Abstract The observation of geomagnetic field variations is an important approach to studying earthquake precursors. Since 1987, the China Earthquake Administration has explored this seismomagnetic relationship. In particular, they studied local magnetic field anomalies over the Chinese mainland for earthquake prediction. Owing to the years of research on the seismomagnetic relationship, earthquake prediction experts have concluded that the compressive magnetic effect, tectonic magnetic effect, electric magnetic fluid effect, and other factors contribute to preearthquake magnetic anomalies. However, this involves a small magnitude of magnetic field changes. It is difficult to relate them to the abnormal changes of the extremely large magnetic field in regions with extreme earthquakes owing to the high cost of professional geomagnetic equipment, thereby limiting large-scale deployment. Moreover, it is difficult to obtain strong magnetic field changes before an earthquake. The Tianjin Earthquake Agency has developed low-cost geomagnetic field observation equipment through the Beijing–Tianjin–Hebei geomagnetic equipment test project. The new system was used to test the availability of equipment and determine the findings based on big data.
Fund: This work was supported by the Spark Program of Earthquake Science and Technology(No.XH23003C).
Corresponding Authors: Sun Lu-qiang (E-mail: lqsun850330@163.com).
E-mail: lqsun850330@163.com
About author: Sun Lu-qiang is a senior engineer at Tianjin Earthquake Agency. He graduated from Tianjin University of Technology in 2008 with a master’s degree in Computer Science and Technology. He is currently engaged in research on earthquake warning risk prevention and new technologies for earthquake monitoring. He is the winner of the title of young talents of China Earthquake Agency. He serves as the leader of the innovation team of the Tianjin Earthquake Agency.
Contact email: lqsun850330@163.com
Cite this article:
. Design and implementation of low-cost geomagnetic field monitoring equipment for high-density deployment[J]. APPLIED GEOPHYSICS, 2024, 21(3): 505-512.
2024, Vol. 21 
