Assessing the characteristics of MEMS stations for ground-motion recording: A case study of the 2023 M_s6.2 jishishan earthquake, China.

Authors

Peibin Xu, Hongwei Wang

Published in

iScience. Volume 29. Issue 7. Pages 116641. Jul 17, 2026. Epub Jul 02, 2026.

Abstract

China established the National Earthquake Intensity Rapid Reporting and Early Warning System (NEIR&EWS) in 2024. The system incorporates a force-balance accelerometer (FBA) and micro-electro-mechanical systems (MEMS) stations. This study systematically evaluated the differences in ground motion intensity measures (IMs) between MEMS and FBA stations using the 2023 Jishishan earthquake as a case study. Recording quality analysis revealed a significantly higher proportion of poor-quality recordings from MEMS stations (21.7%) compared to FBA stations (1.5%). MEMS stations showed a narrower usable period range than FBA stations. Using the normalized log-mean difference method (Val _Norm), we identified significant differences in ground motion intensity measures between station types, with Val _Norm values exceeding 1 for both horizontal and vertical components under specific conditions. This work serves as a valuable reference for future MEMS data utilization in the NEIR&EWS.

PMID:
42436990
Bibliographic data and abstract were imported from PubMed on 12 Jul 2026.

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