Multistationary Geomagnetic Vertical Intensity Polarization Anomalies for Predicting M ≥ 6 Earthquakes in Qinghai, China
Source abstract
Abstract
Single-stationed geomagnetic vertical intensity polarization (GVIP) anomalies have demonstrated good predictions of the occurrence of large earthquakes in Japan. Nonetheless, due to the lack of a previously densified geomagnetic network, how the multistationary GVIP anomaly (MGVIPA) corresponds to impending earthquakes remains poorly understood. Based on the newly constructed geomagnetic network from 2014 in Qinghai, China, which is composed of 23 electromagnetic stations, we suggested an MGVIPA method to analyze the correlation with large earthquakes since 2015. The results show that (1) the occurrence of MGVIPA is characterized by clusters in time that continue in a short period; (2) the spatial distribution of MGVIPA usually occurs with high values synchronously at several places over the same period; and (3) the Mw ≥ 6 earthquakes occurred in the regions indicated by MGVIPA within a period ranging from 3 months to 1 year from 2015 to 2021 in Qinghai, China.
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Research context
OpenAlex topics: Earthquake Detection and Analysis · Seismology and Earthquake Studies · earthquake and tectonic studies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
State Key Laboratory of Tibetan Plateau Earth System, Resources and Environment (TPESRE), Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China
Qinghai Earthquake Agency, Xining 810001, China
University of Chinese Academy of Sciences, Beijing 100049, China
Jiangsu Earthquake Agency, Nanjing 400071, China
Yunnan Earthquake Agency, Kunming 650224, China
Shandong Earthquake Agency, Jinan 250014, China
Geophysics Department, School of Earth Sciences, Yunnan University, Kunming 650500, China
Funding
the Second Tibetan Plateau Scientific Expedition and Research Program · the CAS Pioneer Hundred Talents Program
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