Application of Base-Line Correction Methods to Obtain Permanent Displacements of a Near-Source Ground Motion: The 2003 Bam Earthquake

Jafarzadeh, Fardin; Khatam, Hamed; Jahromi, Hadi Farahi

doi:10.1080/13632460802597562

Cited by 1 publication

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References 9 publications

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“…Near-fault strong ground motion records provide another method for examining this coseismic displacement Jin et al 2014;Chen and Loh 2007;Hu et al 2007;Rupakhety et al 2010;Jafarzadeh et al 2009). In addition to the disadvantage of limited observation stations, such estimates are also affected by the correction method required by strong motion records; expert judgment is needed to assess the reasonability of each estimate (Peng et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Coseismic displacement estimate of the 2013 M S7.0 Lushan, China earthquake based on the simulation of near-fault displacement field

Zhou

2016

Earthq Sci

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Usually, GPS observation provides direct evidence to estimate coseismic displacement. However, GPS stations are scattered, sparse and cannot provide a detailed distribution of coseismic displacement. Strong ground motion records share the same disadvantages as GPS in estimating coseismic displacement. Estimations from InSAR data can provide displacement distributions; however, the resolution of such methods is limited by the analysis techniques. The paper focuses on estimating the coseismic displacement of the M S 7.0 Lushan earthquake on April 20, 2013 using a simulation of the wave field based on the elastic wave equation instead of a quasi-static equation. First, the media and source models were constructed by comparing the simulated velocity and the record velocity of the ground motion. Then simulated static displacements were compared with GPS records. Their agreement validates our results. Careful analysis of the distribution of simulated coseismic displacements near the fault reveals more details of the ground motion. For example, an uplift appears on the hanging wall of the fault, rotation is associated with the horizontal displacement, the fault strike and earthquake epicenter provide the main control on motion near the faults, and the motion on the hanging wall is stronger than that on the footwall. These results reveal additional characteristics of the ground motion of the Lushan earthquake.

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Section: Introductionmentioning

confidence: 99%

Coseismic displacement estimate of the 2013 M S7.0 Lushan, China earthquake based on the simulation of near-fault displacement field

Zhou

2016

Earthq Sci

View full text Add to dashboard Cite

show abstract

Application of Base-Line Correction Methods to Obtain Permanent Displacements of a Near-Source Ground Motion: The 2003 Bam Earthquake

Cited by 1 publication

References 9 publications

Coseismic displacement estimate of the 2013 M S7.0 Lushan, China earthquake based on the simulation of near-fault displacement field

Coseismic displacement estimate of the 2013 M S7.0 Lushan, China earthquake based on the simulation of near-fault displacement field

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