Sanjaya, Andjani Najaa (2025) Analisis Kerentanan Tanah Menggunakan Metode Horizontal to Vertical Spectral Ratio (HVSR) di Wilayah Institut Teknologi Sepuluh Nopember Surabaya. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Berdasarkan letak geografis, Surabaya merupakan wilayah yang berada di zona aktif secara tektonik dan berdekatan dengan sistem sesar Kendeng, sehingga rentan terhadap guncangan akibat gempa bumi. Penelitian ini dilakukan di wilayah Institut Teknologi Sepuluh Nopember Surabaya yang didominasi oleh endapan alluvial dan tanah lunak yang berpotensi memperkuat gelombang seismik, dengan melakukan pengukuran mikrotremor pada 28 titik menggunakan metode HVSR (Horizontal to Vertical Spectral Ratio) dan beberapa komponen horizontal untuk menganalisis pengaruh arah penjalaran gelombang terhadap bentuk kurva HVSR. Dari hasil analisis, diperoleh nilai parameter frekuensi natural (f0) sebesar 1.26 Hz hingga 3.67 Hz, faktor amplifikasi (A0) sebesar 4.11 hingga 8.36, periode dominan (Tdom) sebesar 0.27 sekon sampai 0.79 sekon, dan indeks kerentanan tanah (Kg) sebesar 5.17 s²/cm hingga 55.42 s²/cm. Hasil menunjukkan bahwa sudut 0° pada komponen horizontal directional energy menghasilkan kurva HVSR yang paling tajam dan stabil dibandingkan dengan komponen horizontal lainnya. Berdasarkan peta mikrozonasi, wilayah yang tergolong rawan terhadap guncangan kuat akibat gempabumi meliputi wilyah Teknik Lingkungan, Graha ITS, Manajemen Bisnis, STP, Robotika, Desain Interior, Kedokteran, BRIN Belakang, Teknik Transportasi Kelautan, Studi Pembangunan, Stadion ITS, Perumdos blok T Depan dan Belakang, Perumdos blok J, Perumdos blok N, Riset Mobil Listrik, dan Gerbang Belakang. Sementara itu, wilayah yang relatif lebih stabil terhadap guncangan adalah BRIN Depan, Kantin Pusat, Reidi, Teknik Mesin, Teknik Material dan Metalurgi, Lapangan Futsal PLN, Asrama Depan dan Belakang, Teknik Sipil Depan dan Belakang, serta Perumdos blok V.
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Based on its geographical location, Surabaya is an area located in a tectonically active zone and adjacent to the Kendeng fault system, making it vulnerable to earthquake shocks. This research was conducted in the area of Institut Teknologi Sepuluh Nopember Surabaya which is dominated by alluvial deposits and soft soils that have the potential to amplify seismic waves, by conducting microtremor measurements at 28 points using the HVSR (Horizontal to Vertical Spectral Ratio) method and several horizontal components to analyze the influence of wave propagation direction on the shape of the HVSR curve. From the analysis, the parameter values of natural frequency (f0) of 1.26 Hz to 3.67 Hz, amplification factor (A0) of 4.11 to 8.36, dominant period (Tdom) of 0.27 sec to 0.79 sec, and soil susceptibility index (Kg) of 5.17 s²/cm to 55.42 s²/cm were obtained. The results show that the 0° angle in the horizontal directional energy component produces the sharpest and most stable HVSR curve compared to the other horizontal components. Based on the microzoning map, areas that are classified as prone to strong shaking due to earthquakes include the Environmental Engineering area, Graha ITS, Business Management, STP, Robotics, Interior Design, Medicine, Rear BRIN, Marine Transportation Engineering, Development Studies, ITS Stadium, Perumdos block T Front and Rear, Perumdos block J, Perumdos block N, Electric Car Research, and Rear Gate. Meanwhile, areas that are relatively more stable against shocks are BRIN Front, Central Canteen, Reidi, Mechanical Engineering, Materials and Metallurgy Engineering, PLN Futsal Field, Dormitory Front and Back, Civil Engineering Front and Back, and Perumdos block V.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Azimuthal, HVSR, Indeks Kerentanan Tanah, Mikrotremor, Mikrozonasi, Azimuthal, HVSR, Soil Susceptibility Index, Microtremor, Microzonation |
| Subjects: | Q Science > QE Geology > QE538.5 Seismic tomography; Seismic waves. Elastic waves Q Science > QE Geology > QE539.2 Seismic traveltime inversion Q Science > QE Geology > QE601 Geology, Structural |
| Divisions: | Faculty of Science and Data Analytics (SCIENTICS) > Physics > 45201-(S1) Undergraduate Thesis |
| Depositing User: | Andjani Najaa Sanjaya |
| Date Deposited: | 28 Jul 2025 03:43 |
| Last Modified: | 28 Jul 2025 03:43 |
| URI: | http://repository.its.ac.id/id/eprint/122045 |
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