The quadratic Wasserstein metric for earthquake location

J Chen, Y Chen, H Wu, D Yang - Journal of Computational Physics, 2018 - Elsevier
Abstract In Engquist et al.(2016)[8], the Wasserstein metric was successfully introduced to
the full waveform inversion. We apply this method to the earthquake location problem. For …

[PDF][PDF] 青藏高原东北缘基于犠2 度量的全波形成像

董兴朋, 杨顶辉, 蒙伟娟 - 地球物理学报, 2024 - dsjyj.com.cn
摘要本研究收集青藏高原东北缘区域114 个宽频带地震台站记录到的50 个区域地震事件波形
数据, 采用基于二次Wasserstein (W2) 度量的全波形成像方法, 获得了10~ 100s …

Geometry-preserving full-waveform tomography and its application in the Longmen Shan area

X Dong, D Yang, H Zhu, Y Chen - Science China Earth Sciences, 2022 - Springer
Classic L2-norm-based waveform tomography is often plagued by insurmountable cycle
skipping problems; as a result, the iterative inversion falls into local minima, yielding …

[PDF][PDF] The Wasserstein–Fisher–Rao metric for waveform based earthquake location

D Zhou, J Chen, H Wu, D Yang, L Qiu - J. Comput. Math, 2023 - doc.global-sci.org
In this paper, we apply the Wasserstein-Fisher-Rao (WFR) metric from the unbalanced
optimal transport theory to the earthquake location problem. Compared with the quadratic …

Full-waveform tomography of the northeastern Tibetan Plateau based on the quadratic Wasserstein-metric

XP DONG, DH YANG, WJ MENG - Chinese Journal of Geophysics, 2024 - en.dzkx.org
This study collected waveform data from 50 regional seismic events recorded by 114
broadband seismic stations located at the northeastern margin of the Tibetan Plateau …

The Wasserstein-Fisher-Rao metric for waveform based earthquake location

DT Zhou, J Chen, H Wu, DH Yang, LY Qiu - arXiv preprint arXiv …, 2018 - arxiv.org
In our previous work [Chen el al., J. Comput. Phys., 373 (2018)], the quadratic Wasserstein
metric is successfully applied to the earthquake location problem. The actual earthquake …

Discussions on the processing of the multi-component seismic vector field

C Wang, Y Wang, P Sun, Y Li - Applied Sciences, 2019 - mdpi.com
Multi-component seismic data contain a great deal of vector field information that reflects the
situation of the underground medium. However, the processing methods used for multi …

The auxiliary function method for waveform based earthquake location

J Chen, H Jing, P Tong, H Wu, D Yang - Journal of Computational Physics, 2020 - Elsevier
This paper introduces the auxiliary function method, a novel, fast and simple approach for
waveform based earthquake location. From any initial hypocenter and origin time, we can …

The auxiliary function method for waveform based earthquake location

H Wu, J Chen, H Jing, P Tong, D Yang - arXiv preprint arXiv:1706.05551, 2017 - arxiv.org
This paper introduces the auxiliary function method (AFM), a novel, fast and simple
approach for waveform based earthquake location. From any initial hypocenter and origin …