Local Site Effects Evaluation Using Microtremor Measurements at North Side of Pandan Mountain

Disaster mitigation has been undertaken to reduce the impact of loss or damage caused by the earthquake. For disaster mitigation purpose, it is necessary to conduct a local geological assessment. The horizontal to vertical spectral ratio (HVSR) of microtremor analysis is very popular in the context of seismic micro-zonation. Microtremor method is cheap, data acquisition is easy, and does not cause noise, so suitable for use in residential areas. This research aims to determine the distribution of the natural frequency value, the amplification factor value, and the soil vulnerability index value. This study was conducted geographically between 7°26'17.45" – 7°26'53.16" S and 111°47'14.76" – 111°48'7.06" E. Data processing using HVSR analysis method on Easy HVSR software. The results showed that the natural frequency (fo) values range 0,95 Hz to 8,3 Hz and the amplification factor values range 2,05 to 8,67. From the result data of the natural frequency and the amplification factor, the soil vulnerability index can be calculated. The vulnerability index (Kg) value ranges from 1,09 to 68,33. The northeast side of the study area is indicated as a weak zone where have high potential to damage when the earthquake occurred.

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Ambient Noise Analysis During Nyepi in Denpasar Using Horizontal-to-Vertical Spectral Ratio (HVSR) Method

Jurnal Geofisika ◽

10.36435/jgf.v18i1.424 ◽

2020 ◽

Vol 18 (1) ◽

pp. 23

Author(s):

I Putu Dedy Pratama ◽

Dwi Karyadi Priyanto ◽

Pande Komang Gede Arta Negara

Keyword(s):

Ambient Noise ◽

Seismic Vulnerability ◽

Amplification Factor ◽

Noise Analysis ◽

Spectral Ratio ◽

Vulnerability Index ◽

Dominant Frequency ◽

Before And After ◽

Hvsr Method ◽

Index Value

Nyepi Day is a unique tradition where outdoor human activities stop 24 hours a day. Denpasar City is the region that has the most significant impact on this change because it is the capital province. This study aims to determine the effect of Nyepi on ambient noise in Denpasar on March 25, 2020. We installed a TDS sensor at the Denpasar Geophysics Station for 3x24 hours ie when Nyepi Day, before and after Nyepi as comparative data. The data is processed by the HVSR method to get the value of dominant frequency and amplification factor every hour. Compared to the day before and after Nyepi, the dominant frequency increased during Nyepi and the amplification factor decreased during Nyepi. Seismic vulnerability index value at Nyepi is 24 where there is a decrease of index 3,904 with a day before and after Nyepi. This is showed that Nyepi Day affected ambient noise in Denpasar.

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INDEK KERENTANAN DAN AMPLIFIKASI TANAH AKIBAT GEMPA DI WILAYAH UNIVERSITAS MUHAMMADIYAH JEMBER

Jurnal Media Teknik Sipil ◽

10.22219/jmts.v12i2.2287 ◽

2015 ◽

Vol 12 (2) ◽

Author(s):

Muhtar . ◽

Arief Alihudien

Keyword(s):

Seismic Vulnerability ◽

Multicriteria Analysis ◽

Vulnerability Index ◽

Research Area ◽

Disaster Mitigation ◽

Mitigation Measures ◽

Land Values ◽

Soil Amplification ◽

Residential Areas ◽

The Impact

INDEK KERENTANAN DAN AMPLIFIKASI TANAH AKIBAT GEMPA DI WILAYAH UNIVERSITAS MUHAMMADIYAH JEMBERVulnerability and Soil Amplification Index Due to Earthquake in The University Muhammadiyah JemberMuhtar1 & Arief Alihudien21Jurusan Teknik Sipil Fakultas Teknik – Universitas Muhammadiyah Jember2Jurusan Teknik Sipil Fakultas Teknik – Universitas Muhammadiyah JemberAlamat Korespondensi : Perum Taman Bambu B-01 Jember 68124Email : 1)[email protected] phenomena of earthquakes until now could not be predicted and the exact time it happened. Earthquake danger can not be avoided but its impact can be reduced through assessment activities characteristic earthquakes in a region that will be applied in the selection of methods and policies for disaster risk management. Residential areas adjacent to the source of the earthquake is an earthquake-prone area so, therefore it is necessary strategic steps to protect the public and disaster mitigation measures are an attempt to reduce or minimize the impact of loss or damage that may be caused by the disaster. The study was conducted to provide information to the seismic vulnerability using multicriteria analysis of conditions in the region include University of Muhammadiyah Jember dominant period land values and the value of the amplification factor. The experiment was conducted using subsurface observation with mikrotremoR. From the results of geological studies research area is the basic constituent of igneous rocks such as tuff Argopuro. The results showed that the natural frequency of the soil and soil amplification is at 2,692 and 4,625 Hz. whereas soil vulnerability index value is equal to 7,946.Key Words : seismic, vulnerability, indexAbstrakFenomena alam gempa bumi sampai saat ini belum bisa diprediksi dan waktu yang tepat itu terjadi . Bahaya gempa tidak dapat dihindari namun dampaknya dapat dikurangi melalui kegiatan penilaian gempa bumi karakteristik di daerah yang akan diterapkan dalam pemilihan metode dan kebijakan untuk manajemen risiko bencana . Daerah pemukiman yang berdekatan dengan sumber gempa adalah daerah rawan gempa sehingga , oleh karena itu langkah-langkah strategis yang diperlukan untuk melindungi tindakan publik dan mitigasi bencana merupakan upaya untuk mengurangi atau meminimalkan dampak kerugian atau kerusakan yang mungkin disebabkan oleh bencana. Penelitian ini dilakukan untuk memberikan informasi kepada kerentanan seismik menggunakan analisis multikriteria kondisi di kawasan ini mencakup Universitas Muhammadiyah Jember nilai tanah periode dominan dan nilai faktor amplifikasi . Penelitian dilakukan dengan menggunakan observasi bawah permukaan dengan mikrotremoR. Dari hasil daerah penelitian studi geologi adalah konstituen dasar batuan beku seperti tuf Argopuro . Hasil penelitian menunjukkan bahwa frekuensi alami amplifikasi tanah dan tanah di 2,692 dan 4.625 Hz . sedangkan nilai indeks kerentanan tanah sama dengan 7946 .Kata Kunci : seismik , kerentanan , indeks

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ANALISIS KETEBALAN LAPISAN SEDIMEN DAN INDEKS KERENTANAN SEISMIK KOTA JAMBI BAGIAN TIMUR

Jurnal Geofisika Eksplorasi ◽

10.23960/jge.v6i1.58 ◽

2020 ◽

Vol 6 (1) ◽

pp. 18-30

Author(s):

Arie Satria ◽

Ichy Lucya Resta ◽

Nasri MZ

Keyword(s):

Layer Thickness ◽

Natural Frequency ◽

Seismic Vulnerability ◽

Amplification Factor ◽

Vulnerability Index ◽

Research Area ◽

Ratio Method ◽

Sediment Layer ◽

Alluvial Deposits ◽

High Zone

A Research was carried about analysis of sediment layer thickness and seismic vulnerability index in eastern Jambi City. The purpose of this research was to determine the effect of sediment layer thickness on seismic vulnerability index in eastern Jambi City based on microtremor data. The Acquisition data of microtremor is 25 points spread in research area. Processing data was carried out using the HVSR (Horizontal to Vertical Spectra Ratio) method to obtain the H/V curve. This curve represents the value of the natural frequency (f0) and amplification factor (A0). Based on the results of data processing obtained, the range of natural frequency (f0) value is 1.04 – 3.78 Hz, the range of amplification factor (A0) value is 1.13 - 4.88 times, the range of sediment layer thickness (h) value is 16.46 – 61.45 meters, and the range of seismic vulnerability index (Kg) value is 0.70 - 20.18×10-6 cm2/s. The results showed that the distribution of seismic vulnerability index (Kg) correlated relatively well with sediment layer thickness of the research area. The high zone of seismic vulnerability index (Kg) is relatively associated with alluvial deposits and also the sediment layer thickness of more than 30 meters. The high zone of seismic vulnerability index (Kg) is concentrated in Pasir Panjang, Tanjung Raden to Olak Kemang in Danau Teluk sub-district and Tanjung Sari in Jambi Timur sub-district.

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Analysis of Earthquakes Potential Damages as a Disaster Mitigation Effort

Bencoolen Journal of Science Education and Technology ◽

10.33369/bjset.2.1.20-23 ◽

2021 ◽

Vol 2 (1) ◽

pp. 20-23

Author(s):

Alen Fezi Loveka ◽

Henny Johan ◽

Rendy W. Wardana

Keyword(s):

Shear Strain ◽

Seismic Vulnerability ◽

Vulnerability Index ◽

Disaster Mitigation ◽

Sediment Layer ◽

Residential Areas ◽

Literature Study ◽

Geological Conditions ◽

Potential Damage ◽

Mitigation Effort

Muara Bangkahulu District is one of Bengkulu Province Subdistricts, which is used as a place for higher education service centers, government office centers, and community residential areas. Muara Bangkahulu has the risk of being affected by an earthquake caused by its geological conditions. To avoid the potential damage due to earthquake, the PGA parameters, seismic vulnerability index, ground shear strain, and thickness of sediment layer (h) were analyzed in Muara Bangkahulu District as an effort to mitigate earthquakes. The purpose of this study is to describe the potential damage caused by the earthquake in Muara Bangkahulu District as a disaster mitigation effort. This research was a qualitative descriptive study using the literature study method. The results of the literature study which showed the value of PGA produced between 184.22 gal to 532.92 gal. Distribution of seismic vulnerability index values between 0.56 to 7.95. Distribution of ground shear strain values between 5.14 x10-5 to 7.42 x10-4. The thickness of the sediment layer (h) ranged from 8.13 meters to 61.31 meters. The largest PGA, IKS, GSS and h values are in Kualo Beach which is estimated to have a high level of risk for earthquake disasters with a correlation more than 74%. Thus, it can be concluded that the vicinity of Kualo Beach is the most potential and prone to earthquake damage.

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Collective space on residential as a resilience measure to disaster mitigation earthquakes and liquefaction

IOP Conference Series Materials Science and Engineering ◽

10.1088/1757-899x/1212/1/012003 ◽

2022 ◽

Vol 1212 (1) ◽

pp. 012003

Author(s):

A Mulyati ◽

M Najib ◽

A M Y Astha

Keyword(s):

Spatial Patterns ◽

Residential Buildings ◽

Environmentally Friendly ◽

Public Spaces ◽

Building Construction ◽

Disaster Mitigation ◽

Structural Systems ◽

Residential Areas ◽

The Impact ◽

Environmental Infrastructure

Abstract Disasters have just hit Palu, Sigi, and Donggala, resulting in the fall of so many victims, not only humans but also city and village physicals (residential buildings, facilities, and infrastructure). Several villages hit by the disaster were hamlet 3 Vou, Langaleso village, Dolo sub-district, Jono Oge village, Biromaru sub-district, and Sigi district. The village’s condition was damaged, but most of the buildings and plants were lost to the mud. Settlement neighborhoods that should be full of activity are nowhere to be seen, and people become apathetic. They just accept this situation and are always waiting for help. Huntara, a form of assistance provided by funders, temporarily occupy the settlers’ land because the condition of the land or land needs to be cleared for the rebuilding process. The provision of inclusive spaces is one of the efforts to mitigate disasters in residential areas, namely public spaces that can be used by all settlers. These spaces must be safe and provide comfort, easy to reach, and become part of the residential environment. Village arrangement is one way that can be done to minimize the impact of a disaster. Arrangement of buildings, facilities, and environmental infrastructure are necessary not to create chaos in development. Also, aspects of environmentally friendly residential (village) spatial patterns, structural systems, and building construction that meet the requirements (SNI), the application of local and humane wisdom are no less important to consider in the process of procuring inclusive spaces in settlements, structuring villages, especially after a disaster.

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Microzonation of Probolinggo Fault Using Microtremor as an Effort for Earthquake Disaster Mitigation

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/936/1/012026 ◽

2021 ◽

Vol 936 (1) ◽

pp. 012026

Author(s):

Juan Pandu Gya Nur Rochman ◽

Amien Widodo ◽

Dwa Desa Warnana ◽

Wien Lestari ◽

Mariyanto ◽

...

Keyword(s):

Natural Frequency ◽

Seismic Wave ◽

Seismic Vulnerability ◽

Active Fault ◽

Vulnerability Index ◽

Disaster Mitigation ◽

Geophysical Method ◽

Western Area ◽

Microtremor Measurements ◽

Measurement Area

Abstract Earthquake can be caused by several things, one of which is due to an active fault. To mitigate earthquake disasters that can be caused by the Probolinggo Fault, measurement of the microtremor geophysical method is carried out to analyze seismic vulnerability. In this study, the microtremor measurements were carried out on 30 measurement points. The data obtained from measurements are then processed using EasyHVSR software to obtain natural frequency (f0) and natural amplification (A0) values. This value is then used to create a microtremor microzonation map, which is seismic vulnerability index, based on natural frequency and amplification . it founded that low natural frequency mostly founded on eastern of measurement area, caused by thick sedimentary from Lamongan volcanic. High amplification mostly founded from middle to western area, and high seismic vulnerability index founded on western of measurement area, include Maron and Krucil Sub-district. It means seismic wave can very destructive on those area.

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PERSEPSI MASYARAKAT TEPIAN SUNGAI TERHADAP PEMANFAATAN RUANG SIRKULASI DAN RUANG TERBUKA SEBAGAI RESPON MITIGASI BENCANA BERBASIS BENCANA AIR DI SINTANG

LANGKAU BETANG JURNAL ARSITEKTUR ◽

10.26418/lantang.v5i2.29889 ◽

2018 ◽

Vol 5 (2) ◽

pp. 97

Author(s):

Bontor Jumaylinda Br. Gultom ◽

Tri Wibowo Caesariadi

Keyword(s):

Urban Space ◽

Public Perception ◽

Open Space ◽

Human Life ◽

Water Levels ◽

Disaster Mitigation ◽

Residential Areas ◽

Specific Detail ◽

The Impact ◽

Water Disaster

Sintang merupakan salah satu kota di Kalimantan Barat yang berada di pertemuan dua sungai, yaitu sungai Kapuas dan Sungai Melawi. Kelurahan Kapuas Kiri Hilir, Kelurahan Menyumbung Tengah dan Kelurahan Ulak Jaya merupakan kawasan permukiman padat yang sudah ada sejak lama di Sintang, dekat dengan pusat historis Kota Sintang yaitu Keraton Sintang dan tetap eksis sampai sekarang. Sedangkan kondisi dunia yang sedang mengalami pemanasan global mengakibatkan kawasan-kawasan yang berhubungan langsung dengan air rentan mengalami kenaikan permukaan air sungai (pasang air). Mengingat mahalnya harga nyawa manusia maka diperlukan penelitian pada pemanfaatan ruang sirkulasi dan ruang terbuka untuk mitigasi bencana berbasis bencana air ketiga kelurahan tersebut.Penelitian ini bertujuan mengidentifikasi dan mengilustrasikan model mitigasi bencana berbasis bencana air (hydrometeorological disaster), dilihat dari persepsi masyarakat dan pemanfaatan ruang sirkulasi dan ruang terbuka.Penelitian ini dilakukan menggunakan pola pikir induktif yaitu berpikir berlandaskan pandangan khusus ke umum. Teknik pengumpulan data, pengolahan data, dan analisis dilakukan dengan membandingkan metode kuantitatif dan kualitatif. Kuantitatif digunakan untuk mengukur persepsi masyarakat akan bencana berbasis bencana air. Sedangkan metode kualitatif mendeskripsikan dalam bentuk ilustrasi pemanfaatan ruang terbuka dan sirkulasi.Hasil penelitian persepsi masyarakat disimpulkan bahwa bencana yang sering terjadi adalah bencana kenaikan permukaan air (banjir/pasang). Masyarakat juga berpendapat walaupun mereka menghadapi kemarau, namun dampaknya tidak terlalu terasa karena mereka sudah mengantisipasi dengan menyediakan tempat penampungan air. Dan berdasarkan kondisi fisik lapangan, model mitigasi bencana berupa jalur sirkulasi berupa titian (papan kayu).Kata-kata Kunci: mitigasi, bencana, persepsi, ruang, sirkulasiTHE PERCEPTION OF RIVERBANK COMMUNITY ON UTILIZATION OF CIRCULATION AND OPEN SPACE AS DISASTER MITIGATION RESPONSE BASED ON WATER DISASTER IN SINTANGSintang is one of the cities in West Kalimantan which lies in the confluence of two rivers, i.e. Kapuas River and Melawi River. Kapuas Kiri Hilir Village, Menyumbung Tengah Village and Ulak Jaya Village have been densely populated residential areas in Sintang for a long time, located close to the historical centre of Sintang i.e. Sintang Palace and still exists today. While the condition of the world that is experiencing global warming has resulted in areas that are directly related to water susceptible to rising water levels (tidal water). Given the value of human life, research is needed on the use of the circulation space and open space for disaster mitigation based on water in the three villages.This study aims to identify and illustrate a model of water disaster-based mitigation (hydrometeorological disaster), seen from the public perception and utilization of circulation and open space.This research was conducted using an inductive mindset, which is thinking based from specific detail to general truth. Data collection techniques, data processing, and analysis were carried out by comparing quantitative and qualitative data. Quantitative was used to measure people's perceptions of disaster based on water-disaster. Whereas qualitative method described the illustration of open space and circulation.The results of the research on community perceptions concluded that disaster that often occurs is disaster of rising water levels (flood / tide). The community also believes that even though they face droughts, the impact is not too pronounced because they have anticipated it by providing water reservoirs. And based on the physical field condition, the suitable disaster mitigation model is circulation paths in the form of wooden board.Keywords: mitigation, disaster, percention, space, circulation REFERENCESHaifani, Akhmad Muktaf. 2008. Manajemen Resiko Bencana Gempa Bumi (Studi Kasus Gempabumi Yogyakarta 27 Mei 2006). Seminar Nasional IV Sdm Teknologi Nuklir Yogyakarta, 25-26 Agustus 2008 ISSN 1978-0176Haryanti, Dini Tri. 2008. Kajian Pola Pemanfaatan Ruang Terbuka Publik Kawasan Bundaran Simpang Lima Semarang. Semarang: Universitas Diponegoro, TesisJokowinarno, Dwi. 2011. Mitigasi Bencana Tsunami Di Wilayah Pesisir Lampung. Lampung: Jurnal Rekayasa Vol. 15 No. 1, April 2011Krier, Rob. (1979). Urban Space. New York: Rizzoli.Nugroho, Erik Kado, Endang Pudjihartati, Bistok Hasiholan Simanjuntak. 2014. Redesain Sistem Sirkulasi, Parkir Dan Rambu-Rambu Lanskap Kampus 1 Universitas Kristen Satya Wacana. AGRIC Vol.26, No. 1 & 2, Juli - Desember 2014: 61 - 74Nurdiyana. 2017. Persepsi Mahasiswa Ilmu Komunikasi Terhadap Tayangan Stand Up Comedy KompasTV Sebagai Program Komedi Populer Di Indonesia. Makassar: Universitas HasanuddinRachmatullah, Michael, Octavianus H.A. Rogi, Sonny Tilaar. 2016. Evaluasi Kebijakan Pola Ruang Dan Struktur Ruang Berbasis Mitigasi Bencana Banjir (Studi Kasus : Kota Palu). Manado: Universitas Sam RatulangiRahmat, Jalalludin. 2004. Psikologi Komunikasi. Bandung, Remaja RosdakaryaSubiyantoro, I. (2010). Selayang Pandang tentang Bencana. Jurnal Dialog Penanggulangan Bencana, 1, 43-46Walgito, Bimo. 2004. Pengantar Psikologi Umum. Yogyakarta: Andi OfsetWardhana, W. A. 2010. Dampak Pemanasan Global. Yogyakarta: Penerbit AndiWikantiyoso, Respati. 2010. Mitigasi Bencana Di Perkotaan; Adaptasi Atau Antisipasi Perencanaan Dan Perancangan Kota ? (Potensi Kearifan Lokal Dalam Perencanaan Dan Perancangan Kota Untuk Upaya Mitigasi Bencana). Malang: Volume:II, Nomor: 1. Halaman: 18 - 29

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Seismic microzonation based on microseismic data and damage distribution of 2006 Yogyakarta Earthquake

E3S Web of Conferences ◽

10.1051/e3sconf/20197603008 ◽

2019 ◽

Vol 76 ◽

pp. 03008

Author(s):

Radhitya Perdhana ◽

Budi Eka Nurcahya

Keyword(s):

Amplification Factor ◽

Spectral Ratio ◽

Geological Condition ◽

Predominant Frequency ◽

Damage Distribution ◽

Local Site Effects ◽

Central Java ◽

Local Site ◽

Hvsr Technique

The 2006 Yogyakarta earthquake caused an extensive damage to various areas of Yogyakarta regions. The damage distribution indicates the role of local site effects during the earthquake as the damage extended from Bantul Regency in Yogyakarta Province to Klaten Regency in Central Java. Microzonation based on the damage distribution is then carried out using Horizontal-to-Vertical Spectral Ratio (HVSR) technique. From this technique, amplification factor and predominant frequency can be obtained and then spatially mapped. Inversion can also be conducted to the HVSR curves to infer the geological condition of the study area.

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Development of interactive diagnostic tools and metrics for the socio-economic consequences of floods

10.5194/egusphere-egu21-8060 ◽

2021 ◽

Author(s):

Annie-Claude Parent ◽

Frédéric Fournier ◽

François Anctil ◽

Brian Morse ◽

Jean-Philippe Baril-Boyer ◽

...

Keyword(s):

Maximum Flow ◽

Large Data ◽

Heterogeneous Data ◽

Economic Consequences ◽

Disaster Mitigation ◽

Diagnostic Tools ◽

Data Sets ◽

Residential Areas ◽

Level Data ◽

The Impact

Spring floods have generated colossal damages to residential areas in the Province of Quebec, Canada, in 2017 and 2019. Government authorities need accurate modelling of the impact of theoretical floods in order to prioritize pre-disaster mitigation projects to reduce vulnerability. They also need accurate modelling of forecasted floods in order to direct emergency responses.&#160;We present a governmental-academic collaboration that aims at modelling flood impact for both theoretical and forecasted flooding events over all populated river reaches of meridional Quebec. The project, funded by the minist&#232;re de la S&#233;curit&#233; publique du Qu&#233;bec (Quebec ministry in charge of public security), consists in developing a diagnostic tool and methods to assess the risk and impacts of flooding. Tools under development are intended to be used primarily by policy makers.&#160;The project relies on water level data based on the hydrological regimes of nearly 25,000 km of rivers, on high-precision digital terrain models, and on a detailed database of building footprints and characterizations. It also relies on 24h and 48h forecasts of maximum flow for the subject rivers. The developed tools integrate large data sets and heterogeneous data sources and produce insightful metrics on the physical extent and costs of floods and on their impact on the population. The software also provides precise information about each building affected by rising water, including an estimated cost of the damages and impact on inhabitants.&#160;&#160;

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THE ANALYSIS OF LIQUEFACTION PHENOMENON OF THE FLEXIBLE PAVEMENT USING SEISMIC MONITORING EQUIPMENT

IIUM Engineering Journal ◽

10.31436/iiumej.v20i1.1031 ◽

2019 ◽

Vol 20 (1) ◽

pp. 70-78

Author(s):

RINI KUSUMAWARDANI ◽

Untoro Nugroho ◽

Sri Handayani ◽

Mareta Aspirilia Fananda

Keyword(s):

Natural Frequency ◽

Spectral Ratio ◽

Vulnerability Index ◽

Seismic Monitoring ◽

Laboratory Research ◽

Monitoring Equipment ◽

The Road ◽

Lower Natural Frequency ◽

On The Road ◽

Monitoring Devices

ABSTRACT: Liquefaction phenomenon is generally caused by high dynamic vibrations in a very fast duration. This article investigated the behavior of dynamic vibrations caused by vehicles on the road. This study employed the HVSR (Horizontal Vertical Spectral Ratio) with an accelerometer. The result of dynamic vibration generated by the passing vehicle or the micro tremor / micro seismic vibration was recorded by seismic monitoring devices. This seismic monitoring equipment converted vibration into natural frequency (f0) and amplification (A0) using Geopsy software. The result of HVSR (Horizontal Vertical Spectral Ratio) was the soil vulnerability index (Kg). The results of this study indicated that the three parameters above were then analyzed with the assumption that if the amplification value (A0) was higher and associated with a lower natural frequency value (Æ’0) with a high vulnerability index (Kg), then the area had the potential liquefaction, with laboratory research results in the form of granular gradation testing as the supporting data. Therefore, the results of the analysis and the laboratory can concluded that the three research locations have the potential liquefaction. ABSTRAK: Fenomena pececairan umumnya disebabkan oleh adanya getaran dinamik tinggi dalam tempoh yang sangat cepat. Artikel ini mengkaji fenomena getaran dinamik yang disebabkan oleh kenderaan di jalan raya. Kajian ini menggunakan HVSR (Nisbah Spektral Menegak Mendatar) dengan pecutan. Hasil getaran dinamik yang dihasilkan oleh kenderaan yang melalui atau gegaran mikro / mikro getaran seismik dicatatkan oleh alat pemantauan seismik. Peralatan pemantauan seismik ini mengubah getaran ke frekuensi semula jadi (f0) dan amplifikasi (A0) menggunakan perisian Geopsy. Hasil HVSR (Nisbah Spektral Vertikal Mendatar) adalah indeks kelemahan tanah (Kg). Keputusan kajian ini menunjukkan bahawa ketiga-tiga parameter di atas kemudian dianalisis dengan anggapan bahawa jika nilai amplifikasi (A0) lebih tinggi dan dikaitkan dengan nilai kekerapan semulajadi yang lebih rendah (Æ’0) dengan indeks kelemahan tinggi (Kg), maka kawasan mempunyai potensi pencairan, dengan hasil penyelidikan makmal berupa pengujian gradasi granular sebagai data pendukung. Oleh itu, hasil analisis dan makmal dapat menyimpulkan bahawa tiga lokasi penyelidikan mempunyai potensi adanya pececairan.

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