Medium-Short Impending Anomalies Before Baoshan MS5.2 Earthquake in Yunnan in 2023
YANG Fen
YANG Jianwen
GAO Qiong
ZHANG Huaying
LI Qing
Abstract：Before the Baoshan MS5.2 earthquake in Yunnan on May 2,2023,there were medium-short impending anomalies in seismicity and underground fluids.In terms of seismicity,there is a long seismic quiescence interval between earthquakes with MS≥5 in Yunnan,and there are medium-short impending anomalies in low-frequency activities of earthquakes with MS≥5.0 in Yunnan.There are temporal and spatial cluster activities of ML4.0 earthquakes in western Yunnan,the seismic belts of earthquakes with ML≥3.0 in Yunnan,and short-impending anomalies of precursory swarms of Mangshi ML4.0 earthquake.Underground fluid observation shows that there are synchronous short-impending anomalies in Longling water temperature,Longling water radon,and Xiaguan water radon,medium-short anomalies in Longling flow,and short-impending anomalies in Eryuan water temperature.
Keywords：Baoshan MS5.2 earthquakeSeismicityUnderground fluidsMiddle-short impending anomaly
Publication Date：2025-03-30
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：9( 68-76 )