Meliana, Susanti (2017) Analisa Momen Tensor Dan Fokal Mekanisme Pada Gempa 5 Tahun Terakhir Di Wilayah Boso Peninsula, Jepang. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Jepang merupakan salah satu Negara yang dihimpit oleh 4 lempeng utama dunia yang menyebabkan Jepang sering mengalami gempa bumi. Penelitian ini bertujuan untuk mengetahui jenis dan arah patahan dan nilai rerata pergeseran yang disebabkan oleh gempa bumi di wilayah Boso Peninsula, Jepang selama 5 tahun. Penelitian ini dilakukan dengan menggunakan database gempa dari NIED periode 1 Januari 2011 hingga 23 September 2016 berkekuatan 4.8 SR hingga 6.7 SR.. Metodologi penelitian ini dilakukan dengan menggunakan inversi tiga komponen gelombang seismik yang terekam dalam seismogram dan penggambaran bidang sesar menggunakan prinsip momen tensor dan fokal mekanisme dalam beachball melalui pengolahan dengan program ISOLA dan HCPLOT berbasis GUI pada software MATLAB. Sehingga dapat ditarik kesimpulan bahwa pada wilayah Boso selama 5 tahun besar momen tensor berkisar antara 1.86e+17 hingga 9.50E+14 Nm, dengan jenis sesar bervariasi yaitu sesar strikeslip sebanyak 6 event,oblique sebanyak 8 event, reserve sebanyak 10 event , normal sebanyak 6 event, dan besar rerata pergeseran adalah sebesar 6.2 cm.
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Japan is one of the countries surrounded by four major plates of the world that cause Japan often experience earthquakes. This study aims to determine the type and direction of fracture and the average value of shifts caused by earthquakes in Boso Peninsula region, Japan for 5 years. This study was conducted using earthquake database from NIED period January 1, 2011 to 23 September 2016 measuring 4.8 SR to 6.7 SR. The methodology of this research was conducted by using the inversion of three components of seismic waves recorded in the seismogram and the description of the fault field using the principle of tensor moment and focal mechanism in the beachball through processing with ISOLA program and GUI based HCPLOT on MATLAB software. So it can be concluded that in Boso area for 5 years big moment tensor moment ranged between 1.86e + 17 until 9.50E + 14 Nm, with variation of fault type that is strikeslip fault 6 event, oblique 8 event, reserve 10 event, and normal 6 events, and the average displacement is 6.2 cm.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | beachball, gempa, mekanisme fokal, momen tensor, dan pola sesar. |
| Subjects: | Q Science Q Science > QC Physics Q Science > QE Geology Q Science > QE Geology > QE571 Sedimentation and deposition. Sediment transport. Erosion. Q Science > QE Geology > QE601 Geology, Structural |
| Divisions: | Faculty of Mathematics and Science > Physics |
| Depositing User: | Meliana Susanti |
| Date Deposited: | 29 Dec 2017 07:21 |
| Last Modified: | 06 Mar 2019 02:28 |
| URI: | http://repository.its.ac.id/id/eprint/47376 |
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