Source parameters and moment tensor of the ML 4.6 earthquake of November 19, 2011, southwest Sharm El-Sheikh, Egypt

Mohamed, Gad-Elkareem A.; Omar, Khaled

doi:10.1016/j.nrjag.2014.02.003

Cited by 4 publications

(2 citation statements)

References 30 publications

(26 reference statements)

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“…Then the station data and pzfile are saved into ISOLA. The following is the main ISOLA display used to process data [16][17].…”

Section: Data Processingmentioning

confidence: 99%

Optimization of Band Pass Filter for Variance Reduction in Determining The Solution of Moment Tensor and Focusing Mechanism with ISOLA-GUI Sequence of The Minahasa Peninsula Earthquake Date 28 September 2018 to 1 October 2018

Anggono¹,

Tarigan²,

Barus³

2021

J. Technomaterial Phys.

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Sulawesi is one of the islands in Indonesia with a high level of seismicity because there are many active faults, especially in the Minahasa Peninsula area. This study discusses the moment tensor solution and the focus mechanism in the Minahasa Peninsula region from 28 September 2018 to 1 October 2018 using the ISOLA-GUI program. This program is used to process seismic data from the three components recorded by the seismogram. The data used in this study were five earthquake events consisting of earthquake foreshock, earthquake mainshock, and earthquake aftershock. With the ISOLA program, data processing is carried out which includes: crustal models, event info, selecting earthquake recording stations, preparing raw data for defining seismic sources, calculating green functions with computations, performing inversions and plotting results. In the inversion, the frequency of the band pass filter is selected to obtain the optimal reduction variance. After processing, calculating and interpreting the plot results, a fault model is obtained for each earthquake event, namely strike-slip.

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“…Then the station data and pzfile are saved into ISOLA. The following is the main ISOLA display used to process data [16][17].…”

Section: Data Processingmentioning

confidence: 99%

Optimization of Band Pass Filter for Variance Reduction in Determining The Solution of Moment Tensor and Focusing Mechanism with ISOLA-GUI Sequence of The Minahasa Peninsula Earthquake Date 28 September 2018 to 1 October 2018

Anggono¹,

Tarigan²,

Barus³

2021

J. Technomaterial Phys.

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“…Penggunaan program Isola untuk mendapatkan parameter mekanisme sumber gempa bumi telah dilakukan sebelumnya oleh banyak peneliti gempa bumi di Indonesia (Kasmolan, Santosa, Lees, & Utama, 2010;Rasmid, 2014;Santosa, 2012) dan banyak peneliti gempa bumi di luar Indonesia (Carvalho, Barros, & Zahradník, 2016;Choi & Noh, 2010;Dias & Assumpcao, 2013;Kumar, Gupta, & Kumar, 2015;Mohamed & Omar, 2014;E. N. Sokos & Zahradnik, 2008;Srijayanthi, Kumar, Prasanna, & Rao, 2017).…”

Section: Pendahuluanunclassified

Pemodelan Mekanisme Sumber Gempa Bumi Ransiki 2012 Berkekuatan Mw 6,7

Sianipar

Serhalawan

2017

j. sains. teknologi.

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AbstrakSalah satu gempa bumi merusak yang terjadi di Indonesia pada tahun 2012 adalah gempa bumi Ransiki, Papua Barat 21 April 2012, Mw 6,7. Yang menarik dari gempa bumi ini adalah lokasi gempa bumi yang berdekatan dengan dua sesar, yaitu sesar Ransiki dan sesar Yapen. Tujuan penelitian ini adalah membuat pemodelan dan menganalisis mekanisme sumber gempa bumi untuk mengetahui sesar penyebab gempa bumi Ransiki. Mekanisme sumber gempa bumi dimodelkan dari proses inversi tensor momen menggunakan program Isola. Untuk menentukan "bidang sesar sebenarnya" (true fault plane) digunakan program HC-plot. Hasil inversi tensor momen menunjukan bahwa gempa bumi Ransiki merupakan gempa bumi mekanisme sesar geser dengan bidang nodal 1; strike 355 0 , dip 68 0 , rake -165° dan bidang nodal 2; strike 259°, dip 76°, rake -23°. Pengolahan dengan program HC-plot menghasilkan "bidang sesar sebenarnya" yaitu bidang nodal 2 dengan strike 259°, dip 76°, rake -23°. Hasil ini menunjukan bahwa gempa bumi Ransiki 21 April 2012 Mw 6,7, disebabkan oleh sesar Yapen dengan mekanisme sesar geser mengiri berarah barat-timur, tidak disebabkan oleh sesar Ransiki. Kata kunci: mekanisme sumber, inversi, isola, HC-plot AbstractOne of destructive earthquake that occurred in Indonesia region in year 2012, is Ransiki, April 21 th , 2012 earthquake, with Mw 6,7. The interesting thing of this event is its location which is very close with two geological faults, i.e. Ransiki Fault and Yapen Fault. The aim of this study is to determine the source mechanism of this Mw 6.7 earthquake and to analyze its implication as a generation source of a destructive earthquake. Earthquake source mechanism is determined by moment tensor inversion method using Isola program. To determine the true fault plane, HC-plot program is used. Moment tensor inversion results show that the source mechanism of the earthquake is a strike-slip fault with nodal plane 1; strike 355°, dip 68°, rake -165° and nodal plane 2; strike 259°, dip 76°, rake -23°. Using HC-plot method, the true fault plane is nodal plane 2 with strike 259°, dip 76°, rake -23°. These results indicate Ransiki, April 21th, 2012 earthquake caused by Yapen fault which is a sinistral strike-slip fault trending west-east, not caused by Ransiki Fault.Keywords : source mechanism, inversion, isola, HC-plot PENDAHULUANWilayah Papua merupakan salah satu wilayah di Indonesia yang memiliki tingkat kompleksitas tektonik yang tinggi. Tingkat kompleksitas tersebut disebabkan oleh pertemuan beberapa lempeng tektonik besar diantaranya lempeng Indo-Australia, lempeng Pasifik dan lempeng laut Filipina (Baldwin, Fitzgerald, & Webb, 2012;Pubellier & Ego, 2002). Hal ini berimplikasi pada munculnya sesar-sesar lokal yang tersebar di wilayah Papua seperti yang ditampilkan pada Gambar 1. Pertemuan lempeng tektonik dan aktivitas sesar-sesar lokal ini berpotensi menjadi sumber pembangkit gempa bumi di wilayah Papua. Beberapa gempa bumi besar yang signifikan dan merusak tercatat pernah terjadi di wilayah Papua dalam satu dekade terakhir di antar...

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Analysis of the similar epicenter earthquakes on 22 January 2013 and 01 June 2013, Central Gulf of Suez, Egypt

Toni

Barth

Ali

et al. 2016

Journal of African Earth Sciences

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Source parameters and moment tensor of the ML 4.6 earthquake of November 19, 2011, southwest Sharm El-Sheikh, Egypt

Cited by 4 publications

References 30 publications

Optimization of Band Pass Filter for Variance Reduction in Determining The Solution of Moment Tensor and Focusing Mechanism with ISOLA-GUI Sequence of The Minahasa Peninsula Earthquake Date 28 September 2018 to 1 October 2018

Optimization of Band Pass Filter for Variance Reduction in Determining The Solution of Moment Tensor and Focusing Mechanism with ISOLA-GUI Sequence of The Minahasa Peninsula Earthquake Date 28 September 2018 to 1 October 2018

Pemodelan Mekanisme Sumber Gempa Bumi Ransiki 2012 Berkekuatan Mw 6,7

Analysis of the similar epicenter earthquakes on 22 January 2013 and 01 June 2013, Central Gulf of Suez, Egypt

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