scholarly journals Analysis of susceptible disaster region based on the peak ground acceleration and earthquake intensity in Mamasa 2018

2021 ◽  
Vol 1816 (1) ◽  
pp. 012014
Author(s):  
A Anugrayanti ◽  
M Arsyad ◽  
V A Tiwow
Keyword(s):  
Peak Ground Acceleration ◽  
Earthquake Intensity ◽  
Ground Acceleration

scholarly journals Peak Ground Acceleration and Earthquake Intensity Microzonation in Watukumpul, Pemalang Regency

2019 ◽  
Vol 3 (2) ◽  
pp. 60
Author(s):  
Urip Nurwijayanto Prabowo ◽  
Ayu Fitri Amalia ◽  
Widodo Budhi
Keyword(s):  
Peak Ground Acceleration ◽  
Spectral Ratio ◽  
Ratio Method ◽  
Earthquake Intensity ◽  
Ground Acceleration ◽  
Predominant Period ◽  
The North ◽  
Central Java ◽  
Intensity Calculation ◽  
Microtremor Measurements

Watukumpul is located in Pemalang District, Central Java, which is adjacent to the fault seismotectonic line of Baribis fault in the north and subduction area of the Eurasian and Indies-Australian plates in the south. It makes Watukumpul often experiences an earthquake. This study aimed to map the peak ground acceleration calculated using the Kanai equation and earthquake intensity calculated using Wald equations in Watukumpul. This study used historical earthquake data occurred in 1988-April 2018 from the International Seismological Center and microtremor measurements of 33 points. Microtremor data were processed using the Horizontal to Vertical Spectral Ratio method and resulted the predominant period of study area ranged from 0.13 to 0.74 s. The results showed that the study area had a PGA value of 26.93 - 63.25 gal. The intensity calculation showed that the study area has the potential for earthquake damage with an III-IV MMI scale. Keywords: Kanai, Watukumpul, Intensity, Earthquake

scholarly journals Analisis Pengaruh Nilai Peak Ground Acceleration (PGA) Terhadap Story Shear Bangunan Bertingkat

2018 ◽  
Vol 9 (2) ◽  
pp. 1
Author(s):  
Ahmad Hamidi
Keyword(s):  
Coastal Area ◽  
Peak Ground Acceleration ◽  
Dynamic Method ◽  
Response Spectrum ◽  
Earthquake Intensity ◽  
Ground Acceleration ◽  
Spectrum Response

This study aims to analyze and examine the effect of peak land acceleration value (PGA) on shear story using dynamic method of response spectrum. The PGA value and the spectrum response used are the spectrum responses issued by the PU ministry. The review is soft land in the citys in Riau. The results showed that the higher the story shear value, the higher the PGA value in each region. The areas with the highest inner and PGA grades are Pasir Pangarian (Rohul) and the lowest is Kota Selat Panjang (Meranti District). This is because the area of Rohul Regency is an area close to West Sumatera Province that has a high enough earthquake intensity when compared with Meranti Regency which is a coastal area located on the lower plains.

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 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 Analisis Peak Ground Acceleration (PGA) dan Intensitas Gempabumi berdasarkan Data Gempabumi Terasa Tahun 1981 - 2014 di Kabupaten Bantul Yogyakarta

2016 ◽  
Vol 6 (01) ◽  
pp. 65 ◽  
Author(s):  
Nugroho Budi Wibowo ◽  
Juwita Nur Sembri
Keyword(s):  
Peak Ground Acceleration ◽  
Historical Data ◽  
Historical Record ◽  
Earthquake Occurrence ◽  
Damage Potential ◽  
Earthquake Intensity ◽  
Ground Acceleration ◽  
Small Earthquake ◽  
The Third ◽  
Special Region

Seismic historical record in Java period of 1981-2014 recorded that the Special Region of Yogyakarta was hit by damaging earthquake 4 times and hundreds of small earthquakes felt. This research was aimed to assess the peak ground acceleration (PGA) zone and the earthquake intensity based on historical data of earthquake occurrence in 1981-2014. Peak Ground Acceleration was calculated using Kanai equation and earthquake intensity using Wald equation. This research was conducted by using 231 microtremor data in Bantul District that derived from BMKG and also 147 data of damaging earthquake and small earthquake felt from BMKG. The result of this study represent peak ground acceleration value in Bantul District which was varied from 57.7-412.7 gal. Peak Ground Acceleration Zonation of Bantul District was diveded by 3 zones; first zone with PGA value 57.7-91 gal, the second zone with PGA value 92-179 gal and the third zone with PGA value higher than 180 gal. While based on earthquake intensity, Bantul District has damage potential of V-VII MMI in intensity scale.

Analisis Percepatan Tanah Puncak Akibat Gempa Pada Kota Sorong Sebagai Upaya Mitigasi Bencana

2018 ◽  
Vol 4 (2) ◽  
pp. 14
Author(s):  
Imam Trianggoro Saputro ◽  
Mohammad Aris
Keyword(s):  
Peak Ground Acceleration ◽  
Ground Acceleration ◽  
Papua Barat

Sorong merupakan salah satu kota yang terletak di Provinsi Papua Barat. Daerah ini memiliki tingkat kerentanan yang tinggi terhadap ancaman bahaya gempa bumi karena lokasinya terletak di antara pertemuan lempengan tektonik dan beberapa sesar aktif. Tingkat kerawanan terhadap gempa pada daerah ini cukup tinggi. Pada September 2016, BMKG mencatat bahwa terjadi gempa bumi dengan skala magnitudo sebesar 6,8 SR (Skala Ritcher) dengan kedalaman 10 meter dari permukaan laut dan berjarak 31 km arah timur laut kota Sorong. Gempa ini bersifat merusak. Akibat gempa ini, sebanyak 62 orang terluka dan 257 rumah rusak. Untuk itu diperlukan suatu analisis terhadap percepatan tanah puncak (Peak Ground Acceleration) terbaru sebagai langkah mitigasi yang nantinya dapat digunakan untuk perencanaan gedung tahan gempa.Pengumpulan data gempa pada peneltian ini yaitu data gempa yang terjadi sekitar kota Sorong pada rentang waktu 1900-2017. Data gempa yang diambil adalah yang berpotensi merusak struktur yaitu dengan magnitudo (Mw) ≥ 5 dengan radius gempa 500 km dari kota Sorong dan memiliki kedalaman antara 0 - 300 km. Setelah diperoleh data gempa maka dibuat peta sebaran gempa di wilayah kota Sorong. Percepatan tanah puncak dihitung berdasarkan fungsi atenuasi matuscha (1980) dan menggunakan pendekatan metode Gumbel.Hasil penelitian menunjukkan bahwa nilai percepatan tanah puncak (PGA) di wilayah kota Sorong pada periode ulang 2500 tahun atau menggunakan probabilitas terlampaui 2% dalam 50 tahun umur rencana bangunan diperoleh sebesar 708.9520 cm/dt2 atau 0.7227 g. Apabila melihat peta gempa SNI 1726-2012 yang menggunakan probabilitas yang sama maka nilai percepatan tanah puncak (PGA) ketika gempa bumi berkisar antara 0.4 g - 0.6 g. Nilai ini mengalami peningkatan yang berarti tingkat resiko terhadap gempa bumi pada wilayah kota Sorong meningkat.

A Geospatial Liquefaction Model for Rapid Response and Loss Estimation

2015 ◽  
Vol 31 (3) ◽  
pp. 1813-1837 ◽  
Author(s):  
Jing Zhu ◽  
Davene Daley ◽  
Laurie G. Baise ◽  
Eric M. Thompson ◽  
David J. Wald ◽  
...  
Keyword(s):  
Peak Ground Acceleration ◽  
Loss Estimation ◽  
Rapid Response ◽  
Ground Acceleration ◽  
Explanatory Variables ◽  
First Order ◽  
Database Development ◽  
Digital Elevation ◽  
Compound Topographic Index ◽  
Distance Parameter

We describe an approach to model liquefaction extent that focuses on identifying broadly available geospatial variables (e.g., derived from digital elevation models) and earthquake-specific parameters (e.g., peak ground acceleration, PGA). A key step is database development: We focus on the 1995 Kobe and 2010–2011 Christchurch earthquakes because the presence/absence of liquefaction has been mapped so that the database is unbiased with respect to the areal extent of liquefaction. We derive two liquefaction models with explanatory variables that include PGA, shear-wave velocity, compound topographic index, and a newly defined normalized distance parameter (distance to coast divided by the sum of distance to coast and distance to the basin inland edge). To check the portability/reliability of these models, we apply them to the 2010 Haiti earthquake. We conclude that these models provide first-order approximations of the extent of liquefaction, appropriate for use in rapid response, loss estimation, and simulations.

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