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Identifikasi Klasifikasi Jenis Tanah Berdasarkan Nilai Kecepatan Gelombang Geser Vs30 di Daerah Bekasi Rahman, Aditya Setyo; Sutiyono, Sutiyono; Cindiwati, Cindiwati; Alfiandy, Solih
Buletin GAW Bariri (BGB) Vol 5 No 2 (2024): BULETIN GAW BARIRI
Publisher : Stasiun Pemantau Atmosfer Global Lore Lindu Bariri - Palu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31172/bgb.v5i2.121

Abstract

The complex geological and tectonic conditions of Bekasi are interesting to study the soil layers for sustainable development. This research was conducted to analyze soil types in the Bekasi area based on the USGS topographic Vs30 value. The data used were 613 research location points with a distance of approximately 1 km. The results showed that the Vs30 value in the Bekasi area ranged from 125.5479965 m/s to 316.0310059 m/s. Based on SNI 1726:2019, the entire Bekasi area is classified as soft to medium soil types. The majority of all sub-districts in Bekasi have a soft soil type classification, such as in the areas of Muaragembong, Cabangbungin, Babelan, Tarumajaya, Tambelang, Sukatani, Pebayuran, Kedung Waringin, and parts of Tambun. The medium soil type classification is in the southern part of Tambun sub-district, a small part in the southern part of Tambelang and Sukatani sub-districts, and a small part in the north and south of Muaragembong sub – district.
Analisis Potensi Pergerakan Tanah Berdasarkan Ground Shear Strain Untuk Wilayah Bekasi Rahman, Aditya Setyo; Sutiyono, Sutiyono; Wardaningsih, Kuurnia; Istofiyah, Istofiyah; Cindiwati, Cindiwati; Alfiandy, Solih
Buletin GAW Bariri (BGB) Vol 5 No 2 (2024): BULETIN GAW BARIRI
Publisher : Stasiun Pemantau Atmosfer Global Lore Lindu Bariri - Palu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31172/bgb.v5i2.122

Abstract

This study analyzes the Ground Shear Strain (GSS) values and predicts earthquake vibration phenomena in the Bekasi area. The results show that the GSS values are relatively low (0.14 - 0.20), indicating a low level of vulnerability to earthquake shaking. At PGA 0.22 - 0.302 g, it is predicted that only the wave vibration phenomenon will occur (ground vibration is felt, not damaging). Despite the low vulnerability level, it is important to remain vigilant and carry out earthquake mitigation, such as building earthquake-resistant structures and preparing evacuation plans.
SEISMIC VULNERABILITY MICROZONATION USING HORIZONTAL TO VERTICAL SPECTRAL RATIO (HVSR) METHOD IN GARUNGLOR VILLAGE AND ITS SURROUNDINGS WONOSOBO REGENCY Cindiwati, Cindiwati; Putra, Ngurah Made Darma; Adhi, M. Aryono; Wibowo, Nugroho Budi; Ardiyansyah, Adam
Jurnal Neutrino:Jurnal Fisika dan Aplikasinya Vol 18, No 2 (2026): APRIL
Publisher : Universitas Islam Negeri Maulana Malik Ibrahim Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/neu.v18i2.31676

Abstract

This research makes a significant contribution to geotechnics and seismology by providing a database of dominant frequencies and amplifications in Indonesia. The results can be used for spatial planning, earthquake risk mitigation, and understanding variations in soil characteristics and potential seismic amplification across regions to support safer development. Garunglor Village and its surroundings in Sukoharjo District, Wonosobo Regency, have a thick sedimentary layer dominated by alluvial rocks, topsoil, and mud, with low dominant frequencies. At several rock formation measurement points (Tomt, QTlb, and Tptl), the dominant frequency values varied, indicating diverse sediment characteristics. Low seismic wave amplification was found at 5 research points. The seismic vulnerability index was also low at the 8 research points, with T12 having the lowest value, making it the most suitable area for relocation. These results indicate that areas with low amplification and vulnerability indexes in Garunglor Village and its surroundings are relatively safe from potential earthquakes.