Abstract：This paper uses the 2017 M6.6 Jinghe earthquake in Xinjiang as a case. By collecting continuous waveform data from geomagnetic stations in different azimuths and different distances around the epicenter, based on the Parkinson vector method and the improved method of Chen, we calculate the Parkinson vector azimuth anomalies of each station in different frequency bands. All the vector azimuth anomalies are superimposed by multiple stations in the same frequency band to extract and analyze the short-period variation anomaly characteristics of geomagnetic fields around the epicenter before the earthquake. The temporal and spatial characteristics of geomagnetic anomalies at each station are obvious, and they all show short-term and impending anomalies. The epicenter position can be better estimated through the comprehensive superposition analysis of anomalies. The research results are significant for future short-term and imminent earthquake prediction and earthquake prevention and disaster reduction.
AISA Yisimayili,MAO Zhiqiang,CHEN Jiehong. Evaluation of the 2017 M6.6 Jinghe Earthquake EpicenterBased on the Parkinson Vector[J]. jgg, 2021, 41(1): 74-78.
