scholarly journals Centroid-moment-tensor analysis of the 2011 off the Pacific coast of Tohoku Earthquake and its larger foreshocks and aftershocks

2011 ◽  
Vol 63 (7) ◽  
pp. 519-523 ◽  
Author(s):  
Meredith Nettles ◽  
Göran Ekström ◽  
Howard C. Koss
Keyword(s):  
Pacific Coast ◽  
Moment Tensor ◽  
Tohoku Earthquake ◽  
Tensor Analysis ◽  
Centroid Moment Tensor ◽  
The Pacific ◽  
Moment Tensor Analysis

scholarly journals Analisis Potensi Tsunami Menggunakan Mekanisme Fokus (Studi Kasus Gempa 15 November 2014

Jurnal MIPA ◽  
2018 ◽  
Vol 7 (1) ◽  
pp. 12
Author(s):  
Aprillya J.G Arikalang ◽  
Guntur Pasau ◽  
Ferdy _
Keyword(s):  
Empirical Formula ◽  
Moment Tensor ◽  
Ocean Floor ◽  
Tensor Analysis ◽  
Surrounding Area ◽  
Centroid Moment Tensor ◽  
Regional Seismicity ◽  
North Sulawesi ◽  
Source Data ◽  
Moment Tensor Analysis

Lempeng laut Maluku merupakan lempeng mikro yang berada di antara lempeng mikro Sangihe dan Halmahera yang bergerak berlawanan arah, kondisi ini mengakibatkan kegempaan daerah Sulawesi Utara dan sekitarnya terkonsentrasi di sebagian besar wilayah Laut Maluku dan sisanya terjadi di Laut Sulawesi. Adapun tujuan penelitian ini adalah untuk menentukan karakterisik pola patahan akibat gempabumi tanggal 15 November 2014 di Laut Maluku koordinat 10 LS – 30 LU dan 1200 - 1300 BT dengan sumber data dari katalog gempa bumi USGS dan Global Centroid Momen Tensor. Analisis bola fokus bahwa gempa tanggal 14 November 2014 dengan koordinat 10 LS – 30 LU dan 1200 - 1300 BT adalah kombinasi sesar mendatar dan sesar naik atau jenis sesar ini disebut juga oblique. Hasil analisis menggunakan Sofware WinITDB dan perhitungan rumus empiris menunjukkan bahwa terjadi deformasi di dasar laut 1,409 m, yang menyebabkan terjadinya Tsunami yang kecil, karena deformasi yang terjadi belum cukup kuat pengaruhnya untuk merobek permukaan dasar laut.Molucca Sea plate is the plate between the micro’s plate Sangihe and Halmahera are moving in opposite directions, these conditions result in the regional seismicity of North Sulawesi and the surrounding area is largely concentrated in the Molucca sea and the rest occur in the Celebes Sea. As for the purpose of this research is to determine the result of fracturing pattern karakterisik gempabumi November 15, 2014 in the Molucca sea coordinates 10 LS – 30 N and 1200-1300 BT with the source data from the USGS earthquake catalogs and the Global Centroid Moment Tensor. Analysis of the focal sphere that the earthquake on 14 November 2014 with coordinates 10 LS – 30 N and 1200-1300 BT is a combination of horizontal fault and fault ride or any type of fault is also called oblique. The results of the analysis using WinITDB Software and calculation of empirical formula indicate that occurs on the ocean floor deformation 1.409 m, which led to a small Tsunami, because deformations that occur are not yet strong enough to rip his influence the surface of the seabed.

Regional Centroid-Moment-Tensor Analysis for Earthquakes in Canada and Adjacent Regions: An Update

2012 ◽  
Vol 83 (3) ◽  
pp. 505-515 ◽  
Author(s):  
H. Kao ◽  
S.-J. Shan ◽  
A. Bent ◽  
C. Woodgold ◽  
G. Rogers ◽  
...  
Keyword(s):  
Moment Tensor ◽  
Tensor Analysis ◽  
Centroid Moment Tensor ◽  
Moment Tensor Analysis

Development and Operation of a Regional Moment Tensor Analysis System in the Philippines: Contributions to the Understanding of Recent Damaging Earthquakes

2015 ◽  
Vol 10 (1) ◽  
pp. 25-34 ◽  
Author(s):  
Baby Jane T. Punongbayan ◽  
◽  
Hiroyuki Kumagai ◽  
Nelson Pulido ◽  
Jun D. Bonita ◽  
...  
Keyword(s):  
Moment Tensor ◽  
Waveform Inversion ◽  
The Philippines ◽  
Tensor Analysis ◽  
Philippine Sea Plate ◽  
Source Analysis ◽  
Source Information ◽  
Centroid Moment Tensor ◽  
Moment Tensor Analysis ◽  
Analysis System

A network of 10 satellite-telemetered broadband stations was established under a cooperative project between Japan and the Philippines, and a source analysis system based on waveform inversion of regional seismograms was adapted to operationalize a regional moment tensor analysis of Philippine earthquakes. This study presents the source information generated by the system for recent damaging earthquakes: theMw6.7 Negros andMw7.6 offshore Samar in 2012, and theMw7.2 in Bohol in 2013. Results show that the Negros event was generated by shallow NE–SW thrust faulting with a small strike-slip component, and that the centroid was located slightly offshore. The Samar event occurred in relation to an outer-trench thrust fault within the Philippine Sea Plate, adjacent to a part of the Philippine Trench that has relatively low seismicity. Our centroid moment tensor (CMT) solutions show that the Samar event triggered distinct clusters of outer-rise normal and thrust aftershocks, which we explain as being consistent with a Coulomb stress change in the area. Finally, we infer that the previously unidentified fault zone that generated the Bohol earthquake has a length of ∼ 100 km, is oriented ENE–WSW, transects parts of Bohol, and extends offshore towards Cebu. These examples show how recent improvements in Philippine earthquake monitoring could contribute to the characterization of earthquake sources and in the understanding of the seismotectonics of the area.

scholarly journals Seawater-leaching Testing for Arsenic and Heavy Metals in Tsunami Deposits Produced by the 2011 off the Pacific Coast of Tohoku Earthquake, Northeastern Japan

2014 ◽  
Vol 123 (6) ◽  
pp. 835-853 ◽  
Author(s):  
Takahiro WATANABE ◽  
Noriyoshi TSUCHIYA ◽  
Shin-ichi YAMASAKI ◽  
Ryoichi YAMADA ◽  
Nobuo HIRANO ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Pacific Coast ◽  
Tohoku Earthquake ◽  
Tsunami Deposits ◽  
Northeastern Japan ◽  
The Pacific
Sign in / Sign up

Export Citation Format

Share Document