Source rupture process inversion of the 2013 Lushan earthquake, China

Zhang, Lifen; Fatchurochman, Iman; Liao, Wulin; Li, Jinggang; Wang, Qiuliang

doi:10.3724/sp.j.1246.2013.02016

Cited by 5 publications

(4 citation statements)

References 5 publications

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“…The linear inversion model carried out using extended dimensions (compared to the non-linear inversion) of the source faults has helped to derive the distributed slip along the fault planes. The seismic moment and magnitude obtained based on linear inversion model is comparable to the values reported by Lifen et al (2013) and Zhao et al (2013), using teleseismic body wave data.…”

Section: Discussionsupporting

confidence: 72%

SAR interferometry and optical remote sensing for analysis of co-seismic deformation, source characteristics and mass wasting pattern of Lushan (China, April 2013) earthquake

Mathew

Majumdar

Kumar

2015

International Journal of Applied Earth Observation and Geoinfor

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Section: Discussionsupporting

confidence: 72%

SAR interferometry and optical remote sensing for analysis of co-seismic deformation, source characteristics and mass wasting pattern of Lushan (China, April 2013) earthquake

Mathew

Majumdar

Kumar

2015

International Journal of Applied Earth Observation and Geoinfor

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“…According to the results of the seismic stress change analysis, shown in Fig. 4, there are several potential earthquake zones, including along the west coasts of Aceh, Nias, and Bengkulu, in addition to the Mentawai seismic gap zones [37], [38], [41], [42]. In more detail, it shows that the seismic stress zone has consistently increased by the depth of 30-50 kms for the Bengkulu west coast.…”

Section: Resultsmentioning

confidence: 94%

“…3b, highlights a Mentawai seismic gap zone. The pattern of the increased seismic stress in the gap zone will not only trigger major earthquakes in Mentawai islands, but also tsunamis that are assumed to bring about effects upon the densely populated cities and coastal areas around West Sumatra within about 30 minutes [8], [37]- [40].…”

Section: Resultsmentioning

confidence: 99%

Analysis of Change of Seismic Stress Along the Sumatran Zone to Predict Potential Earthquake Zones

Jihad¹

2023

GEOMATE

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A seismic stress change analysis is a powerful method to investigate the relationship of earthquakes, sequences, aftershocks, and potential seismic zones. In previous studies, the analysis was demonstrated by studying earthquake activity to assess seismic hazards on strike-slip, normal, and collisional thrust faults. Unfortunately, seismic stress changes in complex systems, such as subduction and intraplate earthquakes, have not been fully observed, to our knowledge. The objective of the research is to investigate seismic stress changes and their potential effects on the Sumatra subduction zone by using Colomb Stress Change Analysis (Colomb 3.3). The investigation is focused on high-accuracy major earthquake events, during the period of 2004 to 2019, and 50 major earthquakes within a period of 15 years are taken into account to investigate potential zones. Different from previous work, we included temporal and spatial analysis in order to estimate possible future significant seismic events. The results show that the 2004 Aceh-Andaman earthquake triggered the 2005 Nias earthquake as also suggested by previous study. Meanwhile, the 2008 earthquake (Mw 7.2) triggered the Padang earthquake (2009). Our new finding suggests that the 2008 earthquake also provided a positive impulse for the 2010 Mentawai earthquake. Several potential earthquake zones are found at depths of 20 to 50 km in Bengkulu, of 60 to 80 km in Mentawai. The results of this study can be a key to understanding the probability of seismic and tsunami hazards in Sumatra, which is also applicable to other potentially hazardous areas in Indonesia.

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“…The P-wave first motion method (Reasenberg and Oppenheimer 1985;Hardebeck and Shearer 2002), the P-wave and S-wave amplitude ratio method (Kisslinger et al 1981;Snoke et al 1984), and the waveform moment tensor inversion (Dreger and Helmberger 1993;Zhu and Rivera 2002) are common methods to solve for focal mechanism solution at present. Focal mechanism solutions have been applied to the source process (Yue and Lay 2013;Zhang et al 2013;Zhang et al 2016) and have become indispensable data for earthquake researchers to carry out study on regional stress fields and seismic hazard assessment (Gephart and Forsyth 1984;Gephart 1990;Arnold and Townend 2007;Martínez et al 2013;Tan et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Study on three independent parameters of focal mechanism solution

Tang

2017

Earthq Sci

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In this paper, the relationships of the plunges and azimuths of T and P axes versus the strikes, dips, and rakes of two seismic nodal planes were derived to provide reference for earthquake researchers. The independence of the plunges and azimuths of T, B, and P axes in focal mechanism solution was discussed, and it was concluded that three parameters, i.e., the azimuths of T, B and P axes, are completely independent. The focal mechanism solution representation based on Euler rotation was introduced, using three Euler angles in place of the plunges and azimuths of T, B, and P axes, and three focal mechanism solution representations were briefly compared and analyzed in respect of accuracy on the basis of the assumption of rounding; it was concluded that the Euler angle representation has better accuracy, compared with the azimuth representation and the traditional representation with T, B, and P axes.

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Source rupture process inversion of the 2013 Lushan earthquake, China

Cited by 5 publications

References 5 publications

SAR interferometry and optical remote sensing for analysis of co-seismic deformation, source characteristics and mass wasting pattern of Lushan (China, April 2013) earthquake

SAR interferometry and optical remote sensing for analysis of co-seismic deformation, source characteristics and mass wasting pattern of Lushan (China, April 2013) earthquake

Analysis of Change of Seismic Stress Along the Sumatran Zone to Predict Potential Earthquake Zones

Study on three independent parameters of focal mechanism solution

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