scholarly journals ANALISIS PERCEPATAN TANAH MAKSIMUM DENGAN MENGGUNAKAN RUMUSAN ESTEVA DAN DONOVAN (Studi Kasus Pada Semenanjung Utara Pulau Sulawesi)

2015 ◽  
Vol 17 (1) ◽  
pp. 99
Author(s):  
Cloudya Gabriella Kapojos ◽  
Gerald Tamuntuan ◽  
Guntur Pasau
Keyword(s):  
Empirical Formula ◽  
Similar Pattern ◽  
Peak Ground Acceleration ◽  
Method Comparison ◽  
Ground Acceleration ◽  
Tectonic Earthquake ◽  
Earthquake Data ◽  
Earthquake Impact

ANALISIS PERCEPATAN TANAH MAKSIMUM DENGAN MENGGUNAKAN RUMUSAN ESTEVA DAN DONOVAN (Studi Kasus Pada Semenanjung Utara Pulau Sulawesi) ABSTRAK Telah dilakukan analisis percepatan tanah maksimum di semenanjung utara Pulau Sulawesi dengan menggunakan rumusan Esteva dan rumusan Donovan. Data yang digunakan adalah data gempa bumi tektonik yang terjadi di sekitar semenanjung utara Pulau Sulawesi pada periode tahun 2008 – 2014. Hasil analisis menunjukkan bahwa perubahan nilai percepatan tanah dari rumusan Esteva dan rumusan Donovan memiliki pola perubahan yang sama terhadap jarak. Nilai percepatan tanah menurut rumusan Donovan lebih tinggi dibandingkan dari rumusan Esteva. Perbandingan dengan data akselerograf mengindikasikan bahwa rumusan Esteva lebih cocok digunakan dalam mengestimasi percepatan tanah maksimum di semenanjung utara Pulau Sulawesi. Hasil pemetaan sebaran percepatan tanah maksimum menunjukkan bahwa wilayah Kabupaten Minahasa Utara berada pada zona dengan resiko yang lebih tinggi dibandingkan wilayah lainnya di semenanjung utara Pulau Sulawesi. Kata Kunci :Percepatan tanah maksimum, gempa bumi, semenanjung utara Pulau Sulawesi ANALYSIS OF PEAK GROUND ACCELERATION USING ESTEVA AND DONOVAN FORMULATIONS (A Case Study On The Northern Part of Sulawesi) ABSTRACT Peak ground acceleration on the northern part of Sulawesi Island has been analysis by using Esteva and Donovan formulations. We use tectonic earthquake data that occurred around the northern part of Sulawesi Island during period of 2008 till 2014. The results showed that both Esteva and Donovan formulations have the similar pattern on changes of peak ground acceleration to the distance. Value of peak ground acceleration calculated with Donovan method higher than Esteva method. Comparison between empirical formula results and accelerograf data show that Esteva formulation more suitable for use in estimating the peak ground acceleration in the northern part of Sulawesi Island. Distribution of peak ground acceleration indicate that the earthquake impact on North Minahasa Regency is higher than other regions in northern part of Sulawesi island. Keynotes: Peak Ground Acceleration, Earthquake, Northern Part of Sulawesi Island

scholarly journals PENENTUAN ZONASI GEMPA BERDASARKAN POLA PENYEBARAN GEMPA BUMI DI DAERAH PROVINSI JAWA BARAT

Wahana Fisika ◽  
2018 ◽  
Vol 3 (1) ◽  
pp. 62
Author(s):  
Siti Azizah Sutisna ◽  
Mimin Iryanti ◽  
Judhistira Aria Utama
Keyword(s):  
Seismic Data ◽  
Peak Ground Acceleration ◽  
Earthquake Intensity ◽  
West Java ◽  
Ground Acceleration ◽  
Tectonic Earthquake ◽  
Calculation Process ◽  
Class 1 ◽  
Year 2000 ◽  
Earthquake Data

Provinsi Jawa Barat dibatasi oleh 5°50’ sampai 7°50’ Lintang Selatan dan 104°48’ sampai 108°48’ Bujur Timur. Penelitian ini bertujuan untuk mengetahui seismisitas dan zonasi di daerah Provinsi Jawa Barat. Seismisitas dapat di ketahui dari peta seismisitas berdasarkan kedalaman dan magnitudo, untuk memperoleh peta seismisitas di daerah Provinsi Jawa Barat yaitu dengan menggunakan data gempa bumi tektonik harian atau realtime dengan periode terjadinya gempa bumi pada tahun 2000-2015, yang bersumber dari BMKG (Badan Meteorologi Klimatologi dan Geofisika) Klas 1 Bandung. Data gempa terdiri dari tanggal, waktu  terjadinya gempa, lintang, bujur, kedalaman dan magnitudo (M ≥ 4.5 SR), data yang ada di proses dengan menggunakan Software Arcgis 10.3 sehingga menjadi peta seismisitas yang telah di klasifikasikan berdasarkan kedalaman dan magnitudo gempa bumi. Zonasi di daerah Provinsi Jawa Barat di peroleh dengan menentukan nilai Percepatan Tanah Maksimum (Peak Ground Acceleration) yang terbagi kedalam 18 kabupaten, dan menentukan nilai PGA dan intensitas gempa di setiap Kabupaten, adapun cara untuk memperoleh nilai PGA dan intensitas gempa yaitu dengan melakukan proses perhitungan data gempa yang ada, dengan menggunakan metode Gutenberg Richter. Sehingga di peroleh kesimpulan berdasarkan peta seismisitas di dapatkan distrubusi gempa bumi berjumlah 792 gempa bumi, serta zonasi gempa bumi di daerah Provinsi Jawa Barat berdasarkan nilai PGA sebesar 25-29 gal, dan nilai intensitas gempa bumi sebesar V.West Java province bounded by 5 ° 50 'and 7 ° 50' south latitude and 104 ° 48 'to 108 ° 48' east longitude. This study aims to determine the seismicity and zoning in the area of West Java Province. Seismicity can be in the know of seismicity map based on the depth and magnitude, to obtain the map of seismicity in the area of West Java province is by using daily tectonic earthquake data or realtime with the period of the earthquake in the year 2000-2015, which is sourced from BMKG (Meteorology and Geophysics) Class 1 Bandung. Seismic data consists of the date, the time of the earthquake, latitude, longitude, depth and magnitude (M ≥ 4.5 SR), the data that is in the process of using ArcGIS 10.3 software so that a map of seismicity which has been classified based on the depth and magnitude of the earthquake. Zoning in the area of West Java province was obtained by determining the value of the Acceleration of Land Maximum (Peak Ground Acceleration), divided into 18 districts, and determine the value of PGA and intensity of earthquakes in each district, as for how to obtain the value of PGA and earthquake intensity by performing the calculation process existing seismic data, using Gutenberg Richter. Thus obtained conclusions based on maps of seismicity in distrubusi get earthquakes amounted to 792 earthquakes, and earthquake zoning in the area of West Java Province based on the value of the PGA of 25-29 gal and earthquake intensity value of V.Keywords: Zoning earthquake, seismicity , Software ArcGIS 10.3., Methods Gutenberg Richter earthquake intensity.

scholarly journals Penentuan Nilai Percepatan Tanah Maksimum Terhadap Mitigasi Gempabumi Kabupaten Pidie Jaya, Provinsi Aceh

2020 ◽  
Vol 17 (1) ◽  
pp. 23-26
Author(s):  
Retno Agung ◽  
Alfian Indrajaya
Keyword(s):  
Peak Ground Acceleration ◽  
Disaster Mitigation ◽  
Geological Condition ◽  
Physiographic Unit ◽  
Ground Acceleration ◽  
Earthquake Disaster ◽  
Maximum Value ◽  
Geological Map ◽  
Banda Aceh ◽  
Earthquake Data

Penelitian ini dilakukan di daerah Kabupaten Pidie Jaya, yang secara geografis terletak pada koordinat 4˚54 ’15 .702 ’’ N - 5˚18 ’244 N dan 96˚1 ’13, 656 E - 96˚22 ’1.007 E. Fisiografi regional wilayah penelitian dimasukkan dalam peta geologi Banda Aceh, Lohk Seumawe, Takengon, dengan unit fisiografi Zona Kaki Bukit Barisan. Kondisi geologis daerah penelitian terdiri dari Batuan Pra-Tersier, Tersier, dan Kuarterner. Penelitian ini bertujuan untuk menghitung, menganalisis dan menentukan nilai Puncak Maksimal Percepatan Tanah, sehingga peta percepatan tanah dan peta zona mitigasi bencana gempa bumi dapat diperoleh untuk Kabupaten Pidie Jaya. Berdasarkan hasil pengolahan data gempa bumi di Kabupaten Pidie Jaya pada 7 Desember 2016 penulis menemukan nilai maksimum percepatan tanah puncak dengan menggunakan metode Boore (1997) adalah: 225,7 - 85,8 gal. Sementara itu dengan menggunakan metode Fukusima dan Tanaka (1992), hasilnya adalah: 115,0-115,0 gal. Dengan menggabungkan faktor-faktor litologi data sebagai data pendukung lainnya untuk pembobotan, penulis dapat menghasilkan Peta Zona Mitigasi Bencana Gempa Bumi, dari kategori rendah hingga kategori tinggi untuk kabupaten ini. This research was carried out in the Pidie Jaya Regency area, which geographycally situated at coordinates 4˚54 ‘15.702 ‘’ N - 5˚18 ‘2,244 N and 96˚1 ‘13,656 E - 96˚22 ‘1,007 E. Regional physiography of the study area is included in the geological map of Banda Aceh, Lohk Seumawe, Takengon, with the physiographic unit of the Bukit Barisan Foot Zone. The geological condition of the study area is composed of Pre-Tertiary, Tertiary and Quarternary Rocks. This study aims to calculate, analyze and determine the value of Maximum Peak of Ground  Acceleration, so that ground acceleration maps and earthquake disaster mitigation zone maps can be obtained for Pidie Jaya District. Based on the results of the earthquake data processing in Pidie Jaya Regency on December 7, 2016 the author find the maximum value of  peak ground  acceleration using the Boore method (1997) is: 225,7 - 85,8 gal. Meanwhile by using Fukusima and Tanaka method (1992), the result is: 115,0-115,0 gal. By combining those data lithological factors as other supporting data for weighting, the author could produces an Earthquake Disaster Mitigation Zone Map, from low category untill high category for this district.

scholarly journals Peak Ground Acceleration (PGA) and Peak Ground Velocity (PGV) Analyze for Microzonation of Earthquake Hazard Area: Case Study in West Nusa Tenggara

2021 ◽  
Vol 873 (1) ◽  
pp. 012046
Author(s):  
T Razin ◽  
K Khatimah ◽  
Y Annisa ◽  
A Hamzah ◽  
M F I Massinai
Keyword(s):  
Peak Ground Acceleration ◽  
Earthquake Damage ◽  
Peak Ground Velocity ◽  
Risk Level ◽  
Soil Conditions ◽  
Earthquake Intensity ◽  
Ground Acceleration ◽  
Tectonic Zone ◽  
Local Soil ◽  
Earthquake Data

Abstract The Lombok region is located around a complex tectonic zone with an Indo-Australian oceanic crust transition zone with Australian continental crust in the west and Sundanese arc in the east. This complexity makes some area in West Nusa Tenggara have a high level of earthquake vulnerability and to determine the potential level of seismic damage risk this study was conducted by analyzing Peak Ground Acceleration (PGA) and Peak Ground Velocity (PGV) using earthquake data since 2000 - March 2020 with an intensity more than M4.5. Earthquake data are analyzed using the Yin-Min Yu formula to get the relationship between Peak Ground Acceleration (PGA), Peak Ground Velocity (PGV), and earthquake intensity, so areas with risk level of earthquake damage can be mapped as preliminary earthquake mitigation schemes. The results of the study show that the highest PGA value in West Nusa Tenggara is 74.73 gal at the bedrock and when it on the surface, the PGA value can increase due to amplification of local soil conditions. Likewise PGV value about 32.21 gal where this maximum value is located in East Lombok Regency and North Lombok Regency. According to the classification of PGA and PGV values, the study area has a potential high-risk level of earthquake damage.

scholarly journals ANALYSIS OF A PEAK GROUND ACCELERATION VALUE AND EARTHQUAKE INTENSITY USING DONOVAN METHOD IN BANTEN PROVINCE

2020 ◽  
Vol 5 (3) ◽  
pp. 213-220
Author(s):  
Elsi Ariani
Keyword(s):  
Peak Ground Acceleration ◽  
Risk Level ◽  
Historical Earthquake ◽  
Moderate Risk ◽  
Earthquake Intensity ◽  
Ground Acceleration ◽  
Prone Area ◽  
Maximum Earthquake ◽  
Data Analysis Result ◽  
Earthquake Data

Analysis of a peak ground acceleration value and earthquake intensity in Banten Province has been carried out using historical earthquake data from 2008 to 2018. This research aims to describe a prone area of the earthquake. The specification of data was a magnitude > 5 SR and the depth 0-70 km. The Donovan method was used to analyze peak ground acceleration value and the earthquake’s intensity. According to the data obtained, 31 earthquake points with a maximum earthquake strength occurred on October 16, 2019, with a depth of 10 km and a magnitude of  6.48 SR. This earthquake was located in Ujung Kulon with coordinates -6.81 LS and 105.113 BT. Based on data analysis result was obtained a peak ground acceleration value and the intensity of earthquake maximum in The Pandeglang Regency with a peak ground acceleration value was 211.56 cm/s2, and intensity of scale VIII and a large risk level of three. While a peak ground acceleration minimum is located in the South Tangerang City was 62.82 cm/s2 with a scale of intensity VII and a moderate risk level.

scholarly journals Determination of Empirical Formula Model of Soil Vibration Acceleration of Denpasar Area

2018 ◽  
Vol 19 (1) ◽  
pp. 23
Author(s):  
Dwi Karyadi Priyanto ◽  
K.N. Suarbawa ◽  
Ardhianto Septiadhi
Keyword(s):  
Empirical Model ◽  
Empirical Formula ◽  
Peak Ground Acceleration ◽  
Spreading Coefficient ◽  
Geometrical Spreading ◽  
Vibration Acceleration ◽  
Ground Acceleration ◽  
Statistical Verification ◽  
Positive Linear Correlation

In this research, we have determined the model of empirical formula of Peak Ground Acceleration (PGA) based on general formula of Lin and Wu using 62 observational PGA data which corresponds to earthquake parameter data of Bali and its surroundings for year 2008-2013. Based on the regression analysis, the geometrical spreading coefficient is a = -2.019, the magnitude coefficient b = 0.894, the empirical model formula constant c = 0.551, and the empirical model of PGA model for Denpasar is. The results of statistical verification yielded a strong positive linear correlation of 0.853 with the residual error of 0.035.

scholarly journals The Ground-Motion Attenuation Comparison: A case study for the 2017/05/11 Askale earthquake (Mw4.7)

2020 ◽  
Vol 1 (3) ◽  
pp. 22-26
Author(s):  
Erdem Bayrak
Keyword(s):  
Peak Ground Acceleration ◽  
Complex Structure ◽  
Seismic Belt ◽  
Ground Acceleration ◽  
Attenuation Relationships ◽  
Ground Motion Attenuation ◽  
Acceleration Data ◽  
Earthquake Zone ◽  
Relationship Of

Turkey is located on the Mediterranean-Himalayan seismic belt, which is the second largest earthquake zone in the world. Due to the fact that Erzurum basin is located in the Eastern Anatolia Region, it has a very complex structure in terms of its geological, tectonic and morphological features. Erzurum has been affected by destructive earthquakes throughout history. Some of these are Erzincan earthquake (26 December 1939), Horasan-Narman earthquake (30 October 1983), Spitak-Armenia earthquake (7 December 1988). In this study, the acceleration data of Erzurum-Aşkale (Mw=4.7) was used in order to estimate the peak ground acceleration using attenuation relationships. Attenuation relationships are important to determine how the peak ground acceleration decreases with distance. The data was recorded at twenty accelerometers in and around Erzurum. Peak ground accelerations were estimated according to Sadigh et al. (1997), Ambraseys et al. (1996), Kalkan and Gülkan (2004) attenuation relationships. As a result of calculations and comparisons, attenuation relationship of Sadigh et al. (1997) has found to be appropriate to the acceleration values recorded in the stations and has given the best results for the different soil types.

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