Slip distribution of the 11 March 2011 Tohoku-Oki earthquake (Mw 9.0) inferred from the refined homomorphic deconvolution method

Liao, Boi-Yee; Sheu, Tian-Wei

doi:10.1016/j.jseaes.2013.04.024

Cited by 3 publications

(1 citation statement)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They stated that their HHD method can invert and efficiently capture the main characteristics of an earthquake rupture. By employing the same method, Liao and Sheu (2013) [11] inverted the source model of the 2011 Tohoku-Oki earthquake (Japan; M w 9.0) whose epicentral location could be estimated in advance [12] by means of natural time analysis of Japanese seismicity [13,14] to obtain the source characteristics of that event. Using the aforementioned method, Liao and Huang (2016) [15] derived the source models of two moderate earthquakes (M L 6.2 and 6.0) in 2013 in central Taiwan to calculate the Coulomb stress changes distributed around central Taiwan and predict potential earthquake locations.…”

Section: Literary Reviewsmentioning

confidence: 99%

The Source Characteristics of the Mw6.4, 2016 Meinong Taiwan Earthquake from Teleseismic Data Using the Hybrid Homomorphic Deconvolution Method

2022

Self Cite

View full text Add to dashboard Cite

The kinematic source rupture process of the 2016 Meinong earthquake (Mw = 6.4) in Taiwan was derived from apparent source time functions retrieved from teleseismic S-waves by using a refined homomorphic deconvolution method. The total duration of the rupture process was approximately 15 s, and one slip-concentrated area can be represented as the source model based on images representing static slip distribution. The rupture process began in a down-dip direction from the fault toward Tainan City, strongly suggesting that the rupture had a unilateral northwestern direction. The asperity with an area of approximately 15 × 15 km2 and the maximum slip of approximately 2 m were centered 12.8 km northwest of the hypocenter. Coseismic vertical deformation was calculated based on the source model. Compared with the results derived from InSAR (Interferometric Synthetic Aperture Radar) data, our results demonstrated that the location with maximum uplift was accurately well detected, but our maximum value was just approximately 0.4 times of the InSAR-derived value. It reveals that there are the other mechanisms to affect the vertical deformation, rather than only depending on the source model. At different depths, areas west, east, and north of the hypocenter maintained high values of Coulomb stress changes. This explains the mechanism behind aftershocks being triggered and provides a reference for predicting aftershock locations after a large earthquake. The estimated seismic spectral intensities, including spectral acceleration and velocity intensity (SIa and SIv), were derived. Source directivity effects caused damage to buildings, and we concluded that all damaged buildings were located within a SIa value of 400 gal. Destroyed buildings taller than seven floors were located in an area with a SIv value of 30 cm/s. These observations agree with those on damages caused by the 2010 Jiasian earthquake (ML 6.4) in Tainan, Taiwan.

show abstract