Tracing the pace of an approaching ‘seismic dragon king’: Additional evidence for the Noto earthquake swarm and the 2024 MW 7.5 Noto earthquake

Liu, Yue; Wu, Zhongliang; Zhang, Yongxian; Yin, Xiangchu

doi:10.1016/j.eqrea.2024.100290

Earthquake Research Advances

2024

DOI: 10.1016/j.eqrea.2024.100290

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Tracing the pace of an approaching ‘seismic dragon king’: Additional evidence for the Noto earthquake swarm and the 2024 MW 7.5 Noto earthquake

Yue Liu,

Zhongliang Wu,

Yongxian Zhang

et al.

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Co-Seismic and Post-Seismic Slip Properties Associated with the 2024 M 7.5 Noto Peninsula, Japan Earthquake Determined by GNSS Observations

Xiang,

Qin,

Chen

et al. 2024

Remote Sensing

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Based on GNSS observations, the co-seismic and post-seismic slip of the 2024 Noto Peninsula earthquake and the spatio-temporal pattern of afterslip are investigated in this paper. The co-seismic slip is mainly distributed in the depth range of 2 to 15 km with the maximum value of 5.94 m. Compared with the co-seismic rupture pattern, a shallow afterslip can be observed after the earthquake, and the afterslip patch is formed northeast of the epicenter. The maximum value of afterslip during the post-seismic 180 days is 1.13 m, which is situated at the longitude of 137.53°, latitude of 37.75°, and epth of 5.43 km. The spatio-temporal evolution of afterslip indicates that the fault activity has continued throughout the post-seismic 180 days, and the coverage and magnitude of afterslip have gradually increased. As time goes on, the fault activity tends to weaken, as evidenced by a decrease in slip rate. The daily images of afterslip demonstrate that the fault activity is particularly strong in the early time period following the earthquake. The maximum value of afterslip in the first week accounts for about 18% of that in the post-seismic 180 days, and the maximum slip rate reaches 0.043 m/day. In addition, the Coulomb stress analysis indicates that afterslip and most aftershocks appear in the positive Coulomb stress region, suggesting that co-seismic Coulomb stress changes may be the driving mechanism of afterslip and aftershocks.

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Co-Seismic and Post-Seismic Slip Properties Associated with the 2024 M 7.5 Noto Peninsula, Japan Earthquake Determined by GNSS Observations

Xiang,

Qin,

Chen

et al. 2024

Remote Sensing

View full text Add to dashboard Cite

show abstract

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Tracing the pace of an approaching ‘seismic dragon king’: Additional evidence for the Noto earthquake swarm and the 2024 MW 7.5 Noto earthquake

Cited by 1 publication

References 24 publications

Co-Seismic and Post-Seismic Slip Properties Associated with the 2024 M 7.5 Noto Peninsula, Japan Earthquake Determined by GNSS Observations

Co-Seismic and Post-Seismic Slip Properties Associated with the 2024 M 7.5 Noto Peninsula, Japan Earthquake Determined by GNSS Observations

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