variation of the earthquake scenario intensities in Banda Aceh itself, this study used values of Vs30 taken form the MASW studies of Muzli et al (2014) and Jamaluddin et al (2018).…”

“…Detailed Vs30 studies in Banda Aceh city were conducted by Muzli et al (2014) and Jamaluddin et al (2018), and these data were used here to calculate the site coefficient and amplification factors. The locations of the Vs30 data and the interpolated results are shown in Fig.…”