Interdecadal seismic periodicity modulated by solar and oceanic variability revealed from Chinese historical documents.

ABSTRACT: Understanding the interdecadal periodicity of large-scale seismic activities is critical for improving long-term earthquake forecasting, yet it remains constrained by the limited duration of instrumental records. Here we apply high-resolution spectral analysis to a millennia-long catalog of historical earthquakes in China, extending to 1831 BC. The most pronounced seismic activities occurred during the 1620-1630 s AD, a period that coincided with a major regime shift that preceded the collapse of the Chinese Ming Dynasty. High-resolution spectral analysis was performed on the historical dataset to identify robust ~ 10- and ~ 50-year periodicities in seismic frequency. The ~ 10-year periodicity exhibits a significant lagged correlation with solar (sunspot) activity, while the ~ 50-year peri

SUBMITTER: Fang K 

PROVIDER: S-EPMC12657877 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature