The seismicity in the middle section of the Altyn Tagh Fault system revealed by a dense nodal seismic array

Yao, Shi; Xu, Tao; Sang, Yingquan; Ye, Lingling; Yang, Tingwei; Wu, Chenglong; Zhang, Minghui

doi:10.1016/j.eqrea.2024.100308

Earthquake Research Advances

2024

DOI: 10.1016/j.eqrea.2024.100308

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The seismicity in the middle section of the Altyn Tagh Fault system revealed by a dense nodal seismic array

Shi Yao,

Tao Xu,

Yingquan Sang

et al.

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2024

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2-D sedimentary structures at the southeast margin of the Tarim Basin, China, constrained by Love wave ambient noise tomography

Xie,

Yang,

et al. 2024

Geophysical Journal International

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Summary Imaging the detailed structure of sedimentary basins is crucial for natural resource exploration and essential for better analysis and correction of sediment responses when studying deeper interior earth structures using seismic data. In the Tarim Basin, previous studies on the sedimentary structures are mostly obtained by active-source seismic surveys, which can provide high-resolution underground interface information but are highly costly or environmentally unfriendly. In this paper, ambient noise tomography, an efficient and economical method based on background vibration, is employed to construct the sedimentary velocity structure at the southeast margin of the Tarim Basin. Based on ambient noise data collected from a linear dense short-period seismic array, we extract Love wave signals from T-T component cross-correlation functions (CCFs) and measure Love wave dispersion curves at a period band of ∼0.3–11.5 s. Then, we utilize a one-step direct surface wave tomography method to image a fine 2D sedimentary shear wave velocity structure with a depth reaching 10 km. Our results reveal a clear layered sedimentary structure, the paleo Tadong uplift, and the thrust Cherchen fault. Our study provides reference sedimentary velocity models for the southeastern Tarim Basin, focusing on depths shallower than 10 km. This model is intended to serve as crucial input for studies requiring detailed shallow sedimentary velocity data. Moreover, our research demonstrates that the application of the ambient noise tomography method with dense arrays has great potential for enhancing resource exploration efforts in sedimentary basins.

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2-D sedimentary structures at the southeast margin of the Tarim Basin, China, constrained by Love wave ambient noise tomography

Xie,

Yang,

et al. 2024

Geophysical Journal International

View full text Add to dashboard Cite

show abstract

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The seismicity in the middle section of the Altyn Tagh Fault system revealed by a dense nodal seismic array

Cited by 1 publication

References 51 publications

2-D sedimentary structures at the southeast margin of the Tarim Basin, China, constrained by Love wave ambient noise tomography

2-D sedimentary structures at the southeast margin of the Tarim Basin, China, constrained by Love wave ambient noise tomography

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