Seismic Vulnerability Evaluation in Western Bandar Lampung's Quarter Formation using the ERT Technique

Rustadi - Rustadi, I Gede Boy Darmawan, Rudi Zefrianto Sinambela

Abstract


Western Bandar Lampung is rapidly evolving into a sought-after residential locale and a scenic mountainous tourist spot. Notably, this region sits atop multiple fault structures, signaling potential seismic threats. This study aims to gauge the susceptibility of superficial layers by analyzing the resistivity properties of the underlying rock. Using the ERT geoelectric method across three lines, following the Wenner-Schlumberger configuration, a length of 140 m was mapped with electrodes spaced at intervals of 5 m. The subsurface materials in the examined area displayed a resistivity range between 4 and 1050 Ohm m, characterized by a blend of weathered constituents and igneous lenses. The dominant presence of extensively weathered material, especially given its thickness, highlights possible seismic dangers, including amplification, liquefaction, and potential landslides. To mitigate the repercussions of seismic hazards stemming from these fault lines, there is an imperative need for stringent adherence to construction guidelines tailored for seismically active regions.Top of Form


Keywords


ERT, Seismic hazard, Bandar Lampung

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References


I. Nurfitriana, A. Wibowo, and R. Rudianto, “Relokasi Gempa Bumi Swarm Di Pesawaran-Lampung, Januari 2021,” J. Geocelebes, no. April, pp. 91–101, 2021, doi: 10.20956/geocelebes.v5i1.13328.

D. H. Natawidjaja et al., “The 2018 Mw7.5 Palu ‘supershear’ earthquake ruptures geological fault’s multisegment separated by large bends: Results from integrating field measurements, LiDAR, swath bathymetry and seismic-reflection data,” Geophys. J. Int., vol. 224, no. 2, pp. 985–1002, 2021, doi: 10.1093/gji/ggaa498.

F. Ramdani, P. Setiani, and D. A. Setiawati, “Analysis of sequence earthquake of Lombok Island, Indonesia,” Prog. Disaster Sci., vol. 4, p. 100046, 2019, doi: 10.1016/j.pdisas.2019.100046.

S. Valkaniotis, A. Ganas, V. Tsironi, and A. Barberopoulou, “A preliminary report on the M7.5 Palu earthquake co-seismic ruptures and landslides using image correlation techniques on optical satellite data,” Eur. Seismol. Cent., no. October, pp. 1–15, 2018, doi: 10.5281/zenodo.1467128.

Syamsuddin, K. Sri Probopuspito, J. Sartohadi, W. Suryanto, and A. Moch Aryono, “Local Seismic Hazard Assessment of the Mataram City, Indonesia Based on Single Station Microtremor Measurement,” Int. Conf. Math. Sci. Educ. 2014, vol. 2014, no. Icmse, 2014.

R. Devi, R. G. Sastry, and N. K. Samadhiya, “Assessment of soil-liquefaction potential based on geoelectrical imaging: A case study,” Geophysics, vol. 82, no. 6, pp. B231–B243, 2017, doi: 10.1190/GEO2017-0016.1.

V. Lapenna and A. Perrone, “Time‐Lapse Electrical Resistivity Tomography (TL‐ERT) for Landslide Monitoring: Recent Advances and Future Directions,” Appl. Sci., vol. 12, no. 3, 2022, doi: 10.3390/app12031425.

W. N. Tsai et al., “Electrical Resistivity Tomography (ERT) Monitoring for Landslides: Case Study in the Lantai Area, Yilan Taiping Mountain, Northeast Taiwan,” Front. Earth Sci., vol. 9, no. October, pp. 1–17, 2021, doi: 10.3389/feart.2021.737271.

T. R. Walter et al., “Soft volcanic sediments compound 2006 Java earthquake disaster,” Eos (Washington. DC)., vol. 88, no. 46, p. 486, 2007, doi: 10.1029/2007EO460002.

I. Kongar, T. Rossetto, and S. Giovinazzi, “Evaluating simplified methods for liquefaction assessment for loss estimation,” Nat. Hazards Earth Syst. Sci., vol. 17, no. 5, pp. 781–800, 2017, doi: 10.5194/nhess-17-781-2017.

Rustadi, I. G. B. Darmawan, N. Haerudin, A. Setiawan, and Suharno, “Groundwater exploration using integrated geophysics method in hard rock terrains in Mount Betung Western Bandar Lampung, Indonesia,” J. Groundw. Sci. Eng., vol. 10, no. 1, pp. 10–18, 2022, doi: 10.19637/j.cnki.2305-7068.2022.01.002.

F. A. Kuranchie, S. K. Shukla, D. Habibi, X. Zhao, and M. Kazi, “Studies on electrical resistivity of Perth sand,” Int. J. Geotech. Eng., vol. 8, no. 4, pp. 449–457, 2014, doi: 10.1179/1939787913Y.0000000033.

L. M. S. Pandey, S. K. Shukla, and D. Habibi, “Electrical resistivity of sandy soil,” Géotechnique Lett., vol. 5, no. 3, pp. 178–185, 2015, doi: 10.1680/jgele.15.00066.

T. Dahlin and B. Zhou, “A numerical comparison of 2D resistivity imaging with 10 electrode arrays,” Geophys. Prospect., vol. 52, no. 5, pp. 379–398, 2004, doi: 10.1111/j.1365-2478.2004.00423.x.

T. Dahlin and B. Zhou, “Reply to Comment on: ‘A numerical comparison of 2D resistivity imaging with 10 electrode arrays’ by T. Dahlin and B. Zhou,” Geophys. Prospect., vol. 53, no. 6, pp. 855–857, 2005, doi: 10.1111/j.1365-2478.2005.00509.x.

T. Dahlin and B. Zhou, “Multiple-gradient array measurements for multichannel 2D resistivity imaging,” Near Surf. Geophys., vol. 4, no. 2, pp. 113–123, 2006, doi: 10.3997/1873-0604.2005037.

M. H. Loke and R. D. Barker, “Rapid least-squares inversion of apparent resistivity pseudosections by a quasi-Newton method,” Geophys. Prospect., vol. 44, no. 1, pp. 131–152, 1996, doi: 10.1111/j.1365-2478.1996.tb00142.x.

S. Idris, D. Darisma, A. H. Pramana, N. Aflah, M. Sayuti, and N. Novita, “Identification of the Aquifer Layer using the Geoelectric Method in Teupin Batee Village, Aceh Besar,” Bull. Comput. Sci. Electr. Eng., vol. 3, no. 1, pp. 40–46, 2022.

Y. Mertzanides, I. Tsakmakis, E. Kargiotis, and G. Sylaios, “Electrical resistivity tomography for spatiotemporal variations of soil moisture in a precision irrigation experiment,” Int. Agrophysics, vol. 34, no. 3, pp. 309–319, 2020, doi: 10.31545/INTAGR/123943.

M. Balasco, V. Lapenna, E. Rizzo, and L. Telesca, “Deep Electrical Resistivity Tomography for Geophysical Investigations: The State of the Art and Future Directions,” Geosci., vol. 12, no. 12, pp. 1–19, 2022, doi: 10.3390/geosciences12120438.

A. Aziz, R. Berndtsson, T. Attia, Y. Hamed, and T. Selim, “Noninvasive Monitoring of Subsurface Soil Conditions to Evaluate the Efficacy of Mole Drain in Heavy Clay Soils,” 2023.




DOI: https://doi.org/10.31284/j.jemt.2023.v4i1.4516

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