Natural Hazards and Earth System Sciences
Natural Hazards and Earth System Sciences
NHESS
Articles | Volume 26, issue 5
Articles | Volume 26, issue 5
https://doi.org/10.5194/nhess-26-2151-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/nhess-26-2151-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 26, issue 5
Research article
 | 
08 May 2026
Research article |  | 08 May 2026

Pre-seismic geomagnetic fusion anomaly extraction based on Spatially Weighted Non-negative Tensor Factorization

Baiyi Yang, Kaiguang Zhu, Ting Wang, Donghua Zhang, WenQi Chen, Yiqun Zhang, Pu Wang, Xingsu Li, and Yuqi Cheng

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Short summary
We propose a spatially weighted non-negative tensor factorization method for extracting pre-seismic geomagnetic anomalies from multi-station data. By integrating spatial constraints between observation stations and the seismic source into the decomposition framework, the method improves the physical interpretability of the extracted anomalies and offers a new methodological approach for seismic anomaly analysis.
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